TI bq5102x WPC 5W无线电源接收器解决方案

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TI bq5102x WPC 5W无线电源接收器解决方案 [复制链接]

PowerInt公司的LYTSwitch-4系列产品LYT4211－4218/4311-4318把控制器和高压大功率FET组合在同以封装中,控制器提供高的功率因素和恒流输出,具有优于±5%的恒流性能,TRIAC调光,全亮度的起动时间小于250ms,功率因素大于0.9,高达92%的效率,开关频率132kHz可使用较小的磁性材料.主要用在大功率LED驱动.本文介绍LYTSwitch－4系列产品主要特性,框图和典型电路,以及大功率TRIAC调光LED驱动器主要特性,电路图,材料清单和PCB元件布局图.

bq5102x主要特性:

Robust 5-W Solution With 50% Lower Losses
for Improved Thermals
Inductorless Receiver for Lowest Height
Profile Solution
Adjustable Output Voltage (4.5 to 8 V) for Coil
and Thermal Optimization
Fully Synchronous Rectifier With 96% Efficiency
97% Efficient Post Regulator
79% System Efficiency at 5 W
WPC v1.1 Compliant Communication
Patented Transmitter Pad Detect Function Improves User
Experience
Alignment Feature Through I2C Allows for User
Training to Find Best Position on Surface of TX

bq5102x主要用用领域:

Smart Phones, Tablets, and Headsets
Wi-Fi Hotspots
Power Banks
Other Handheld Devices

图1. bq5102x简化电路图

图2. bq5102x双模式无线电源系统框图

图3. bq5102x功能框图

图4. bq5102x WPC 5W电路图

图5. 嵌入系统板的bq5102x电路图

Bq51020无线电源接收器评估模块bq51020EVM-520 (PWR520-002)

The bq51020EVM-520 (PWR520-002) wireless power receiver evaluation kit (EVM) from TI is a high performance, easy-to-use development kit for the design of wireless power solutions. It helps designers to evaluate the operation and performance of the bq51020 IC, a secondary-side receiver device for wireless power transfer in portable applications.

The bq51020 device is a fully-contained, wireless power receiver capable of operating in WPC v1.1 protocol which allows a wireless power system to deliver up to 5 W to the system when used with a Qi inductive transmitter. The bq51020 device provides a single device power conversion (rectification and regulation) as well as the digital control and communication for WPC specification. The kit enables designers to speed up the development of their end-applications.

The bq51020EVM-520 evaluation module (PWR520-002) demonstrates the receiver portion of the wireless power system. This receiver EVM is a complete receiver-side solution that produces 5-W output power at up to 1-A load with adjustable output voltage.

• The receiver can be used in any number of low-power battery portable devices as a power supply for a battery charger. With contact-free charging capability, no connections to the device are needed.

• Highly-integrated wireless power receiver solution
– Ultra-efficient synchronous rectifier
– Very-high efficiency post regulator
– WPC v1.1-compliant communication and control
– Only one IC required between RX coil and DC output
• Programmable output voltage to optimize performance for application
• Adaptive Communication current limit (CM_ ILIM) for robust communication.
• Supports 20-V max input
• Low-power dissipative overvoltage clamp
• Overvoltage, overcurrent, overtemperature protection
• Low-profile, external pick-up coil
• Frame is configured to provide correct receiver to transmitter spacing
• Room above coil for testing with battery, key for Foreign Object Detection (FOD) tuning
• Options to adjust the input current limit and output voltage using resistors
• Flexibility for Foreign Object Detection (FOD) tuning
• Adjustable resistor that can be used to set RFOD
• Temperature sensing can be adjusted using external resistors
• Micro-USB connector for adapter testing configuration
• WPG LED indicator (turns on as VOUT goes high)
• PD_DET LED indicator --turns on as the RX is on TX pad

图6. 评估模块bq51020EVM-520电路图
评估模块bq51020EVM-520材料清单:



图7.评估模块bq51020EVM-520布局案例图

图8.评估模块bq51020EVM-520顶层PCB元件布局图

详情请见:
查看详情
和查看详情
以及http://www.ti.com/lit/ug/sluuax6a/sluuax6a.pdf




bq51020.pdf.pdf (1.22 MB, 下载次数: 13)

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youluo

这个好，感谢分享。

kemasz

过来看看~~~~~