STWBC-EP Digital controller for wireless battery chargers transmitters for Qi 15 W applications Datasheet - production data Memory Flash and EEPROM with read-while-write (RWW) and Error Correction Code (ECC) Program memory: 32-Kbyte Flash data retention: 20 years at 55 C after 1000 cycles at 55 C Data memory: 1 Kbyte true data EEPROM data retention: 20 years at 55 C after 1000 cycles at 85 C RAM: 6 Kbytes Features Transmitter reference design: Digital controller for wireless battery charger WPC Qi 1.2.3 certified transmitter MP-A10 single coil 15 W topology 15 W single coil inductive transmitters Evaluation board order code: STEVAL- optimized for: ISB044V1 Cell phones and smartphones 2-layer PCBs Tablets and phablets Active object detection Charging accessories Graphical User Interface for application monitoring Support for Wireless Power Consortium (WPC) 1.2 EPP 15 W certified applications Operating temperature: -40 C up to 105 C Backward compatible with 5 W WPC 1.1 Package: VFQFPN32 - 5 x 5mm applications Support for half bridge topology with DC/DC Table 1. Device summary VIN range: 3 V to 5.5 V Order code Type Supports USB Vin STWBC-EP VFQFPN32 , tube Active presence detector STWBC-EPTR VFQFPN32 tape and reel Foreign object detection Q-factor measurement Parametric customization via GUI Turnkey firmware solution Peripherals 10-bit ADC UART interface 2 I C master fast/slow speed rate GPIOs October 2017 DocID030747 Rev 1 1/32 This is information on a product in full production. www.st.comContents STWBC-EP Contents 1 Description . 6 2 STWBC-EP system architecture . 7 Firmware . 7 3 Reference design . 8 4 STWBC-EP pinout and pin description 9 5 Pins functional description 11 5.1 Power supplies: VDD, VDDA, VSS, VSSA, VOUT 11 5.2 DC/DC converter: DCDC DRV, DCDC DAC, CMP OUT V, CS CMP, DCDC DAC REF, DEMAGNET, VTARGET 11 5.3 Half bridge driver: UPBL, DNBL, PWM QFOD, WAVE SNS . 12 5.4 Wireless power functions: TANK VOLTAGE, ISENSE, COIL TEMP, SYMBOL DETECT, CURRENT DEMOD, CS CMP AVG . 12 5.5 Input power supply management: VMAIN, QC IO 13 5.6 External digital interface: UART TX, UART RX . 13 5.7 End user signaling: LED 13 5.8 Expansion interface: I2C SDA, I2C SCL 13 5.9 Debug: SWIM, NRST 13 6 Electrical characteristics 14 6.1 Parameter conditions 14 6.2 Minimum and maximum values 14 6.3 Typical values 14 6.4 Typical curves 14 6.5 Typical current consumption . 14 6.6 Loading capacitors 15 6.7 Pin output voltage . 15 6.8 Absolute maximum ratings 16 6.9 Operating conditions 17 6.9.1 VOUT external capacitor 18 2/32 DocID030747 Rev 1