Overcurrent protection for switching mode power converter

Details Overcurrent protection for switching mode power converter Overcurrent protection for switching mode power converter

1987-10-06

1990-05-22

Shoop, Jr., William M.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

363 56, H02H 712

Patent

active

049282000

ABSTRACT:
A circuit for decreasing the minimum duty ratio of a switching element in a power converter in response to a signal indicating that sensed current exceeds a second threshold. The circuit turns off the switching element when the sensed current exceeds a first threshold. The minimum duty ratio may be decreased, for example by increasing the period of the switching element or by increasing the "off" time of the switching element. The circuit protects against current runaway.

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Comparative Analysis of Overload Protection Methods for Switching-Mode Voltage Regulators by R. Redl Sep. 1977.

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