STEVAL-IHT008V1，具有浪涌电流限制和绝缘交流开关控制的低待机损耗前端评估板, 使用 STMicroelectronics 的 VIPER26LD 的参考设计 ——

STEVAL-IHT008V1，具有浪涌电流限制和绝缘交流开关控制的低待机损耗前端评估板

MartinFowler 发布

STEVAL-IHT008V1 评估板限制对直流总线电容器充电的浪涌电流，使其符合 IEC 61000-3-3 标准。该浪涌电流基于整流桥的软启动程序，该软启动程序通过与电源线串联的 TRIAC 实现，并在启动阶段通过渐进式相位控制进行控制。该解决方案大大减少了待机损耗，因为不需要时直流总线可以与交流电源完全断开。通过关闭串联 TRIAC 即可轻松关闭直流母线，无需额外的继电器在待机状态下打开电路

说明

STEVAL-IHT008V1, Evaluation Board limits the inrush current charging a DC bus capacitor so that it is compliant with the IEC 61000-3-3 standard. This inrush current is based on a soft-start procedure for the rectifier bridge achieved with a TRIAC added in series with the mains line, which is controlled through progressive phase-control during the startup phase. This solution drastically reduces standby losses as the DC bus can be totally disconnected from the AC mains when it is not required. The DC bus is easily turned off by turning off the series TRIAC, without needing an additional relay to open the circuit in standby

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