Current mode control arrangement with load dependent ramp signal

Details Current mode control arrangement with load dependent ramp signal Current mode control arrangement with load dependent ramp signal

1986-07-30

1987-06-09

Beha, Jr., William H.

Electric power conversion systems

Current conversion

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

323285, 363 80, H02M 3335

Patent

active

046725180

ABSTRACT:
A switching converter in which current mode voltage regulation is implemented includes circuitry to add ramp compensation to the sensed current signal at light load and reduce or disable this ramp signal compensation at heavy load. This load dependent ramp signal improves the stability of operation of the converter and maintains its inherent current limit performance over a wide range of loading. An alternative connection allows for disabling the current sense signal and hence, transforming the current mode to voltage mode control under light load.

REFERENCES:
patent: 4150424 (1979-04-01), Nuechterlein
"Simple Switching Control Method Changes Power Converter Into a Current Source", Cecil W. Deisch, PESC '78 Record, IEEE Power Electronics Specialists Conference-1978, pp. 300-306.

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