Development of Interleaved Average Current Boost Power Factor Corrector In high-power power supplies, the pre-stage converter usually operates in the average current mode of the boost power factor corrector. When operating in the average current mode, the switching frequency is fixed and has a lower harmonic content. This method mainly uses a dual-loop control method to achieve the purpose of controlling the input current waveform and stabilizing the output voltage value. This paper aims to study the interleaved control power factor correction chip to realize the interleaved boost power factor corrector. The boost converter is the most common pre-regulator architecture. The interleaved boost conversion circuit can reduce the input and output ripple current of the power factor correction pre-regulator power converter, thereby reducing the circuit pressure that the boost inductor value and the output capacitor need to bear. The circuit architecture adopts fixed frequency average current control to operate the boost converter in the continuous current mode to improve the output power and power density. Finally, this paper uses UCC28070 to implement a 1-kW boost converter for verification.
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