原标题：ST STWBC-WA和STWLC04 1W可穿戴无线电源系统解决方案

　　ST公司的STEVAL-ISB038V1是1W可穿戴无线电源系统,包括无线电源发送器STEVAL-ISB038V1T和无线电源接收器STEVAL-ISB038V1R.接收器采用11mm线圈,发送器采用20mm线圈,USB 5V输入,在接收器边提供1W功率.这种超紧凑无线电池充电系统主要用在可穿戴设备,智能手表,物联网(IoT)传感器和保健设备.本文介绍了无线电源系统STEVAL-ISB038V1主要特性,发送器STEVAL-ISB038V1T和接收器STEVAL-ISB038V1R主要特性,电路图和材料清单以及接收板PCB装配图.

　　Wireless charger transmitter evaluation board based on STWBC-WA for wearable applications The STEVAL-ISB038V1 is a wireless battery charger reference design evaluation kit designed for ultra-compact battery operated devices, such as wearable gear, smartwatches, Internet of Things sensors and healthcare devices.

　　The design is optimized for 1-watt wireless power transfer with a half-bridge topology on the transmitter side and with tiny 11 mm and 20 mm coils on the receiver and transmitter sides, respectively. For power transfers up to 3 watts, the design can be modified by using larger coils and a full-bridge configuration on the transmitter.

　　The STWBC-WA transmitter can support a cost-effective half-bridge topology (full-bridge optional) and a powerful software API lets you modify the behavior of LED and general purpose IOs as well as connecting external peripherals or devices like sensors to the design via the on-chip I²C and UART ports.

　　The STWLC04 is designed for 1-watt power transfer based on the Qi protocol, with digital control and precise analog control loops ensuring stable operation. The I²C interface allows a high degree of customization and settings can be stored in the embedded non-volatile memory.

　　STEVAL-ISB038V1主要特性:

　　• Wearable KIT characteristics:

　　− 11 mm coil on Receiver

　　− 20 mm coil on Transmitter

　　− 1 Watt delivered on Receiver side

　　− USB 5 V input

　　− Foreign Object Detection (FOD) optional

　　− Graphical interface for monitoring behavior

　　− Total reference design

　　− RoHS compliant

　　• STWBC-WA Wireless power transmitter:

　　− Cost effective Half Bridge topology with integrated drivers

　　− Optional Full Bridge configuration for 3 W applications

　　− Active presence detector

　　− 2-layer PCB to facilitate design

　　− Turnkey solution or customizable via APIs

　　− Parametric customization via Graphical interface

　　• STWLC04 wireless power receiver:

　　− Output voltage: 5 V regulated voltage

　　− Integrated high efficiency synchronous rectifier

　　− Li-Ion/Li-Pol charger functionality

　　− 4-layer PCB to facilitate design

　　图.1W无线电源系统STEVAL-ISB038V1外形图

　　无线电源发送器STEVAL-ISB038V1T

　　无线电源接收器STEVAL-ISB038V1R

　　The STEVAL-ISB038V1R wireless power receiver evaluation board is a reference design based on the STWLC04 device.

　　This receiver operates with the STWBC-WA wearable reference design (STEVAL-ISB038V1T) as a 5 V power supply or a simple CC/CV battery charger. Mode and parameter changes can be performed through the I²C bus which is easily accessible via the graphical interface.

　　无线电源接收器STEVAL-ISB038V1R主要特性:

　　NVM memory to store default configuration

　　a 5 V output or CC/CV charger (configurable)

　　overvoltage, overcurrent and overtemperature protection

　　a LED for power transfer progress status

　　an I²C connection for the user interface and for default configuration update

　　无线电源接收器STEVAL-ISB038V1R电性能:

　　图.无线电源接收器STEVAL-ISB038V1R外形图

　　无线电源接收器STEVAL-ISB038V1R材料清单:

　　STEVAL-ISB038V1R (USB-I²C dongle)材料清单:

　　无线电源发送器STEVAL-ISB038V1T材料清单:

　　详情请见:

en.steval-isb038b1_bom.pdf

en.DM00314001.pdf

en.DM00316692.pdf

en.steval-isb038v1_schematics.pdf