Slew rate limited reference for a buck converter

Details Slew rate limited reference for a buck converter Slew rate limited reference for a buck converter

2005-03-22

2005-03-22

Du, Thuan (Department: 2116)

Electrical computers and digital processing systems: support

Computer power control

C323S224000, C323S282000, C323S283000, C323S284000, C323S285000

Reexamination Certificate

active

06871289

ABSTRACT:
A compensated reference voltage for the controller of a buck regulator corrects for offsets and controls the rate at which the output load current can change in response to a change in the reference setting output voltage level of the buck converter. A current source is coupled to a resistor that has one terminal connected to the ground potential of the output voltage. The voltage across this resistor generates a remote reference voltage. A feedback current is generated as a function of the difference between the remote reference voltage and the output voltage. The feedback current is time integrated to form the compensated reference, which is used to control the ON-time of the buck converter.

REFERENCES:
patent: 5499184 (1996-03-01), Squibb
patent: 6366068 (2002-04-01), Morishita
patent: 6495995 (2002-12-01), Groom et al.
patent: 6522113 (2003-02-01), Betten
patent: 6525516 (2003-02-01), Schultz et al.
patent: 6815937 (2004-11-01), Poon et al.

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