Switching regulator for power converter with dual mode feedback

Details Switching regulator for power converter with dual mode feedback Switching regulator for power converter with dual mode feedback

1999-04-12

2000-10-24

Wong, Peter S.

Electric power conversion systems

Current conversion

Including d.c.-a.c.-d.c. converter

363 97, 323902, H02M 3335, H02M 744

Patent

active

061376965

ABSTRACT:
A switching power supply (10) uses a switching regulator (18) that is capable of operating in a dual mode with either primary side regulation or secondary side regulation. The primary and secondary side regulation schemes generate opposite phase feedback signals. The switching regulator has first (56, 62) and second (70, 74) detectors on the feedback input which detect when the feedback signal is less than a first value and also detect when the feedback signal is greater than a second value. By monitoring either case, the switching regulator can enable and disable a gate drive signal in response to opposite phases of the feedback signal and thereby regulate the switching power supply.

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"TNY253/254/255 TinySwitch.TM. Family, Energy Efficient, Low Power Off-line Switchers", Power Integrations, Inc., Feb. 1999.

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