TIDA-010000
适用于 380-480VAC 电机驱动器的 50W 光耦稳压多路输出反激式转换器参考设计
TIDA-010000
概述
This reference design showcases a robust, compact, and efficient main power supply in DCM flyback topology for motor drives using the UCC28740 flyback controller. This design can work with a wide input voltage range of 290–1000 VDC delivering up to 50 W of continuous power. Multiple output rails at 24 V (1.25 A), 15 V (0.67 A), 5 V (2 A), 3.3 V (0.1 A) are available for control, gate drive, sensor, I/O, and other applications; additionally an isolated 5-V (0.1 A) output is provided for isolated communication power. The load and line regulation are within 0.5% over the entire operation range by the use of opto-regulated feedback. Key benefits of the UCC28740 device include valley switching enabling higher efficiency (>85% at 550 VDC, 50 W), internal HV FET enabling self-start without external circuitry, and frequency dithering that reduces EMI.
特性
- Wide input range of 290-1000V DC
- Self-start using internal 700V HC FET without any external circuitry
- Load and line regulation < 0.5%
- Multiple output rails - 24V(1.25A), 15V(0.67A), 5V(2A), 3.3V(0.1A) and isolated 5V(0.1A) providing 50W of output power in ambient of up to 70°C. De-rated operation up to 85°C ambient
- Output overvoltage, output overcurrent and input undervoltage protection
- Frequency dithering to reduce EMI
我们开发的全面组装电路板仅用于测试和性能验证，不可用于销售。
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技术文档
| 类型 | 标题 | 下载最新的英文版本 | 日期 | |||
|---|---|---|---|---|---|---|
| 设计指南 | 适用于 380-480VAC 电机驱动器的 50W 光耦合稳压多路输出反激式转换器参考设计 (Rev. A) | 英语版 (Rev.A) | 2018年 11月 26日 |