PULSE WIDTH MODULATION TYPE DC-DC DC CONVERTER REDUCING DISTORTION OF RIPPLE CURRENT COMPONENT MOREOVER HAVING ZERO-VOLTAGE SWITCHING FUNCTION

摘要

PURPOSE: To economically constitute a pulse width modulation type DC-DC converter, which reduces the distortion of ripple current components and furthermore has a switching function and is low in loss. ;CONSTITUTION: This converter is equipped with an input voltage source 14, an inductance 10 for energy storage, a capacitor 16, at least one switching circuit 12 for connecting the inductance alternately to either the input power source 14 or the capacitor 16, laying it over, a full-wave rectifying circuit 20 for rectifying the voltage across the inductance 10, filter circuits 22 and 24 being connected to filter the voltage after rectification so as to generate the DC output voltage, and a control circuit for controlling the operation of the switching circuit 12 so as to modulate the DC output voltage.;COPYRIGHT: (C)1993,JPO