BQ50002
ワイヤレス パワー トランスミッタ向け、アナログ フロント エンド
BQ50002
- 5-V Transmitter AFE Compatible with Wireless Power Consortium (WPC) V1.2 A11 Low Power Transmitter Specification
- Designed to be used with bq500511 WPC Controller
- Suitable for WPC and Proprietary 5-V Wireless Power Transmitters
- Supports 5 W on the receiver output
- Integrates all the Analog Functions Required in a Wireless Power Transmitter
- MOSFET Drivers and Synchronous N-Channel Power FETs
- Accurate Current Sense
- Variable Frequency Oscillator
- High-Efficiency Voltage Regulator
- High-Sensitivity Demodulator to Decode Signals from Receiver
- 2-Chip Solution Enables High-Efficiency Transmitter Designs of >75% Efficiency
- Ultra-Low-Standby Power, Even During Digital Ping (<30 mW)
- Dynamic Power Limiting (DPL)Enables Operation from Input Sources with Limited Power
- System LED Indication of Charging State and Fault Status
- Accurate Foreign Object Detection Method (FOD)
The bq50002 is a highly integrated wireless power transmitter analog front end that contains all of the analog components required to implement a WPC compliant 5-V transmitter. bq50002 integrates a full-bridge power driver with MOSFETs, variable-frequency oscillator, two-channel communication demodulator, linear regulator, and protection circuits. bq50002 must be used together with the digital controller bq500511 to realize a compact two chip wireless power transmitter solution. The bq500511 safely engages the RX device, receives packet communication from the powered device and manages the power transfer according to WPC v1.2 specification.
The system supports foreign object detection (FOD) by continuously monitoring the amount of power transferred and comparing that to the amount of received power, as reported by the receiver. This protects against power loss to metal objects misplaced in the wireless power transfer field. In order to do this, the bq50002 measures the input DC current very accurately using a current sense amplifier. Should any abnormal condition develop during power transfer, the bq500511 handles it and provides indication outputs. Comprehensive status and fault monitoring features enable a low cost yet robust WPC-certified wireless power system design.
The bq50002 is available in a thermally enhanced 5.00 mm × 5.00 mm, 32-pin QFN package.
技術資料
| 種類 | タイトル | 最新の英語版をダウンロード | 日付 | |||
|---|---|---|---|---|---|---|
| * | データシート | bq50002 Low-Cost 5-V Wireless Power Transmitter Analog Front End データシート (Rev. A) | 2015年 9月 15日 | |||
| アプリケーション・ノート | bq500511 Wireless Power Transmitter I2C Interface | 2016年 3月 4日 | ||||
| EVM ユーザー ガイド (英語) | BQ50002 Wireless Power TX Evaluation Module User's Guide | 2015年 10月 16日 |
設計と開発
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| パッケージ | ピン数 | ダウンロード |
|---|---|---|
| VQFN (RHB) | 32 | オプションの表示 |
購入と品質
- RoHS
- REACH
- デバイスのマーキング
- リード端子の仕上げ / ボールの原材料
- MSL 定格 / ピーク リフロー
- MTBF/FIT 推定値
- 材質成分
- 認定試験結果
- 継続的な信頼性モニタ試験結果
- ファブの拠点
- 組み立てを実施した拠点