Texas Instruments UCC28704EVM-724电源评估模块
Texas Instruments UCC28704EVM-724电源评估模块 (EVM) 用于演示符合全球外部电源效率标准的低成本解决方案。该器件帮助用户评估 UCC28704 离线恒定电压和恒定电流返驰控制器。该评估模块是 10W 离线隔离式电源，可在 USB-A 端口提供 5V 输出。不使用光耦合器或次级侧反馈电路即可将转换器输出电压和电流调节至 5% 的精度。该评估模块演示了无需添加二次侧同步整流器的低成本解决方案。
特性
- 通用交流输入范围 (85V至265VAC)、5V/2A隔离输出
- 输出电压 (CV) 和电流 (CC) 精度为5%，具有一次侧稳压 (PSR)
- 平均效率为83%
- 0.15Ω电缆末端的输出电压纹波为80mVpp
- 故障保护：输出过压、过流和负载短路
必要设备
- Voltage Source
- Isolated AC source or variable AC transformer capable of 265VAC cable of handling 10W
- Voltmeter
- Digital voltage meter
- Power Analyzer
- Capable of measuring 1mW to 10W of input power and capable of handling 265V RMS input voltage
- Some power analyzers may require a precision shunt resistor for measuring input current to measure input power of 5W or less
- Read the power analyzer’s user manual for proper setup
- Oscilloscope
- 4 Channel 100MHz
- Probes capable of handling 600V
- Output Load
- Resistive or electronic load capable of handling 15W at 5V
- Recommended Wire Gauge (Insulated 22 AWG)
Test Setup
发布日期: 2016-05-11
| 更新日期: 2025-03-06