STWBCTR

STWBC Digital controller for wireless battery charger (WBC) transmitters Qi 1.1.2 A11 certified, PMA compatible Datasheet - production data Memory 2 Flash and E PROM with read-while-write (RWW) and error correction code (ECC) Program memory: 32 KBytes Flash; data retention 15 years at 85 C after 10 kcycles at 25 C 2 Data memory: 1 KByte true data E PROM; data retention:15 years at 85 C after 100 kcycles at 85 C RAM: 6 KBytes VFQFPN32 Reference design features 2 layers PCBs Active object detection Features Graphical user interface for application Digital controller for wireless battery charger monitoring transmitter Evaluation boards Multiple Qi certified and PMA standard Operating temperature: -40 C up to 105 C compatible Package: VFQFPN32 Support for up to 5 W applications Mobile Applications Wearable, sports gear, medical Remote controllers Certified Qi A11 Evaluation board: STEVAL-ISB027V1 Native support to half-bridge and full bridge topologies Power rate: 5W Input: 5V 5 V supply voltage (a) Qi A13 2 firmware options Power rate: 5 W Turnkey solution for quick design Input: 5 - 16 V, 12 V APIs available for application (a) (a) customization Wearable (a) Peripherals available via APIs Power rate: 2 W ADC with 10 bit precision and 1 M input Input: 5 V impedance (a) PMA UART power rate: 5 W 2 I C master fast/slow speed rate input: 5 V GPIOs a. Contact local sale representative for further details: see www.st.com. February 2015 DocID027322 Rev 3 1/36 This is information on a product in full production. www.st.comContents STWBC Contents 1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2 Introduction to wireless battery charging systems . . . . . . . . . . . . . . . . 8 3 Certified Qi A11 solution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Firmware. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 4 Pinout and pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 4.1 Pinout for STWBC in Qi A11 configuration . . . . . . . . . . . . . . . . . . . . . . . . 10 4.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 5 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 5.1 Parameter conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 5.1.1 Minimum and maximum values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 5.1.2 Typical values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 5.1.3 Typical curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 5.1.4 Typical current consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 5.1.5 Loading capacitors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 5.1.6 Pin output voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 5.2 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 5.3 Operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 5.3.1 VOUT external capacitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 5.3.2 Internal clock sources and timing characteristics . . . . . . . . . . . . . . . . . 18 5.3.3 Memory characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 5.3.4 I/O port pin characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 5.3.5 Typical output level curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 5.3.6 Fast pad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 5.3.7 Reset pin characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 2 5.3.8 I C interface characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 5.3.9 10-bit SAR ADC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 5.4 EMC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 5.4.1 Electrostatic discharge (ESD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 5.4.2 Static latch-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 2/36 DocID027322 Rev 3