ZHCSCS0C September 2014 – March 2017
PRODUCTION DATA.
- 1 特性
- 2 应用范围
- 3 说明
- 4 修订历史记录
- 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器件和文档支持
- 13机械、封装和可订购信息
1 特性
3 说明
bq51025 器件是一款全封闭式无线电源接收器，此接收器能够在无线电源联盟 (WPC) Qi 协议下运行，使无线电源系统在与 Qi 感应发送器配合使用时能够向系统传送 5W 功率，在与 bq500215 初级侧控制器配合使用时可传送高达 10W 功率。bq51025 器件可根据 WPC v1.2 规范提供单器件功率转换（整流和稳压）以及数字控制和通信。凭借市场领先的系统效率 (84%) 和可调输出电压，bq51025 器件可实现无与伦比的系统优化。bq51025 的输出电压最高可达 10V，能够灵活地为 2S 电池应用提供无线电源解决方案，并使系统散热性能达到最佳状态。I2C 接口可允许系统设计人员实现新 功能， 例如找正发送器表面上的接收器或检测接收器上的异物。bq51025 器件符合 WPC v1.2 通信协议，因此该器件能够与所有 WPC 发送器解决方案兼容。此接收器可在市场领先的封装、效率和解决方案尺寸中同时实现同步整流、稳压和控制与通信。
器件信息(1)
| 器件型号 | 封装 | 封装尺寸（标称值） |
|---|---|---|
| bq51025 | DSBGA (42) | 3.60mm × 2.89mm |
- 要了解所有可用封装，请见数据表末尾的可订购米6体育平台手机版_好二三四附录。
空白
简化电路原理图
bq51025 使用 bq500215 TX 控制器时的系统效率
