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The STWBC is the digital controller for wireless battery charger (WBC) transmitters (TX) from STMicroelectronics, offering the most flexible and efficient solution for controlling power transfer to a receiver (RX) in WBC-enabled applications such as phones, wearables, and other battery powered devices that use electromagnetic induction for recharging.
As a member of the Qi Wireless Power Consortium and the PMA (Power Matters Alliance), ST ensures full compatibility with these leading wireless charging protocols and holds certification for the Qi 1.1.2 A11 standard.
The STWBC performs all the functions for transmitter control: thanks to the internal 96 MHz clock and supporting both half-bridge and full bridge topologies, it is able to precisely control the amount of transmitted power to match the requirements of the receiving unit in terms of maximizing the efficiency of the power transfer.
The STWBC comes with firmware options to offer customers the ability to personalize their end product without the need of external microcontrollers:
A turnkey Qi 1.1.2 A11 certified solution, fully interoperable with Qi enabled mobile phones.
API (application programming interface) access to customize the underlying firmware, for example modifying the behavior of the LEDs or GPIOs in response to the receiver behavior and supporting I²C and UART communication within a network.
The STWBC Qi 1.1.2 A11 certified solution is available in the STMicroelectronics STEVAL-ISB027V1 reference design, intended for all Qi compatible receivers such as in Qi enabled mobile phones.
In the reference design the STWBC integrates the foreign object detection (FOD): the digital feedback between TX and RX units allows the detection of metal objects close to the receiver that could result in potential hazards, enabling the STWBC to stop power transmission when such objects are detected.
The reference design is offered together with a complete ecosystem to support customers in building their applications, including the Qi 1.1.2 A11 certified board (STEVAL-ISB027V1), API libraries and documentation to develop software customizations, as well as a comprehensive graphical user interface to monitor real-time performance and diagnostics.主要特性
- Digital controller for wireless battery charger transmitter
- Multiple Qi certified and PMA standard compatible
- Support for up to 5 W applications
- Mobile
- Wearable, sports gear, medical
- Remote controllers
- Native support to half-bridge and full bridge topologies
- 5 V supply voltage
- 2 firmware options
- Turnkey solution for quick design
- APIs available for application customization1
- Peripherals available via APIs
- ADC with 10 bit precision and 1 MΩ input impedance
- UART
- I2C master fast/slow speed rate
- GPIOs
- Memory
- Flash and E2PROM 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 E2PROM; data retention:15 years at 85 °C after 100 kcycles at 85 °C
- RAM: 6 KBytes
- Reference design features
- 2 layers PCBs
- Active object detection
- Graphical user interface for application monitoring
- Evaluation boards
- Operating temperature: -40 °C up to 105 °C
- Package: VFQFPN32
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产品规格 (1)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 25 Sep 2020 |
25 Sep 2020
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工具/软件相关的应用笔记 (1)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 13 Sep 2018 |
13 Sep 2018
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宣传册 (1)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 21 Jun 2018 |
21 Jun 2018
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手册 (2)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 29 Jul 2020 |
29 Jul 2020
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| 26 Feb 2020 |
26 Feb 2020
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CAD/EDA Symbols, Footprints and Models
质量与可靠性
| 产品型号 | Marketing Status | 封装 | 等级规格 | 符合RoHS级别 | 材料声明** |
|---|---|---|---|---|---|
| STWBC |
批量生产
|
VFQFPN 32 5x5x1.0 | 工业 | Ecopack2 | |
| STWBCTR |
批量生产
|
VFQFPN 32 5x5x1.0 | 工业 | Ecopack2 |
(**) st.com上提供的材料声明表单可能是基于包装系列中最常用的封装的通用文档。因此，它们可能不是100%适用于特定的设备。有关特定设备的信息，请联系 销售支持 。
样片和购买
| 产品型号 | 从分销商订购 | 从ST订购 | 供货状态 | ECCN (US) | ECCN (EU) | 包装类型 | 封装 | 温度（ºC） | 等级规格 | Country of Origin | Output Power (W) (typ) | Budgetary Price (US$)*/Qty | 更多信息 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 最小值 | 最大值 | ||||||||||||||
| STWBC | 1 distributors | 样片和购买 立即购买 |
批量生产
|
3A991A2 | NEC | Tray | VFQFPN 32 5x5x1.0 | -40 | 105 | Industrial | CHINA | 5 | 2.6875 / 1k | ||
| STWBCTR | 1 distributors |
批量生产
|
3A991A2 | NEC | Tape And Reel | VFQFPN 32 5x5x1.0 | -40 | 105 | Industrial | CHINA | 5 | 2.6875 / 1k | |||
供货状态
批量生产ECCN (US)
3A991A2Budgetary Price (US$)*/Qty
2.6875 / 1k