Qi A11 wireless charger transmitter evaluation board
STEVAL-ISB027V1 Qi A11 wireless charger transmitter evaluation board Data brief Description The STEVAL-ISB027V1 is a Qi 5 Watt wireless battery charger transmitter evaluation board based on the STWBC digital controller for wireless battery charger transmitters. The solution is certified in accordance with the Qi standard, A11 topology. The STEVAL-ISB027V1 provides a complete kit which includes the STWBC IC, firmware, layout and tools. The layout is based on a cost-effective 2-layer PCB. Features STWBC digital controller 5 W output power Qi 1.1.2 A11 certified Foreign object detection (FOD) Resistive and capacitive modulation Active presence detector Turn-key & FW APIs complete kit (IC, firmware, tools) RoHS compliant December 2014 Tools for the STEVAL-ISB027V1 are available on www.st.com, and allow users to access run time information such as the current power delivered or the FOD status. The STWBC firmware offers users the flexibility to modify the behavior of the LEDs or GPIOs, while adding customizable I²C and UART communication. DocID027320 Rev 1 For further information contact your local STMicroelectronics sales office 1/6 www.st.com IDEMOD 1 C22 100PF D3 6.2V 2 V- 3 -IN R51 330R 3 R25 220K BAV99W D7 OUT 4 V+ 5 R31 47K VMAIN 47PF C27 LMV931 - + U4 C18 100NF 1 +IN C24 100NF 47UF + C17 Layout note : GND reference of the Op Amp inputs have to be connectedni star ground connection with the GND plan of the power bridge. 1M R48 TP13 WIRE_SOLDER 1 1 2 33NF 100NF C33 C25 VDD_STWBC 270NH R24 R52 22K TP4 1 C26 1NF TP10 RESET CURRENT_DEMOD R49 100K VDD_STWBC R27 10K D4 RED R40 1.8K LEDR TP3 J3 1 1 4 5 DNBR TP7 C19 1UF SWIM UPBR UPBL DNBL C20 100NF R30 100K STWBC UART_TX UART_RX GPIO_0 GPIO_1 TP6 100K R41 DRIVEOUT[0] DRIVEOUT[1] DRIVEOUT[2] DRIVEOUT[3] PWM_AUX/GPIO_2 SWIM NRST VOUT U3 D5 GREEN R39 1.8K 32 1 6 7 21 24 25 5 2 27 28 31 STWBC Digital Controller VDD_STWBC 1 5V RESET VDD_STWBC SWIM 33 30 +5 V D C 1 DocID027320 Rev 1 1 29 VDD VSS VSS 13 DIGIN[0] DIGIN[1] SWIM_CONN 1 2 3 4 J4 TANK_VOLTAGE VBRIDGE SPARE_ADC NTC_TEMP ISENSE VMAIN CPP_INT_3 CPP_INT_2 CPP_REF CPP_INT_1 CPP_INT_0 DIGIN[2] I2C_SDA/DIGIN[4] I2C_SCL/DIGIN[5] R34 1K VDDA VSSA 14 2/6 I2C_SDA I2C_SCL LEDR 15 16 17 18 19 20 8 9 10 11 12 26 3 4 22 23 R47 100K USER I2C_SCL VMAIN SWIM_CONN 1 2 3 4 J5 ISENSE COIL_TEMP R36 100K TANK_VOLTAGE R35 100K SYMBOL_DETECT1 SYMBOL_DETECT2 VMAIN CURRENT_DEMOD R46 100K R29 10K TP2 1 R38 50K R26 180K Layout Note: Please Place NTC Very very close to the Main Coil 5V C21 100NF 1 NTC TP14 WIRE_SOLDER Schematic diagram STEVAL-ISB027V1 Schematic diagram Figure 1: STEVAL-ISB027V1 circuit schematic (1 of 3) GSPG1812140915SG I2C_SDA STEVAL-ISB027V1 Schematic diagram Figure 2: STEVAL-ISB027V1 circuit schematic (2 of 3) DocID027320 Rev 1 3/6 Schematic diagram STEVAL-ISB027V1 Figure 3: STEVAL-ISB027V1 circuit schematic (3 of 3) POWER_NODE R1 1K R60 C30 470R 1NF 3 BRIDGE_L 1 2 D6 BAV99W C1 C2 10NF 10NF R2 1M R3 150K R4 0R C4 TANK_VOLTAGE R5 33K C3 470PF 6.8NF C5 R61 R62 1M 1M 6.8NF R10 R11 33K 33K C31 C32 100PF 100PF VDD_STWBC TP9 1 SYMBOL_DETECT2 1 TP8 R13 100K R12 100K 1 2 3 SYMBOL_DETECT1 6 5 4 Q5 BC847CDW1T1G R14 2.2K GSPG1812140925SG 4/6 DocID027320 Rev 1 STEVAL-ISB027V1 2 Revision history Revision history Table 1: Document revision history Date Rev 18-Dec-2014 1 DocID027320 Rev 1 Changes First release. 5/6 STEVAL-ISB027V1 IMPORTANT NOTICE – PLEASE READ CAREFULLY STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and improvements to ST products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on ST products before placing orders. ST products are sold pursuant to ST’s terms and conditions of sale in place at the time of order acknowledgement. Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or the design of Purchasers’ products. No license, express or implied, to any intellectual property right is granted by ST herein. Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product. ST and the ST logo are trademarks of ST. All other product or service names are the property of their respective owners. Information in this document supersedes and replaces information previously supplied in any prior versions of this document. © 2014 STMicroelectronics – All rights reserved 6/6 DocID027320 Rev 1
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