1. technology and computing
2. electronic components

EPC reserves the right at any time, without notice, to change said circuitry and specifications.
Demonstration Board Notification
The EPC9107 board is intended for product evaluation purposes only and is not intended for commercial use. As an evaluation tool, it is not
designed for compliance with the European Union directive on electromagnetic compatibility or any other such directives or regulations. As
board builds are at times subject to product availability, it is possible that boards may contain components or assembly materials that are not
RoHS compliant. Efficient Power Conversion Corporation (EPC) makes no guarantee that the purchased board is 100% RoHS compliant. No
Licenses are implied or granted under any patent right or other intellectual property whatsoever. EPC assumes no liability for applications
assistance, customer product design, software performance, or infringement of patents or any other intellectual property rights of any kind.
EPC Products are distributed exclusively through Digi-Key.
www.digikey.com
* Maximum limited by inductor saturation
1000
kHz
Peak Efficiency
12 VIN, 10 A IOUT
96.1
%
Peak Efficiency
28 VIN, 12 A IOUT
93.5
%
Full Load Efficiency
12 VIN, 15 A IOUT
95.6
%
Full Load Efficiency
28 VIN, 15 A IOUT
93.3
%
VIN
Bus Input Voltage Range
VOUT
Switch Node Output Voltage
IOUT
Switch Node Output Current
fSW
Switching frequency
SYMBOL PARAMETER
15*
3.3
9
CONDITIONS
MIN
TYP
A
V
MAX
UNITS
28
V
Table 1: Performance Summary (TA = 25 °C)
The EPC9107 board contains the complete power stage (including eGaN FETs, driver, inductor and input/output caps) in a compact ½” x ½” layout to showcase the performance that can be
achieved using the eGaN FETs and eGaN driver together.
Quick Start Procedure
VIN
9 V - 28 V
EXT VCC
EXT VCC
Demonstration board EPC9107 is easy to set up to evaluate the performance of the EPC2015 eGaN FETs and LM5113 driver. Refer to Figure 2
for proper connect and measurement setup and follow the procedure below:
Peter Cheng
FAE Support, Asia
Mobile: +886.938.009.706
[email protected]
There are also various probe points to facilitate simple waveform
measurement and efficiency calculation. A complete block diagram of the circuit is given in Figure 1. For more information on
the EPC2015 eGaN FETs or LM5113 driver, please refer to the datasheet available from EPC at www.epc-co.com and www.TI.com.
These datasheets, as well that of the LT3833 controller should be
read in conjunction with this quick start guide.
The EPC9107 demonstration board is 3” square and contains a
fully closed loop buck converter with optimized control loop.
Charge
Pump
Do not use probe ground lead
Do not let
probe tip
touch the
low-side die!
5V
LTC3833
Controller
1. With power off, connect the input power supply bus between VIN and GND banana jacks as shown.
Stephen Tsang
Sales, Asia
Mobile: +852.9408.8351
[email protected]
28 V Buck Converter featuring EPC2015
The EPC9107 demonstration board is a 3.3 V output, 1 MHz
buck converter with an 15 A maximum output current and 9 V
to 28 V input voltage range. The demonstration board features
the EPC2015 enhancement mode (eGaN®) field effect transistor
(FET), as well as the Texas Instruments LM5113 gate driver.
Dead-Time
Setting
2. With power off, connect the active (constant current) load as desired between VOUT and GND banana jacks as shown.
Bhasy Nair
Global FAE Support
Office: +1.972.805.8585
Mobile: +1.469.879.2424
[email protected]
Demonstration Board EPC9107
Quick Start Guide
www.epc-co.com
GND
LM5113
Gate
Driver
VOUT
3.3 V / 15 A
Minimize loop
Place probe
tip on pad
GND
1/2” square power module
3. Turn on the supply voltage to the required value (more than 9V, but do not exceed the absolute maximum voltage of 28 V on VIN).
4. Measure the output voltage to make sure the board is fully functional and operating no-load.
Renee Yawger
WW Marketing
Office: +1.908.475.5702
Mobile: +1.908.619.9678
[email protected]
www.epc-co.com
Contact us:
DESCRIPTION
Figure 3: Proper Measurement of Switch Node or Gate Voltage
Figure 1: Block Diagram of EPC9107 Demonstration Board
5. Turn on active load to the desired load current while staying below the maximum current (15 A)
6. Once operational, adjust the bus voltage and load current within the allowed operating range and observe the output switching behavior,
efficiency and other parameters.
7. For shutdown, please follow steps in reverse.
IIN
NOTE. When measuring the high frequency content switch node of gate voltage, care must be taken to avoid long ground leads. Measure these by placing the oscilloscope probe
tip on the top pad of D3 and grounding the probe directly across D3 on the bottom pad provided for switch node and using the right hand pad of R24 and the GND pad below
it for gate voltage. See Figure 3 for proper scope probe technique. Measuring the switch node with a high bandwidth ( ≥ 500MHz) probe and high bandwidth scope ( ≥ 1GHz) is
recommended.
NOTE. The dead-times for both the leading and trailing edges have been set for optimum full load efficiency. Adjustment is not recommended, but can be done at own risk by
replacing R21 and R22 with potentiometers P1 and P2. This should be done while monitoring both the input current and switch-node voltage to determine the effect of these
adjustments. Under no circumstance should the input pins to the LM5113 be probed during operation as the added probe capacitance will change the device timing.
IOUT
A
A
+
VIN
Supply ≤28 V
–
+
–
+
V
–
V
Active
≤15 V Load
CIRCUIT PERFORMANCE
The EPC9107 demonstration circuit was designed to showcase the size and performance that can readily be achieved at 1 MHz operation
using eGaN FETs for supply voltages up to 28V or more. Since a closed loop controller is included on board, the associated losses must also
be lumped into any efficiency measurement that is performed. In an effort to mitigate these losses and focus on the efficiency of the power
stage, the controller is powered from the output through an unregulated charge pump supplied from the output. Thus the controller and
gate drive losses are still included, but the associated conversion loss from the input supply is improved.
Figure 4: Typical waveforms for 28 V to 3.3 V / 15 A (1 MHz) CH1: Switch node voltage
Figure 2: Proper Connection and Measurement Setup
EPC reserves the right at any time, without notice, to change said circuitry and specifications.
Demonstration Board Notification
The EPC9107 board is intended for product evaluation purposes only and is not intended for commercial use. As an evaluation tool, it is not
designed for compliance with the European Union directive on electromagnetic compatibility or any other such directives or regulations. As
board builds are at times subject to product availability, it is possible that boards may contain components or assembly materials that are not
RoHS compliant. Efficient Power Conversion Corporation (EPC) makes no guarantee that the purchased board is 100% RoHS compliant. No
Licenses are implied or granted under any patent right or other intellectual property whatsoever. EPC assumes no liability for applications
assistance, customer product design, software performance, or infringement of patents or any other intellectual property rights of any kind.
EPC Products are distributed exclusively through Digi-Key.
www.digikey.com
* Maximum limited by inductor saturation
1000
kHz
Peak Efficiency
12 VIN, 10 A IOUT
96.1
%
Peak Efficiency
28 VIN, 12 A IOUT
93.5
%
Full Load Efficiency
12 VIN, 15 A IOUT
95.6
%
Full Load Efficiency
28 VIN, 15 A IOUT
93.3
%
VIN
Bus Input Voltage Range
VOUT
Switch Node Output Voltage
IOUT
Switch Node Output Current
fSW
Switching frequency
SYMBOL PARAMETER
15*
3.3
9
CONDITIONS
MIN
TYP
A
V
MAX
UNITS
28
V
Table 1: Performance Summary (TA = 25 °C)
The EPC9107 board contains the complete power stage (including eGaN FETs, driver, inductor and input/output caps) in a compact ½” x ½” layout to showcase the performance that can be
achieved using the eGaN FETs and eGaN driver together.
Quick Start Procedure
VIN
9 V - 28 V
EXT VCC
EXT VCC
Demonstration board EPC9107 is easy to set up to evaluate the performance of the EPC2015 eGaN FETs and LM5113 driver. Refer to Figure 2
for proper connect and measurement setup and follow the procedure below:
Peter Cheng
FAE Support, Asia
Mobile: +886.938.009.706
[email protected]
There are also various probe points to facilitate simple waveform
measurement and efficiency calculation. A complete block diagram of the circuit is given in Figure 1. For more information on
the EPC2015 eGaN FETs or LM5113 driver, please refer to the datasheet available from EPC at www.epc-co.com and www.TI.com.
These datasheets, as well that of the LT3833 controller should be
read in conjunction with this quick start guide.
The EPC9107 demonstration board is 3” square and contains a
fully closed loop buck converter with optimized control loop.
Charge
Pump
Do not use probe ground lead
Do not let
probe tip
touch the
low-side die!
5V
LTC3833
Controller
1. With power off, connect the input power supply bus between VIN and GND banana jacks as shown.
Stephen Tsang
Sales, Asia
Mobile: +852.9408.8351
[email protected]
28 V Buck Converter featuring EPC2015
The EPC9107 demonstration board is a 3.3 V output, 1 MHz
buck converter with an 15 A maximum output current and 9 V
to 28 V input voltage range. The demonstration board features
the EPC2015 enhancement mode (eGaN®) field effect transistor
(FET), as well as the Texas Instruments LM5113 gate driver.
Dead-Time
Setting
2. With power off, connect the active (constant current) load as desired between VOUT and GND banana jacks as shown.
Bhasy Nair
Global FAE Support
Office: +1.972.805.8585
Mobile: +1.469.879.2424
[email protected]
Demonstration Board EPC9107
Quick Start Guide
www.epc-co.com
GND
LM5113
Gate
Driver
VOUT
3.3 V / 15 A
Minimize loop
Place probe
tip on pad
GND
1/2” square power module
3. Turn on the supply voltage to the required value (more than 9V, but do not exceed the absolute maximum voltage of 28 V on VIN).
4. Measure the output voltage to make sure the board is fully functional and operating no-load.
Renee Yawger
WW Marketing
Office: +1.908.475.5702
Mobile: +1.908.619.9678
[email protected]
www.epc-co.com
Contact us:
DESCRIPTION
Figure 3: Proper Measurement of Switch Node or Gate Voltage
Figure 1: Block Diagram of EPC9107 Demonstration Board
5. Turn on active load to the desired load current while staying below the maximum current (15 A)
6. Once operational, adjust the bus voltage and load current within the allowed operating range and observe the output switching behavior,
efficiency and other parameters.
7. For shutdown, please follow steps in reverse.
IIN
NOTE. When measuring the high frequency content switch node of gate voltage, care must be taken to avoid long ground leads. Measure these by placing the oscilloscope probe
tip on the top pad of D3 and grounding the probe directly across D3 on the bottom pad provided for switch node and using the right hand pad of R24 and the GND pad below
it for gate voltage. See Figure 3 for proper scope probe technique. Measuring the switch node with a high bandwidth ( ≥ 500MHz) probe and high bandwidth scope ( ≥ 1GHz) is
recommended.
NOTE. The dead-times for both the leading and trailing edges have been set for optimum full load efficiency. Adjustment is not recommended, but can be done at own risk by
replacing R21 and R22 with potentiometers P1 and P2. This should be done while monitoring both the input current and switch-node voltage to determine the effect of these
adjustments. Under no circumstance should the input pins to the LM5113 be probed during operation as the added probe capacitance will change the device timing.
IOUT
A
A
+
VIN
Supply ≤28 V
–
+
–
+
V
–
V
Active
≤15 V Load
CIRCUIT PERFORMANCE
The EPC9107 demonstration circuit was designed to showcase the size and performance that can readily be achieved at 1 MHz operation
using eGaN FETs for supply voltages up to 28V or more. Since a closed loop controller is included on board, the associated losses must also
be lumped into any efficiency measurement that is performed. In an effort to mitigate these losses and focus on the efficiency of the power
stage, the controller is powered from the output through an unregulated charge pump supplied from the output. Thus the controller and
gate drive losses are still included, but the associated conversion loss from the input supply is improved.
Figure 4: Typical waveforms for 28 V to 3.3 V / 15 A (1 MHz) CH1: Switch node voltage
Figure 2: Proper Connection and Measurement Setup
EPC reserves the right at any time, without notice, to change said circuitry and specifications.
* Maximum limited by inductor saturation
Demonstration Board Notification
The EPC9107 board is intended for product evaluation purposes only and is not intended for commercial use. As an evaluation tool, it is not
designed for compliance with the European Union directive on electromagnetic compatibility or any other such directives or regulations. As
board builds are at times subject to product availability, it is possible that boards may contain components or assembly materials that are not
RoHS compliant. Efficient Power Conversion Corporation (EPC) makes no guarantee that the purchased board is 100% RoHS compliant. No
Licenses are implied or granted under any patent right or other intellectual property whatsoever. EPC assumes no liability for applications
assistance, customer product design, software performance, or infringement of patents or any other intellectual property rights of any kind.
93.3
28 VIN, 15 A IOUT
Full Load Efficiency
95.6
12 VIN, 15 A IOUT
Full Load Efficiency
93.5
28 VIN, 12 A IOUT
Peak Efficiency
Peak Efficiency
EPC Products are distributed exclusively through Digi-Key.
www.digikey.com
Switching frequency
fSW
Switch Node Output Current
IOUT
Switch Node Output Voltage
OUT
V
IN
V
IN
OUT
12 V , 10 A I
%
%
96.1
%
1000
kHz
15*
3.3
Bus Input Voltage Range
SYMBOL PARAMETER
%
9
CONDITIONS
MIN
V
28
TYP
A
MAX
V
UNITS
Table 1: Performance Summary (TA = 25 °C)
The EPC9107 demonstration board is a 3.3 V output, 1 MHz
buck converter with an 15 A maximum output current and 9 V
to 28 V input voltage range. The demonstration board features
the EPC2015 enhancement mode (eGaN®) field effect transistor
(FET), as well as the Texas Instruments LM5113 gate driver.
28 V Buck Converter featuring EPC2015
Demonstration Board EPC9107
Quick Start Guide
DESCRIPTION
Dead-Time
Setting
GND
Do not use probe ground lead
Do not let
probe tip
touch the
low-side die!
LM5113
Gate
Driver
VOUT
3.3 V / 15 A
Minimize loop
Place probe
tip on pad
GND
1/2” square power module
www.epc-co.com
3. Turn on the supply voltage to the required value (more than 9V, but do not exceed the absolute maximum voltage of 28 V on VIN).
4. Measure the output voltage to make sure the board is fully functional and operating no-load.
Contact us:
The EPC9107 demonstration board is 3” square and contains a
fully closed loop buck converter with optimized control loop.
2. With power off, connect the active (constant current) load as desired between VOUT and GND banana jacks as shown.
Charge
Pump
5V
LTC3833
Controller
1. With power off, connect the input power supply bus between VIN and GND banana jacks as shown.
www.epc-co.com
Demonstration board EPC9107 is easy to set up to evaluate the performance of the EPC2015 eGaN FETs and LM5113 driver. Refer to Figure 2
for proper connect and measurement setup and follow the procedure below:
Bhasy Nair
Global FAE Support
Office: +1.972.805.8585
Mobile: +1.469.879.2424
[email protected]
There are also various probe points to facilitate simple waveform
measurement and efficiency calculation. A complete block diagram of the circuit is given in Figure 1. For more information on
the EPC2015 eGaN FETs or LM5113 driver, please refer to the datasheet available from EPC at www.epc-co.com and www.TI.com.
These datasheets, as well that of the LT3833 controller should be
read in conjunction with this quick start guide.
EXT VCC
Renee Yawger
WW Marketing
Office: +1.908.475.5702
Mobile: +1.908.619.9678
[email protected]
The EPC9107 board contains the complete power stage (including eGaN FETs, driver, inductor and input/output caps) in a compact ½” x ½” layout to showcase the performance that can be
achieved using the eGaN FETs and eGaN driver together.
EXT VCC
Peter Cheng
FAE Support, Asia
Mobile: +886.938.009.706
[email protected]
VIN
9 V - 28 V
Stephen Tsang
Sales, Asia
Mobile: +852.9408.8351
[email protected]
Quick Start Procedure
Figure 3: Proper Measurement of Switch Node or Gate Voltage
Figure 1: Block Diagram of EPC9107 Demonstration Board
5. Turn on active load to the desired load current while staying below the maximum current (15 A)
6. Once operational, adjust the bus voltage and load current within the allowed operating range and observe the output switching behavior,
efficiency and other parameters.
7. For shutdown, please follow steps in reverse.
NOTE. When measuring the high frequency content switch node of gate voltage, care must be taken to avoid long ground leads. Measure these by placing the oscilloscope probe
tip on the top pad of D3 and grounding the probe directly across D3 on the bottom pad provided for switch node and using the right hand pad of R24 and the GND pad below
it for gate voltage. See Figure 3 for proper scope probe technique. Measuring the switch node with a high bandwidth ( ≥ 500MHz) probe and high bandwidth scope ( ≥ 1GHz) is
recommended.
NOTE. The dead-times for both the leading and trailing edges have been set for optimum full load efficiency. Adjustment is not recommended, but can be done at own risk by
replacing R21 and R22 with potentiometers P1 and P2. This should be done while monitoring both the input current and switch-node voltage to determine the effect of these
adjustments. Under no circumstance should the input pins to the LM5113 be probed during operation as the added probe capacitance will change the device timing.
IIN
IOUT
A
A
+
VIN
Supply ≤28 V
–
+
–
V
+
–
V
Active
≤15 V Load
CIRCUIT PERFORMANCE
The EPC9107 demonstration circuit was designed to showcase the size and performance that can readily be achieved at 1 MHz operation
using eGaN FETs for supply voltages up to 28V or more. Since a closed loop controller is included on board, the associated losses must also
be lumped into any efficiency measurement that is performed. In an effort to mitigate these losses and focus on the efficiency of the power
stage, the controller is powered from the output through an unregulated charge pump supplied from the output. Thus the controller and
gate drive losses are still included, but the associated conversion loss from the input supply is improved.
Figure 2: Proper Connection and Measurement Setup
Figure 4: Typical waveforms for 28 V to 3.3 V / 15 A (1 MHz) CH1: Switch node voltage
EPC reserves the right at any time, without notice, to change said circuitry and specifications.
* Maximum limited by inductor saturation
Demonstration Board Notification
The EPC9107 board is intended for product evaluation purposes only and is not intended for commercial use. As an evaluation tool, it is not
designed for compliance with the European Union directive on electromagnetic compatibility or any other such directives or regulations. As
board builds are at times subject to product availability, it is possible that boards may contain components or assembly materials that are not
RoHS compliant. Efficient Power Conversion Corporation (EPC) makes no guarantee that the purchased board is 100% RoHS compliant. No
Licenses are implied or granted under any patent right or other intellectual property whatsoever. EPC assumes no liability for applications
assistance, customer product design, software performance, or infringement of patents or any other intellectual property rights of any kind.
93.3
28 VIN, 15 A IOUT
Full Load Efficiency
95.6
12 VIN, 15 A IOUT
Full Load Efficiency
93.5
28 VIN, 12 A IOUT
Peak Efficiency
Peak Efficiency
EPC Products are distributed exclusively through Digi-Key.
www.digikey.com
Switching frequency
fSW
Switch Node Output Current
IOUT
Switch Node Output Voltage
OUT
V
IN
V
IN
OUT
12 V , 10 A I
%
%
96.1
%
1000
kHz
15*
3.3
Bus Input Voltage Range
SYMBOL PARAMETER
%
9
CONDITIONS
MIN
V
28
TYP
A
MAX
V
UNITS
Table 1: Performance Summary (TA = 25 °C)
The EPC9107 demonstration board is a 3.3 V output, 1 MHz
buck converter with an 15 A maximum output current and 9 V
to 28 V input voltage range. The demonstration board features
the EPC2015 enhancement mode (eGaN®) field effect transistor
(FET), as well as the Texas Instruments LM5113 gate driver.
28 V Buck Converter featuring EPC2015
Demonstration Board EPC9107
Quick Start Guide
DESCRIPTION
Dead-Time
Setting
GND
Do not use probe ground lead
Do not let
probe tip
touch the
low-side die!
LM5113
Gate
Driver
VOUT
3.3 V / 15 A
Minimize loop
Place probe
tip on pad
GND
1/2” square power module
www.epc-co.com
3. Turn on the supply voltage to the required value (more than 9V, but do not exceed the absolute maximum voltage of 28 V on VIN).
4. Measure the output voltage to make sure the board is fully functional and operating no-load.
Contact us:
The EPC9107 demonstration board is 3” square and contains a
fully closed loop buck converter with optimized control loop.
2. With power off, connect the active (constant current) load as desired between VOUT and GND banana jacks as shown.
Charge
Pump
5V
LTC3833
Controller
1. With power off, connect the input power supply bus between VIN and GND banana jacks as shown.
www.epc-co.com
Demonstration board EPC9107 is easy to set up to evaluate the performance of the EPC2015 eGaN FETs and LM5113 driver. Refer to Figure 2
for proper connect and measurement setup and follow the procedure below:
Bhasy Nair
Global FAE Support
Office: +1.972.805.8585
Mobile: +1.469.879.2424
[email protected]
There are also various probe points to facilitate simple waveform
measurement and efficiency calculation. A complete block diagram of the circuit is given in Figure 1. For more information on
the EPC2015 eGaN FETs or LM5113 driver, please refer to the datasheet available from EPC at www.epc-co.com and www.TI.com.
These datasheets, as well that of the LT3833 controller should be
read in conjunction with this quick start guide.
EXT VCC
Renee Yawger
WW Marketing
Office: +1.908.475.5702
Mobile: +1.908.619.9678
[email protected]
The EPC9107 board contains the complete power stage (including eGaN FETs, driver, inductor and input/output caps) in a compact ½” x ½” layout to showcase the performance that can be
achieved using the eGaN FETs and eGaN driver together.
EXT VCC
Peter Cheng
FAE Support, Asia
Mobile: +886.938.009.706
[email protected]
VIN
9 V - 28 V
Stephen Tsang
Sales, Asia
Mobile: +852.9408.8351
[email protected]
Quick Start Procedure
Figure 3: Proper Measurement of Switch Node or Gate Voltage
Figure 1: Block Diagram of EPC9107 Demonstration Board
5. Turn on active load to the desired load current while staying below the maximum current (15 A)
6. Once operational, adjust the bus voltage and load current within the allowed operating range and observe the output switching behavior,
efficiency and other parameters.
7. For shutdown, please follow steps in reverse.
NOTE. When measuring the high frequency content switch node of gate voltage, care must be taken to avoid long ground leads. Measure these by placing the oscilloscope probe
tip on the top pad of D3 and grounding the probe directly across D3 on the bottom pad provided for switch node and using the right hand pad of R24 and the GND pad below
it for gate voltage. See Figure 3 for proper scope probe technique. Measuring the switch node with a high bandwidth ( ≥ 500MHz) probe and high bandwidth scope ( ≥ 1GHz) is
recommended.
NOTE. The dead-times for both the leading and trailing edges have been set for optimum full load efficiency. Adjustment is not recommended, but can be done at own risk by
replacing R21 and R22 with potentiometers P1 and P2. This should be done while monitoring both the input current and switch-node voltage to determine the effect of these
adjustments. Under no circumstance should the input pins to the LM5113 be probed during operation as the added probe capacitance will change the device timing.
IIN
IOUT
A
A
+
VIN
Supply ≤28 V
–
+
–
V
+
–
V
Active
≤15 V Load
CIRCUIT PERFORMANCE
The EPC9107 demonstration circuit was designed to showcase the size and performance that can readily be achieved at 1 MHz operation
using eGaN FETs for supply voltages up to 28V or more. Since a closed loop controller is included on board, the associated losses must also
be lumped into any efficiency measurement that is performed. In an effort to mitigate these losses and focus on the efficiency of the power
stage, the controller is powered from the output through an unregulated charge pump supplied from the output. Thus the controller and
gate drive losses are still included, but the associated conversion loss from the input supply is improved.
Figure 2: Proper Connection and Measurement Setup
Figure 4: Typical waveforms for 28 V to 3.3 V / 15 A (1 MHz) CH1: Switch node voltage
96%
5
6
7
8
9 10
Output Current (Io)
11
12
13
14
15
16
6
C24
VOUT
J4
J3
0
1
2
3
4
5
6
7
8
9 10
Output Current (Io)
11
12
13
14
15
VOUT
SJ4
GND
10uF, 35V
C10
VIN
SJ3
C13 C14
C20 C21
47uF, 10V
J2
16
Keystone 5015
0
TP4
4
S+
3
Keystone 5015
2
D3
Optional
L1
R15 3.3k
5
R16
18k
SJ5
0.1uF, 25V
C19
Zero
LM5113TM
C16
100pF
C17
R22 47
SDM03U40
P2 Optional
3
D2
GND
B
NC7SZ00L6X
Y
VCC
U3
C7
2
D
C
Rev. 1.0
1
Demonstration Board –
EPC9107 Schematic
4.7uF, 10V C5
EXT
MODE
RUN
39.2k
Opt
Zero
R8
R7
VCC
R2 18k
22pF
C3
0.1uF, 25V
C2
150pF
C1
R5
6
RT
Vrng
5
ITH
Trk/ss
4
3
0.1uF, 25V
R9 2.2
VIN
IntVCC
PGND
11
12
13
BG
SW
14
15
TRK/SS
R4 10.0k
47pF
C12
R3
45.0k
VOUT
Remote Sensing
B
EXT
1
Keystone 5015
A
VDD
4.7uF, 10V
C8
C15
Boost
TG
Vosns+
Vosns1
VOUT
2
R10 10.0k
C4
0.1uF, 25V
0.1uF, 25V
VCC
S+
PGOOD
C18
Optional
100k
1k R14
VCC
TP9
1k R13
Keystone 5015
1
SYNC
TP5
Keystone 5015
MODE
TRK/SS
TRACK
1
TP8
R21 7.5
16
LM2766M6
Optional
S-
1
TP6
RUN
Keystone 5015 C6
R12
560k
R11
VIN
RUN
PGOOD
1
Keystone 5015
D1
P1 Optional
U1
LTC3833
SDM03U40
1uF, 10V
4
2
SD
GND
C1-
C30
6
C1+
OUT
V+
U4
1
3
R31 33
C31
5
SDM03U40
D4
R30 Zero
1uF, 10V
21
2
100pF
4
R24
R20
Zero
R23
Q2
EPC2015
Zero
Zero
U2
EXT
19
20
PGOOD
Run
3
VOUT
Vout
TP7
7
Sns-
ExtVCC
17
18
A
8
Sns+
1
9
Manufacturer / Part #
Murata, GRM1885C1H151JA01D
Murata, GRM1885C1H220JA01D
TDK, C1608C0G1H470J
TDK, C1005X5R1E104K
TDK, C1608X5R1A475K
Taiyo Yuden, GMK325BJ106KN
TDK, C2012X6S1V475K125AB
TDK, C2012X5R1A476M
Kemet, C0402C101K5GACTU
Kemet, C1206C107M9PACTU
TDK, C1005X5R1A105K050BB
Diodes Inc., SDM03U40-7
Keystone, 575-4
Cooper Bussman, HCF1305-1R0-R
EPC, EPC2015
Stackpole, RMCF0603FT45K3
Panasonic, ERJ-2RKF1002X
Stackpole, RMCF0402ZT0R00
Stackpole, RMCF0402FT39R0
Stackpole, RMCF0603FT39K2
Stackpole, RMCF0603FT18K0
Yageo, RC0402FR-072R2L
Stackpole, RMCF0603FT560K
Stackpole, RMCF0603FT100K
Rohm, MCR03EZPJ102
Stackpole, RMCF0603JT3K30
Stackpole, RMCF0603JT7R50
Stackpole, RMCF0603JT47R0
Keystone Elect, 5015
Linear Technology, LTC3833EUDC#PBF
Texas Instruments, LM5113
Fairchild, NC7SZ00L6X
Texas Instruments, LM2766M6
Keystone, 8834
Mode/PLL
P1, P2
R7, R16
C6, C18
SJ5
D3
SJ1, SJ2, SJ3, SJ4
Part Description
Capacitor, 150pF, 5%, 50V, NP0
Capacitor, 22pF, 5%, 50V, NP0
Capacitor, 47pF, 5%, 50V, NP0
Capacitor, 0.1uF, 10%, 25V, X5R
Capacitor, 4.7uF, 10%, 10V, X5R
Capacitor, 10uF, 20%, 35V, X5R
Capacitor, 4.7uF, 10%, 35V, X7R
Capacitor, 47uF, 20%, 10V, X5R
Capacitor, 100pF, 5%, 50V, NP0
Capacitor, 100uF, 20%, 6.3V, X5R
Capacitor, 1uF, 20%, 10V, X5R
Schottky Diode, 30V
Banana Jack
Inductor, 1.0uH, 22A
eGaN® FET
Resistor, 45.0k, 1%, 1/8W
Resistor, 10.0k, 1%, 1/10W
Resistor, 0 Ohm, 1/16W
Resistor, 39 Ohm, 1%, 1/16W
Resistor, 39.2k, 1%, 1/8W
Resistor, 18.0k, 1%, 1/8W
Resistor, 2.2 Ohm, 5%, 1/16W
Resistor, 560K, 1%, 1/8W
Resistor, 100k, 1%, 1/8W
Resistor, 1.00k, 5%, 1/10W
Resistor, 3.3k, 5%, 1/8W
Resistor, 7.5 Ohm, 5%, 1/16W
Resistor, 47 Ohm, 5%, 1/16W
Measurement Point
I.C., Buck Regulator
I.C., Gate Driver
I.C., Logic
I.C., Charge Pump
Nylon Stand-offs
Optional Potentiometer, 500 Ohm, 0.25W
Optional Resistors
Optional Capacitors
Optional Scope Jack
Optional Diode
Optional SMA connectors
PGood
Reference
C1
C3
C12
C2, C4, C7, C9, C15, C19
C5, C8
C10
C11, C22, C23
C13, C14, C20, C21
C16, C17
C24
C30, C31
D1, D2, D4
J1, J2, J3, J4
L1
Q1, Q2
R3
R4, R10
R5, R19, R20, R23, R24, R30
R31
R8
R2
R9
R11
R12
R13, R14
R15
R21
R22
TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP8, TP9
U1
U2
U3
U4
Vin
1
1
1
6
2
1
2
4
2
1
2
2
4
1
2
1
2
6
1
1
1
1
1
1
2
1
1
1
9
1
1
1
1
4
0
0
0
0
0
0
10
Qty
2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
R19
0.1uF, 25V
C9
4
Figure 6: Thermal image of EPC9107 under full load condition: 28 VIN, 15 AOUT
with convection cooling
2
NOTE. The EPC9107 demonstration board does not have any thermal protection on board.
Q1
EPC2015
The EPC9107 demonstration board thermal image for steady state full
load operation is shown in Figure 6. The EPC9107 is intended for bench
evaluation with low ambient temperature and convection cooling. The
addition of heat-sinking and forced air cooling could increase the current capability of the demonstration circuit, but care must be taken to
not exceed the absolute maximum die temperature of 125°C and stay
within the constraints of the other components within the circuit, most
notably the saturation of the output inductor.
Item
TP2
VIN
THERMAL CONSIDERATIONS
Table 2 : Bill of Material
HCF1305-1R0
Keystone 5015
C11
C22 C23
4.7uF, 35V
5
1
TP1
1
Figure 5: Typical efficiency and power loss curves for 12V, 19V, 24V and 28V input
Keystone 5015
S-
1
TP3
0
0.5
SJ2
88%
12 VIN
19 VIN
24 VIN
28 VIN
1
SJ1
89%
1.5
J1
Efficiency (%)
Power Loss (W)
12 VIN
19 VIN
24 VIN
28 VIN
90%
1
91%
2
1
92%
6
2.5
93%
3.3V / 15A
3
94%
100uF, 6.3V
3.5
95%
87%
D
A
B
4
C
97%
96%
5
6
7
8
9 10
Output Current (Io)
11
12
13
14
15
16
6
C24
VOUT
J4
J3
0
1
2
3
4
5
6
7
8
9 10
Output Current (Io)
11
12
13
14
15
VOUT
SJ4
GND
10uF, 35V
C10
VIN
SJ3
C13 C14
C20 C21
47uF, 10V
J2
16
Keystone 5015
0
TP4
4
S+
3
Keystone 5015
2
D3
Optional
L1
R15 3.3k
5
R16
18k
SJ5
0.1uF, 25V
C19
Zero
LM5113TM
C16
100pF
C17
R22 47
SDM03U40
P2 Optional
3
D2
GND
B
NC7SZ00L6X
Y
VCC
U3
C7
2
D
C
Rev. 1.0
1
Demonstration Board –
EPC9107 Schematic
4.7uF, 10V C5
EXT
MODE
RUN
39.2k
Opt
Zero
R8
R7
VCC
R2 18k
22pF
C3
0.1uF, 25V
C2
150pF
C1
R5
6
RT
Vrng
5
ITH
Trk/ss
4
3
0.1uF, 25V
R9 2.2
VIN
IntVCC
PGND
11
12
13
BG
SW
14
15
TRK/SS
R4 10.0k
47pF
C12
R3
45.0k
VOUT
Remote Sensing
B
EXT
1
Keystone 5015
A
VDD
4.7uF, 10V
C8
C15
Boost
TG
Vosns+
Vosns1
VOUT
2
R10 10.0k
C4
0.1uF, 25V
0.1uF, 25V
VCC
S+
PGOOD
C18
Optional
100k
1k R14
VCC
TP9
1k R13
Keystone 5015
1
SYNC
TP5
Keystone 5015
MODE
TRK/SS
TRACK
1
TP8
R21 7.5
16
LM2766M6
Optional
S-
1
TP6
RUN
Keystone 5015 C6
R12
560k
R11
VIN
RUN
PGOOD
1
Keystone 5015
D1
P1 Optional
U1
LTC3833
SDM03U40
1uF, 10V
4
2
SD
GND
C1-
C30
6
C1+
OUT
V+
U4
1
3
R31 33
C31
5
SDM03U40
D4
R30 Zero
1uF, 10V
21
2
100pF
4
R24
R20
Zero
R23
Q2
EPC2015
Zero
Zero
U2
EXT
19
20
PGOOD
Run
3
VOUT
Vout
TP7
7
Sns-
ExtVCC
17
18
A
8
Sns+
1
9
Manufacturer / Part #
Murata, GRM1885C1H151JA01D
Murata, GRM1885C1H220JA01D
TDK, C1608C0G1H470J
TDK, C1005X5R1E104K
TDK, C1608X5R1A475K
Taiyo Yuden, GMK325BJ106KN
TDK, C2012X6S1V475K125AB
TDK, C2012X5R1A476M
Kemet, C0402C101K5GACTU
Kemet, C1206C107M9PACTU
TDK, C1005X5R1A105K050BB
Diodes Inc., SDM03U40-7
Keystone, 575-4
Cooper Bussman, HCF1305-1R0-R
EPC, EPC2015
Stackpole, RMCF0603FT45K3
Panasonic, ERJ-2RKF1002X
Stackpole, RMCF0402ZT0R00
Stackpole, RMCF0402FT39R0
Stackpole, RMCF0603FT39K2
Stackpole, RMCF0603FT18K0
Yageo, RC0402FR-072R2L
Stackpole, RMCF0603FT560K
Stackpole, RMCF0603FT100K
Rohm, MCR03EZPJ102
Stackpole, RMCF0603JT3K30
Stackpole, RMCF0603JT7R50
Stackpole, RMCF0603JT47R0
Keystone Elect, 5015
Linear Technology, LTC3833EUDC#PBF
Texas Instruments, LM5113
Fairchild, NC7SZ00L6X
Texas Instruments, LM2766M6
Keystone, 8834
Mode/PLL
P1, P2
R7, R16
C6, C18
SJ5
D3
SJ1, SJ2, SJ3, SJ4
Part Description
Capacitor, 150pF, 5%, 50V, NP0
Capacitor, 22pF, 5%, 50V, NP0
Capacitor, 47pF, 5%, 50V, NP0
Capacitor, 0.1uF, 10%, 25V, X5R
Capacitor, 4.7uF, 10%, 10V, X5R
Capacitor, 10uF, 20%, 35V, X5R
Capacitor, 4.7uF, 10%, 35V, X7R
Capacitor, 47uF, 20%, 10V, X5R
Capacitor, 100pF, 5%, 50V, NP0
Capacitor, 100uF, 20%, 6.3V, X5R
Capacitor, 1uF, 20%, 10V, X5R
Schottky Diode, 30V
Banana Jack
Inductor, 1.0uH, 22A
eGaN® FET
Resistor, 45.0k, 1%, 1/8W
Resistor, 10.0k, 1%, 1/10W
Resistor, 0 Ohm, 1/16W
Resistor, 39 Ohm, 1%, 1/16W
Resistor, 39.2k, 1%, 1/8W
Resistor, 18.0k, 1%, 1/8W
Resistor, 2.2 Ohm, 5%, 1/16W
Resistor, 560K, 1%, 1/8W
Resistor, 100k, 1%, 1/8W
Resistor, 1.00k, 5%, 1/10W
Resistor, 3.3k, 5%, 1/8W
Resistor, 7.5 Ohm, 5%, 1/16W
Resistor, 47 Ohm, 5%, 1/16W
Measurement Point
I.C., Buck Regulator
I.C., Gate Driver
I.C., Logic
I.C., Charge Pump
Nylon Stand-offs
Optional Potentiometer, 500 Ohm, 0.25W
Optional Resistors
Optional Capacitors
Optional Scope Jack
Optional Diode
Optional SMA connectors
PGood
Reference
C1
C3
C12
C2, C4, C7, C9, C15, C19
C5, C8
C10
C11, C22, C23
C13, C14, C20, C21
C16, C17
C24
C30, C31
D1, D2, D4
J1, J2, J3, J4
L1
Q1, Q2
R3
R4, R10
R5, R19, R20, R23, R24, R30
R31
R8
R2
R9
R11
R12
R13, R14
R15
R21
R22
TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP8, TP9
U1
U2
U3
U4
Vin
1
1
1
6
2
1
2
4
2
1
2
2
4
1
2
1
2
6
1
1
1
1
1
1
2
1
1
1
9
1
1
1
1
4
0
0
0
0
0
0
10
Qty
2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
R19
0.1uF, 25V
C9
4
Figure 6: Thermal image of EPC9107 under full load condition: 28 VIN, 15 AOUT
with convection cooling
2
NOTE. The EPC9107 demonstration board does not have any thermal protection on board.
Q1
EPC2015
The EPC9107 demonstration board thermal image for steady state full
load operation is shown in Figure 6. The EPC9107 is intended for bench
evaluation with low ambient temperature and convection cooling. The
addition of heat-sinking and forced air cooling could increase the current capability of the demonstration circuit, but care must be taken to
not exceed the absolute maximum die temperature of 125°C and stay
within the constraints of the other components within the circuit, most
notably the saturation of the output inductor.
Item
TP2
VIN
THERMAL CONSIDERATIONS
Table 2 : Bill of Material
HCF1305-1R0
Keystone 5015
C11
C22 C23
4.7uF, 35V
5
1
TP1
1
Figure 5: Typical efficiency and power loss curves for 12V, 19V, 24V and 28V input
Keystone 5015
S-
1
TP3
0
0.5
SJ2
88%
12 VIN
19 VIN
24 VIN
28 VIN
1
SJ1
89%
1.5
J1
Efficiency (%)
Power Loss (W)
12 VIN
19 VIN
24 VIN
28 VIN
90%
1
91%
2
1
92%
6
2.5
93%
3.3V / 15A
3
94%
100uF, 6.3V
3.5
95%
87%
D
A
B
4
C
97%
14
12 VIN
19 VIN
24 VIN
28 VIN
15
16
1
13
1
12
1
11
GND
1
7
8
9 10
Output Current (Io)
2
6
2
5
17
4
PGood
3
Vin
2
10
1
19
4
3.5
3
2.5
2
1.5
1
0.5
0
0
18
16
Sns-
12 VIN
19 VIN
24 VIN
28 VIN
15
Sns+
14
Mode/PLL
13
9
12
20
11
Vout
7
8
9 10
Output Current (Io)
ExtVCC
6
8
5
21
4
Run
3
7
97%
96%
95%
2
Rev. 1.0
94%
93%
92%
91%
90%
89%
88%
87%
1
J4
Keystone 5015
TP4
6
5
4
3
0
C16
4.7uF, 10V C5
Figure 6: Thermal image of EPC9107 under full load condition: 28 VIN, 15 AOUT
with convection cooling
Manufacturer / Part #
NC7SZ00L6X
SJ4
SJ3
SJ5
D3
Optional
100pF
Y
Figure 5: Typical efficiency and power loss curves for 12V, 19V, 24V and 28V input
Part Description
39.2k
R15 3.3k
Zero
THERMAL CONSIDERATIONS
Reference
Opt
2
1
Zero
GND
100pF
EXT
100uF, 6.3V
R8
0.1uF, 25V
VCC
0.1uF, 25V
C19
LM5113TM
C17
B
C7
MODE
R7
RUN
C24
S+
C13 C14
C20 C21
47uF, 10V
R5
R9 2.2
D2
VCC
U3
R22 47
A
VIN
SDM03U40
R24
IntVCC
VDD
R20
R16
Opt
Q2
EPC2015
Zero
RT
11
6
PGND
The EPC9107 demonstration board thermal image for steady state full
load operation is shown in Figure 6. The EPC9107 is intended for bench
evaluation with low ambient temperature and convection cooling. The
addition of heat-sinking and forced air cooling could increase the current capability of the demonstration circuit, but care must be taken to
not exceed the absolute maximum die temperature of 125°C and stay
within the constraints of the other components within the circuit, most
notably the saturation of the output inductor.
Qty
Murata, GRM1885C1H151JA01D
Murata, GRM1885C1H220JA01D
TDK, C1608C0G1H470J
TDK, C1005X5R1E104K
TDK, C1608X5R1A475K
Taiyo Yuden, GMK325BJ106KN
TDK, C2012X6S1V475K125AB
TDK, C2012X5R1A476M
Kemet, C0402C101K5GACTU
Kemet, C1206C107M9PACTU
TDK, C1005X5R1A105K050BB
Diodes Inc., SDM03U40-7
Keystone, 575-4
Cooper Bussman, HCF1305-1R0-R
EPC, EPC2015
Stackpole, RMCF0603FT45K3
Panasonic, ERJ-2RKF1002X
Stackpole, RMCF0402ZT0R00
Stackpole, RMCF0402FT39R0
Stackpole, RMCF0603FT39K2
Stackpole, RMCF0603FT18K0
Yageo, RC0402FR-072R2L
Stackpole, RMCF0603FT560K
Stackpole, RMCF0603FT100K
Rohm, MCR03EZPJ102
Stackpole, RMCF0603JT3K30
Stackpole, RMCF0603JT7R50
Stackpole, RMCF0603JT47R0
Keystone Elect, 5015
Linear Technology, LTC3833EUDC#PBF
Texas Instruments, LM5113
Fairchild, NC7SZ00L6X
Texas Instruments, LM2766M6
Keystone, 8834
A
A
C
3.3V / 15A
L1
P2 Optional
Vrng
12
5
22pF
C3
C
R2 18k
BG
VIN
J1
VOUT
J3
Zero
SW
ITH
C2
C10
SJ2
SJ1
VOUT
Keystone 5015
S-
R23
R21 7.5
Trk/ss
150pF
0.1uF, 25V
4
13
Zero
J2
TG
14
4.7uF, 10V
Boost
Vosns+
TRK/SS
Vosns-
HCF1305-1R0
TP3
Keystone 5015
SDM03U40
C8
0.1uF, 25V
D1
C15
R19
TP2
Q1
EPC2015
0.1uF, 25V
C9
U2
16
1
R4 10.0k
2
15
10uF, 35V
P1 Optional
U1
LTC3833
47pF
Keystone 5015
VIN
VCC
R10 10.0k
C11
C22 C23
4.7uF, 35V
C12
R3
45.0k
C18
Optional
C4
0.1uF, 25V
Remote Sensing
TP1
PGOOD
VOUT
B
S-
B
Power Loss (W)
Capacitor, 150pF, 5%, 50V, NP0
Capacitor, 22pF, 5%, 50V, NP0
Capacitor, 47pF, 5%, 50V, NP0
Capacitor, 0.1uF, 10%, 25V, X5R
Capacitor, 4.7uF, 10%, 10V, X5R
Capacitor, 10uF, 20%, 35V, X5R
Capacitor, 4.7uF, 10%, 35V, X7R
Capacitor, 47uF, 20%, 10V, X5R
Capacitor, 100pF, 5%, 50V, NP0
Capacitor, 100uF, 20%, 6.3V, X5R
Capacitor, 1uF, 20%, 10V, X5R
Schottky Diode, 30V
Banana Jack
Inductor, 1.0uH, 22A
eGaN® FET
Resistor, 45.0k, 1%, 1/8W
Resistor, 10.0k, 1%, 1/10W
Resistor, 0 Ohm, 1/16W
Resistor, 39 Ohm, 1%, 1/16W
Resistor, 39.2k, 1%, 1/8W
Resistor, 18.0k, 1%, 1/8W
Resistor, 2.2 Ohm, 5%, 1/16W
Resistor, 560K, 1%, 1/8W
Resistor, 100k, 1%, 1/8W
Resistor, 1.00k, 5%, 1/10W
Resistor, 3.3k, 5%, 1/8W
Resistor, 7.5 Ohm, 5%, 1/16W
Resistor, 47 Ohm, 5%, 1/16W
Measurement Point
I.C., Buck Regulator
I.C., Gate Driver
I.C., Logic
I.C., Charge Pump
Nylon Stand-offs
Optional Potentiometer, 500 Ohm, 0.25W
Optional Resistors
Optional Capacitors
Optional Scope Jack
Optional Diode
Optional SMA connectors
EXT
1
S+
Keystone 5015
D
Demonstration Board –
EPC9107 Schematic
D
C1
C3
C12
C2, C4, C7, C9, C15, C19
C5, C8
C10
C11, C22, C23
C13, C14, C20, C21
C16, C17
C24
C30, C31
D1, D2, D4
J1, J2, J3, J4
L1
Q1, Q2
R3
R4, R10
R5, R19, R20, R23, R24, R30
R31
R8
R2
R9
R11
R12
R13, R14
R15
R21
R22
TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP8, TP9
U1
U2
U3
U4
P1, P2
R7, R16
C6, C18
SJ5
D3
SJ1, SJ2, SJ3, SJ4
VCC
3
C1
Optional
NOTE. The EPC9107 demonstration board does not have any thermal protection on board.
Item
1
1
1
6
2
1
2
4
2
1
2
2
4
1
2
1
2
6
1
1
1
1
1
1
2
1
1
1
9
1
1
1
1
4
0
0
0
0
0
0
1k R13
Keystone 5015
100k
1k R14
TP9
LM2766M6
R12
Keystone 5015 C6
1uF, 10V
GND
4
SD
C1-
2
C1+
6
C30
TP6
560k
RUN
TP5
3
1uF, 10V
1
MODE
1
C31
OUT
V+
Keystone 5015
SYNC
EXT
R31 33
5
U4
1
R30 Zero
Table 2 : Bill of Material
1
2
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Keystone 5015
VOUT
R11
TRK/SS
1
TRACK
TP8
SDM03U40
D4
VIN
RUN
PGOOD
1
PGOOD
TP7
6
5
4
3
2
1
Efficiency (%)
VOUT
EPC reserves the right at any time, without notice, to change said circuitry and specifications.
Demonstration Board Notification
The EPC9107 board is intended for product evaluation purposes only and is not intended for commercial use. As an evaluation tool, it is not
designed for compliance with the European Union directive on electromagnetic compatibility or any other such directives or regulations. As
board builds are at times subject to product availability, it is possible that boards may contain components or assembly materials that are not
RoHS compliant. Efficient Power Conversion Corporation (EPC) makes no guarantee that the purchased board is 100% RoHS compliant. No
Licenses are implied or granted under any patent right or other intellectual property whatsoever. EPC assumes no liability for applications
assistance, customer product design, software performance, or infringement of patents or any other intellectual property rights of any kind.
EPC Products are distributed exclusively through Digi-Key.
www.digikey.com
* Maximum limited by inductor saturation
1000
kHz
Peak Efficiency
12 VIN, 10 A IOUT
96.1
%
Peak Efficiency
28 VIN, 12 A IOUT
93.5
%
Full Load Efficiency
12 VIN, 15 A IOUT
95.6
%
Full Load Efficiency
28 VIN, 15 A IOUT
93.3
%
VIN
Bus Input Voltage Range
VOUT
Switch Node Output Voltage
IOUT
Switch Node Output Current
fSW
Switching frequency
SYMBOL PARAMETER
15*
3.3
9
CONDITIONS
MIN
TYP
A
V
MAX
UNITS
28
V
Table 1: Performance Summary (TA = 25 °C)
The EPC9107 board contains the complete power stage (including eGaN FETs, driver, inductor and input/output caps) in a compact ½” x ½” layout to showcase the performance that can be
achieved using the eGaN FETs and eGaN driver together.
Quick Start Procedure
VIN
9 V - 28 V
EXT VCC
EXT VCC
Demonstration board EPC9107 is easy to set up to evaluate the performance of the EPC2015 eGaN FETs and LM5113 driver. Refer to Figure 2
for proper connect and measurement setup and follow the procedure below:
Peter Cheng
FAE Support, Asia
Mobile: +886.938.009.706
[email protected]
There are also various probe points to facilitate simple waveform
measurement and efficiency calculation. A complete block diagram of the circuit is given in Figure 1. For more information on
the EPC2015 eGaN FETs or LM5113 driver, please refer to the datasheet available from EPC at www.epc-co.com and www.TI.com.
These datasheets, as well that of the LT3833 controller should be
read in conjunction with this quick start guide.
The EPC9107 demonstration board is 3” square and contains a
fully closed loop buck converter with optimized control loop.
Charge
Pump
Do not use probe ground lead
Do not let
probe tip
touch the
low-side die!
5V
LTC3833
Controller
1. With power off, connect the input power supply bus between VIN and GND banana jacks as shown.
Stephen Tsang
Sales, Asia
Mobile: +852.9408.8351
[email protected]
28 V Buck Converter featuring EPC2015
The EPC9107 demonstration board is a 3.3 V output, 1 MHz
buck converter with an 15 A maximum output current and 9 V
to 28 V input voltage range. The demonstration board features
the EPC2015 enhancement mode (eGaN®) field effect transistor
(FET), as well as the Texas Instruments LM5113 gate driver.
Dead-Time
Setting
2. With power off, connect the active (constant current) load as desired between VOUT and GND banana jacks as shown.
Bhasy Nair
Global FAE Support
Office: +1.972.805.8585
Mobile: +1.469.879.2424
[email protected]
Demonstration Board EPC9107
Quick Start Guide
www.epc-co.com
GND
LM5113
Gate
Driver
VOUT
3.3 V / 15 A
Minimize loop
Place probe
tip on pad
GND
1/2” square power module
3. Turn on the supply voltage to the required value (more than 9V, but do not exceed the absolute maximum voltage of 28 V on VIN).
4. Measure the output voltage to make sure the board is fully functional and operating no-load.
Renee Yawger
WW Marketing
Office: +1.908.475.5702
Mobile: +1.908.619.9678
[email protected]
www.epc-co.com
Contact us:
DESCRIPTION
Figure 3: Proper Measurement of Switch Node or Gate Voltage
Figure 1: Block Diagram of EPC9107 Demonstration Board
5. Turn on active load to the desired load current while staying below the maximum current (15 A)
6. Once operational, adjust the bus voltage and load current within the allowed operating range and observe the output switching behavior,
efficiency and other parameters.
7. For shutdown, please follow steps in reverse.
IIN
NOTE. When measuring the high frequency content switch node of gate voltage, care must be taken to avoid long ground leads. Measure these by placing the oscilloscope probe
tip on the top pad of D3 and grounding the probe directly across D3 on the bottom pad provided for switch node and using the right hand pad of R24 and the GND pad below
it for gate voltage. See Figure 3 for proper scope probe technique. Measuring the switch node with a high bandwidth ( ≥ 500MHz) probe and high bandwidth scope ( ≥ 1GHz) is
recommended.
NOTE. The dead-times for both the leading and trailing edges have been set for optimum full load efficiency. Adjustment is not recommended, but can be done at own risk by
replacing R21 and R22 with potentiometers P1 and P2. This should be done while monitoring both the input current and switch-node voltage to determine the effect of these
adjustments. Under no circumstance should the input pins to the LM5113 be probed during operation as the added probe capacitance will change the device timing.
IOUT
A
A
+
VIN
Supply ≤28 V
–
+
–
+
V
–
V
Active
≤15 V Load
CIRCUIT PERFORMANCE
The EPC9107 demonstration circuit was designed to showcase the size and performance that can readily be achieved at 1 MHz operation
using eGaN FETs for supply voltages up to 28V or more. Since a closed loop controller is included on board, the associated losses must also
be lumped into any efficiency measurement that is performed. In an effort to mitigate these losses and focus on the efficiency of the power
stage, the controller is powered from the output through an unregulated charge pump supplied from the output. Thus the controller and
gate drive losses are still included, but the associated conversion loss from the input supply is improved.
Figure 4: Typical waveforms for 28 V to 3.3 V / 15 A (1 MHz) CH1: Switch node voltage
Figure 2: Proper Connection and Measurement Setup