High precision DC to DC converter with wide load range and gate drive circuit for use therein

摘要

A high precision DC/DC resonant converter with a wide load range includes a first switch leg having one end connected to an anode terminal of a DC power source and the other connected to a cathode terminal of the DC power source to independently operate at a switching frequency used in an application of an output voltage for no load or a light load equal to or less than a rated load; and one or more second switch legs having one end connected to the anode terminal of the DC power source and the other end connected to the cathode terminal of the DC power source to operate at a switching frequency for the rated load or a frequency equal to or less than the switching frequency used in the application of the output voltage for no load or the light load that the first switch leg takes charge of.

主权项

1. A resonant converter for converting a direct current (DC) into another DC with a desired level, comprising:
a first switch leg having one end connected to a positive terminal of a DC power source and the other end connected to a negative terminal of the DC power source to independently operate at a switching frequency used in an application of an output voltage for no load or a light load equal to or less than a rated load and operate so as to reduce a ripple of the output voltage at a frequency equal to or less than the switching frequency used in the application of the output voltage for no load or the light load equal to or less than the rated load; and one or more second switch legs having one end connected to the positive terminal of the DC power source and the other end connected to the negative terminal of the DC power source to operate at a switching frequency for the rated load or a frequency equal to or less than the switching frequency used in the application of the output voltage for no load or the light load that the first switch leg takes charge of.