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In this paper, the AC-DC and DC-DC interleaved control for power supply is proposed. In conventional power supplies, the front-stage AC-DC power-factor correction (PFC) converter and the rear-stage DC-DC converter are controlled independently; therefore, the current ripple on the DC-bus capacitor is uncontrolled and significant. One-cycle control is used in the front-stage AC-DC PFC converter such...
A one-cycle control based constant frequency operating trailing-edge continuous conduction mode (CCM) boost type power factor correction (PFC) IC with instant-switch-current control is proposed. By using a level shift circuit, this PFC controller can be operated using unipolar supply voltage. Moreover, the functions of leading edge blanking (LEB) and over voltage protection (OVP) are integrated into...
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