ZHCSCS0C September 2014 – March 2017
PRODUCTION DATA.
- 1 特性
- 2 應用范圍
- 3 說明
- 4 修訂歷史記錄
- 5 Device Comparison Table
- 6 Pin Configuration and Functions
- 7 Specifications
-
8 Detailed Description
- 8.1 Overview
- 8.2 Functional Block Diagram
- 8.3
Feature Description
- 8.3.1 Dynamic Rectifier Control
- 8.3.2 Dynamic Power Scaling
- 8.3.3 VO_REG Calculations
- 8.3.4 RILIM Calculations
- 8.3.5 Adapter Enable Functionality
- 8.3.6 Turning Off the Transmitter
- 8.3.7 Communication Current Limit
- 8.3.8 PD_DET and TMEM
- 8.3.9 TS/CTRL
- 8.3.10 PMODE Pin
- 8.3.11 I2C Communication
- 8.3.12 Input Overvoltage
- 8.3.13 Alignment Aid Using Frequency Information
- 8.4 Device Functional Modes
- 8.5
Register Maps
- 8.5.1 Wireless Power Supply Current Register 1
- 8.5.2 Wireless Power Supply Current Register 2
- 8.5.3 Wireless Power Supply Current Register 3
- 8.5.4 I2C Mailbox Register
- 8.5.5 I2C Mailbox Register 2
- 8.5.6 I2C Mailbox Register 3
- 8.5.7 Wireless Power Supply FOD RAM
- 8.5.8 Wireless Power User Header RAM
- 8.5.9 Wireless Power USER VRECT Status RAM
- 8.5.10 Wireless Power VOUT Status RAM
- 8.5.11 Wireless Power Proprietary Mode REC PWR MSByte Status RAM
- 8.5.12 Wireless Power REC PWR LSByte Status RAM
- 8.5.13 Wireless Power Prop Packet Payload RAM Byte 0
- 8.5.14 Wireless Power Prop Packet Payload RAM Byte 1
- 8.5.15 Wireless Power Prop Packet Payload RAM Byte 2
- 8.5.16 Wireless Power Prop Packet Payload RAM Byte 3
-
9 Application and Implementation
- 9.1 Application Information
- 9.2
Typical Applications
- 9.2.1
WPC v1.2 Power Supply 7-V Output With 1.4-A Maximum Current With I2C
- 9.2.1.1 Design Requirements
- 9.2.1.2
Detailed Design Procedure
- 9.2.1.2.1 Output Voltage Set Point
- 9.2.1.2.2 Output and Rectifier Capacitors
- 9.2.1.2.3 TMEM
- 9.2.1.2.4 Maximum Output Current Set Point
- 9.2.1.2.5 I2C
- 9.2.1.2.6 Communication Current Limit
- 9.2.1.2.7 Receiver Coil
- 9.2.1.2.8 Series and Parallel Resonant Capacitors
- 9.2.1.2.9 Communication, Boot, and Clamp Capacitors
- 9.2.1.3 Application Curves
- 9.2.2 Standalone 10-V WPC v1.2 Power Supply With 1-A Maximum Output Current in System Board
- 9.2.3
Standalone 10-V Power Supply With 1-A Maximum Output Current for 2S Charging System
- 9.2.3.1 Design Requirements
- 9.2.3.2
Detailed Design Procedure
- 9.2.3.2.1 Output Voltage Set Point
- 9.2.3.2.2 Output and Rectifier Capacitors
- 9.2.3.2.3 TMEM
- 9.2.3.2.4 Maximum Output Current Set Point
- 9.2.3.2.5 I2C
- 9.2.3.2.6 Communication Current Limit
- 9.2.3.2.7 Receiver Coil
- 9.2.3.2.8 Series Resonant Capacitors
- 9.2.3.2.9 Communication, Boot, and Clamp Capacitors
- 9.2.3.2.10 VRECT Clamp
- 9.2.3.3 Application Curves
- 9.2.1
WPC v1.2 Power Supply 7-V Output With 1.4-A Maximum Current With I2C
- 10Power Supply Recommendations
- 11Layout
- 12器件和文檔支持
- 13機械、封裝和可訂購信息
1 特性
3 說明
bq51025 器件是一款全封閉式無線電源接收器，此接收器能夠在無線電源聯盟 (WPC) Qi 協議下運行，使無線電源系統(tǒng)在與 Qi 感應發(fā)送器配合使用時能夠向系統(tǒng)傳送 5W 功率，在與 bq500215 初級側控制器配合使用時可傳送高達 10W 功率。bq51025 器件可根據 WPC v1.2 規(guī)范提供單器件功率轉換（整流和穩(wěn)壓）以及數字控制和通信。憑借市場領先的系統(tǒng)效率 (84%) 和可調輸出電壓，bq51025 器件可實現無與倫比的系統(tǒng)優(yōu)化。bq51025 的輸出電壓最高可達 10V，能夠靈活地為 2S 電池應用提供無線電源解決方案，并使系統(tǒng)散熱性能達到最佳狀態(tài)。I2C 接口可允許系統(tǒng)設計人員實現新 功能， 例如找正發(fā)送器表面上的接收器或檢測接收器上的異物。bq51025 器件符合 WPC v1.2 通信協議，因此該器件能夠與所有 WPC 發(fā)送器解決方案兼容。此接收器可在市場領先的封裝、效率和解決方案尺寸中同時實現同步整流、穩(wěn)壓和控制與通信。
器件信息(1)
| 器件型號 | 封裝 | 封裝尺寸（標稱值） |
|---|---|---|
| bq51025 | DSBGA (42) | 3.60mm × 2.89mm |
- 要了解所有可用封裝，請見數據表末尾的可訂購產品附錄。
空白
簡化電路原理圖
bq51025 使用 bq500215 TX 控制器時的系統(tǒng)效率
