Current balanced DC-to-DC converter

Details Current balanced DC-to-DC converter Current balanced DC-to-DC converter

1980-07-28

1981-12-22

Shoop, William M.

Electric power conversion systems

Current conversion

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

363 97, H02M 3335

Patent

active

043074413

ABSTRACT:
A novel feedback circuit for use in a DC-to-DC converter accurately adjusts the pulse width of the control pulses to a pair of switching transistors to minimize current imbalance. The switching transistors generate current pulses in the primary windings of a center tapped transformer. The feedback path senses the current pulses in the primary circuit of the transformer. A filter in the feedback path has a bandwidth centered at about the frequency of any current imbalance. The high gain, closed loop feedback path changes the slope of alternate linear ramp voltage pulses, and hence varies the pulse width of the pulses presented to the control terminals of the switching transistors.

REFERENCES:
patent: 3657631 (1972-04-01), Martens et al.
patent: 3859583 (1975-01-01), Reed
patent: 4148097 (1979-04-01), Deisch
patent: 4162524 (1979-07-01), Jansson

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