STWBC-WA中文资料Digital controller for wireless battery charger transmitters for wearable and smart watches applications数据手册ST规格书

描述 Description

The STWBC-WA is STMicroelectronics’ wireless battery charger transmitter application optimized for wearable usage.
Thanks to its 5 V native supply, the STWBC-WA device is ideal to operate with USB power supplies.
Wireless battery charging systems replace the traditional power supply cable by means of electromagnetic induction between a transmitting pad or dongle (TX) and a battery-powered unit (RX), such as a smartwatch or sports gear.
The power transmitter unit is responsible for controlling the transmitting coil and generating the correct amount of power requested by the receiver unit. The receiver unit continuously provides the transmitter the correct power level requested, by modulating the transmitter carrier through controlled resistive or capacitive insertion. Generating the correct amount of power guarantees the highest level of end-to-end efficiency due to reduced energy waste. It also helps to maintain a lower operational temperature.
The digital wireless battery transmitter can adapt to the amount of energy transferred by the coil by modulating the frequency, duty cycles or coil input voltage.

特性 Features

• Digital controller for wireless battery charger transmitters
• Optimized for
• Cost effective half-bridge topology with integrated drivers
• Optional full-bridge configuration for 3 W applications
• VIN range: 3 V to 5.5 V
• Supports USB VIN
• Active presence detector
• Parametric customization via graphical interface
• 2 firmware options:
• Turnkey solution for quick design
• APIs available for application customization
• Peripherals available via APIs
• ADC, with 10-bit precision
• UART
• I2C master fast/slow speed rate
• GPIOs
• Memory
• Flash and EEPROM 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
• Data memory: 1 Kbyte true data EEPROM; data retention: 15 years at 85 °C after 100 kcycles at 85 °C
• RAM: 6 Kbytes
• Transmitter reference design:
• Evaluation board order code: STEVAL-ISB038V1T
• 2-layer PCBs
• Active object detection
• Graphical user interface for application monitoring
• Interoperable with receiver: STEVAL-ISB038V1R
• Operating temperature
• -40 °C up to 105 °C
• Package
• VFQFPN32

简介

STWBC-WA属于集成电路（IC）的电源管理-专用。由制造生产的STWBC-WA电源管理 - 专用专用型电源管理集成电路 (PMIC) 用于电源的控制或操作，适合特定或小范围的目标应用，例如汽车气囊管理、电容器组平衡、AC 公共电力监控、存储器总线端接、接地故障检测、能量收集、小型引擎管理、处理器或芯片集专用电压调节、负载突降保护、触觉驱动器、热电制冷器控制等。