Short circuit protection for power factor correction circuit

Details Short circuit protection for power factor correction circuit Short circuit protection for power factor correction circuit

1996-02-28

1998-03-10

Gaffin, Jeffrey A.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific quantity comparison means

361 88, 363 89, 323224, H02H 328, H02M 700, G05F 1563

Patent

active

057268452

ABSTRACT:
In a power factor correction circuit using a control power MOSFET connected in series between the boost converter and the output, overcurrent damage to the power MOSFET upon occurrence of a short circuit in the output is prevented by sensing a drop in the output voltage below a predetermined level above the peak of the rectified AC boost converter input, and shutting the power MOSFET off when such a drop is sensed.

REFERENCES:
patent: 4459537 (1984-07-01), McWhorter
patent: 4525765 (1985-06-01), Brajder
patent: 5001620 (1991-03-01), Smith
patent: 5515261 (1996-05-01), Bodgan
Motorola MC34262/MC33262 Power Factor Controllers Specification Sheets, Motorola Inc., Rev. 1, 1996, pp. 1-16, 1996.

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