Power sequencing control

Details Power sequencing control Power sequencing control

Filed on

1994-06-09

Date issued

1996-08-27

Examiner

Wong, Peter S.

Patent Class

Electric power conversion systems

SubClass

Current conversion

SubSubClass

Having plural converters for single conversion

Other Related Categories

363 50, 327321, 307 75, H02M 700

Type

Patent

Status

active

Patent number

055507298

Description

ABSTRACT:
An apparatus for sequencing turn-on and turn-off of power converters includes a first DC to DC converter responsive to a control signal for asserting a voltage supply signal and a sense circuit responsive to the output of said first converter to sense the level of voltage at the output of the first converter and to provide an enable signal in response to the output of said first converter when the first converter reaches a desired value. The apparatus further includes a second DC to DC converter responsive to said enable signal to provide a second supply voltage at a second different voltage level. The sequencing control has a circuit responsive to said second supply voltage and the first supply voltage, to short the second DC to DC converter to a reference potential.

REFERENCES:
patent: 3984799 (1976-10-01), Fletcher et al.
patent: 4150425 (1979-04-01), Nagano et al.
patent: 4290101 (1987-09-01), Hergenhan
patent: 4868480 (1989-09-01), van der Linde
patent: 5472308 (1995-05-01), Brown

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