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无线充发射器15W方案
15W WPC Qi无线充电发射方案
产品型号:JQ3215
品牌:ST
产品分类:无线充发射器15W方案
产品价格:面议
最小起订:100 套
最大供货:800000 套
发货期限:3天以内发货
发布时间:2018-08-23 15:31:30 | 浏览量:2326
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代理证书

The STWBC-MC is the digital controller for the wireless battery charger (WBC) transmitters (TX) from STMicroelectronics optimized for the extended power profile (EPP) Wireless Power Consortium (WPC) multi-coil applications up to 15 W.


It offers the most flexible and efficient solution for controlling the power transfer to a receiver (RX) in WBC-enabled applications such as smartphones, tablets and other battery-powered devices that use the electromagnetic induction for recharging.


The TX is responsible for controlling the transmitting coil and generating the correct amount of power requested by the RX. The RX continuously provides the transmitter with the correct power level requested, by modulating the transmitter carrier through the controlled resistive or capacitive load. Generating the correct amount of power ensures the highest level of end-to-end efficiency due to reduced energy losses. It also helps maintaining a lower operational temperature.


The TX can adapt to the amount of energy transferred by the coil by modulating the frequency, duty cycle or amplitude of the PWM voltage on the transmitting coil.


The STWBC-MC is capable of bidirectional communication with the RX as specified by the WPC 1.2 protocol.


Key Features


Digital controller for wireless battery charger transmitter

Multi-coil inductive transmitters optimized for:

Cell phones and smartphones

Tablets and phablets

Charging accessories

Support for Wireless Power Consortium (WPC) 1.2 EPP applications

Backward compatible with WPC BPP and 1.1 5W applications

Support for half-bridge topology with DC/DC

VIN range: 3 V to 5.5 V

Supports USB VIN

Active presence detector

Foreign object detection

Q-factor measurement

Parametric customization via GUI

Turnkey firmware solution

Peripherals

10-bit ADC

UART interface

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: 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

Transmitter reference design:

Multi-coil EPP topology

2-layer PCBs

Active object detection

Graphical user interface for application monitoring

Operating temperature: -40 °C up to 105 °C

Package: VFQFPN32 5 x 5 mm

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