Surge and overcurrent limiting circuit for power converters

Details Surge and overcurrent limiting circuit for power converters Surge and overcurrent limiting circuit for power converters

1996-05-09

1998-05-19

Krishnan, Aditya

Electric power conversion systems

Current conversion

With condition responsive means to control the output...

G05F 146

Patent

active

057544190

ABSTRACT:
Current flow between the boost inductor and the output bulk capacitor in a boost converter type power factor correction circuit for an AC-to-DC power converter is controlled by a single power MOSFET which is operated by a gate driver in a low-level constant current surge limiting mode during initial charging of the bulk capacitor, and in a high-level current-limiting mode once the bulk capacitor is sufficiently charged for normal operation. The power MOSFET gate driver is in turn controlled by a control logic which is connected to the input and output voltages of the boost converter, and which allows the circuit to cope with short circuits and input power interruptions and glitches.

REFERENCES:
patent: 5001620 (1991-03-01), Smith

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