[原创] ST STNRGPF01大功率CCM PFC开关电源解决方案

ST公司的STNRGPF01是三路交错式CCM PFC数字控制器,能驱动多达三路交错通路,产生合适的信号;器件工作在固定频率CCM模式,采用平均电流模式控制和实现混合信号(模拟/数字)控制,主要用在大功率电源如焊接,工业马达,UPS,电池充电器,电源和空调.本文介绍了STNRGPF01主要特性,框图,STNRGPF01控制方案图以及3kW评估板STNRGPF01EVAL-IPFC01V1主要特性,电路图和材料清单.

The STNRGPF01 is a digital controller designed specifically for interleaved PFC boost

topologies and intended for use in high power applications.

The controller is capable of driving up to 3 interleaved channels, generating the proper

signals in each condition. Moreover, it implements a flexible phase shedding strategy that

enables the correct number of PFC channels based on the actual load condition. With this

function, the STNRGPF01 is always able to guarantee the highest power efficiency across awide range of load current requirements.

The device works in CCM at fixed frequency with average current mode control, and

implements mixed signal (analog/digital) control. The inner current loop is performed by

hardware, ensuring cycle-by-cycle regulation. The outer voltage loop is performed by a

digital PI controller with fast dynamic response.

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