STWBC-MC Digital controller for wireless battery chargers transmitters for Qi multicoil applications Datasheet - production data Memory Flash and EEPROM with read-while-write (RWW) and Error Correction Code (ECC) Program memory: 32 Kbytes 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 Multi-coil EPP topology transmitter 2-layer PCBs Multi-coil inductive transmitters optimized for: Active object detection Cell phones and smartphones Graphical user interface for application Tablets and phablets monitoring Charging accessories Operating temperature: -40 C up to 105 C Support for Wireless Power Consortium (WPC) Package: VFQFPN32 5 x 5 mm 1.2 EPP applications Backward compatible with WPC BPP and Table 1. Ordering information 1.1 5W applications Type Package Support for half-bridge topology with DC/DC STWBC-MC VFQFPN32, tube V range: 3 V to 5.5 V IN STWBC-MCTR VFQFPN32 tape and reel Supports USB V IN Active presence detector 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 July 2019 DS12373 Rev 3 1/32 This is information on a product in full production. www.st.comContents STWBC-MC Contents 1 Description . 6 2 STWBC-MC system architecture . 7 Firmware . 7 3 STWBC-MC pinout and pin description . 8 4 Pins functional description 10 4.1 Power supplies: VDD, VDDA, VSS, VSSA, VOUT 10 4.2 DC/DC converter: DCDC DRV, DCDC DAC, CMP OUT V, CS CMP, DCDC DAC REF, DEMAGNET, VTARGET 10 4.3 Half-bridge driver: UPBL, DNBL, PWM QFOD, WAVE SNS . 10 4.4 Wireless power functions: TANK VOLTAGE, ISENSE, COIL TEMP, SYMBOL DETECT, CURRENT DEMOD, QFOD ADC 11 4.5 Input power supply management: VMAIN, STROBE SR .11 4.6 External digital interface: UART TX, UART RX . 12 4.7 General purpose output: GPO 7 . 12 4.8 Coil selection, LEDs and Quick Charge IO: I2C SDA, I2C SCL, STROBE SR 12 4.9 Debug: SWIM, NRST 12 5 Electrical characteristics 13 5.1 Parameter conditions 13 5.2 Minimum and maximum values 13 5.3 Typical values 13 5.4 Typical curves 13 5.5 Typical current consumption . 13 5.6 Loading capacitors 14 5.7 Pin output voltage . 15 5.8 Absolute maximum ratings 15 5.9 Operating conditions 17 5.9.1 VOUT external capacitor 18 5.9.2 Memory characteristics . 19 2/32 DS12373 Rev 3