Apparatus and method for step-down switching voltage regulation

Details Apparatus and method for step-down switching voltage regulation Apparatus and method for step-down switching voltage regulation

2006-05-16

2006-05-16

Riley, Shawn (Department: 2838)

Electricity: power supply or regulation systems

In shunt with source or load

Using a three or more terminal semiconductive device

C323S228000

Reexamination Certificate

active

07045993

ABSTRACT:
A current mode PWM buck regulator is provided. The regulator includes a top-side transistor, a bottom-side transistor, an inductor, a sample-and-hold circuit, a ramp generator, a PWM comparator, an error amplifier, and a current sense amplifier. A current through the low-side transistor is sensed by the current sense amplifier. Also, a current sense voltage provided by the current sense amplifier is sampled when the low-side transistor is on, and held when the low-side transistor is off. The ramp generator is arranged to generate a voltage ramp that emulates the upslope of the inductor current. Additionally, the sampled low-side transistor current is combined with the voltage ramp. The PWM comparator is arranged to provide a PWM signal by comparing the voltage ramp to a comparison signal provided by the error amplifier.

REFERENCES:
patent: 6246220 (2001-06-01), Isham et al.
patent: 6396252 (2002-05-01), Culpepper et al.
patent: 6476589 (2002-11-01), Umminger et al.

Affiliated with

Also associated with

Rating

Apparatus and method for step-down switching voltage regulation does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus and method for step-down switching voltage regulation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for step-down switching voltage regulation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3584655