Switch-mode power supply with dynamic adjustment of current sens

Details Switch-mode power supply with dynamic adjustment of current sens Switch-mode power supply with dynamic adjustment of current sens

1988-05-10

1989-03-07

Beha, Jr., William H.

Electric power conversion systems

Current conversion

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

323281, 323282, 363 25, 363 56, H02M 3156, H02M 3337

Patent

active

048111848

ABSTRACT:
In a dc-to-dc converter, alternating current or pulsating direct current produced by a cyclically switched power supply passes through semiconductor rectifiers or diodes. The rectifiers may be subject to unwanted conduction characteristics attributable to charge storage, which may result in cyclical current spikes during normal operation. A current sensor is coupled to sense a current which includes the cyclical spikes. A controllable attenuator or gain element couples the sensed current in a feedback loop to shut down the converter in the event of an overcurrent. To reduce the possibility of shut-down due to the normal cyclical current spikes, the attenuator or gain element is cyclically switched so as to reduce the sensitivity to the current spikes when they occur.

REFERENCES:
patent: 3859586 (1975-01-01), Wadlington
patent: 4020423 (1977-04-01), Guyot et al.
patent: 4069452 (1978-01-01), Conway et al.
patent: 4109198 (1978-08-01), Uemo
patent: 4121121 (1978-10-01), Gabeler
patent: 4144544 (1979-03-01), Fernsler
patent: 4144545 (1979-03-01), Fernsler et al.
patent: 4163909 (1979-08-01), Harr
patent: 4282014 (1981-08-01), Winkler et al.
patent: 4392103 (1983-07-01), O'Sullivan et al.
patent: 4399414 (1983-08-01), Bird
patent: 4423457 (1983-12-01), Brajder
patent: 4453193 (1984-06-01), Huang et al.
patent: 4524412 (1985-06-01), Eng
patent: 4569009 (1986-02-01), Genuit
patent: 4586120 (1986-04-01), Malik et al.
patent: 4616301 (1986-10-01), Small
patent: 4626979 (1986-12-01), JaQuay
patent: 4686617 (1987-08-01), Colton
patent: 4725769 (1988-02-01), Cini et al.
Mumaw, "Programmable Regulator Card," IBM Tech. Discl. Bul., vol. 20, No. 6, p. 2180, Nov. 1977.
"Modelling and Analysis of Switching DC-to-DC Converters in Constant-Frequency Current-Programmed Moe" by HSU et al., published 1979 by IEEE; pp. 284-301.

Affiliated with

Also associated with

Rating

Switch-mode power supply with dynamic adjustment of current sens does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Switch-mode power supply with dynamic adjustment of current sens, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Switch-mode power supply with dynamic adjustment of current sens will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1674125