Hysteretic regulator and control method having switching frequen

Details Hysteretic regulator and control method having switching frequen Hysteretic regulator and control method having switching frequen

1999-09-17

2000-11-14

Wong, Peter S.

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

323284, G05F 140, G05F 144

Patent

active

061474789

ABSTRACT:
A DC to DC power converter (58) and method of controlling the DC to DC power converter (58). The converter (58) has a first switch (S.sub.1) coupled to a second switch (S.sub.2). The converter (58) is adapted to receive an input voltage V.sub.in, generate an output voltage V.sub.out, and operate at a switching frequency. A hysteretic mode control circuit (52) includes a first circuit generating a ramp signal at input (56) for controlling the converter (58). The first circuit includes a first capacitor (C.sub.1) with the ramp signal generated at an end of the first capacitor (C.sub.1). The hysteretic mode control circuit (52) is coupled to the first (S.sub.1) and second (S.sub.2) switches, where the switching frequency of the first and second switches is dependent upon the ramp signal (56) determined by the value of the components of the first circuit rather than on the voltage from the output filter of the DC to DC power converter. The invention is particularly useful for applications such as DSPs and mixed signal or analog circuits.

REFERENCES:
patent: 3660753 (1972-05-01), Judd et al.
patent: 4456872 (1984-06-01), Froeschle
patent: 5345165 (1994-09-01), Froeschle
patent: 5399958 (1995-03-01), Iyoda
patent: 5548206 (1996-08-01), Soo
patent: 5587650 (1996-12-01), Massie
patent: 5623198 (1997-04-01), Massie et al.
patent: 5680034 (1997-10-01), Redl
patent: 5770940 (1998-06-01), Goder
patent: 5818207 (1998-10-01), Hwang
patent: 5894243 (1999-04-01), Hwang
patent: 5994882 (1999-11-01), Ma
"A Fast, Efficient Synchronous-Buck Controller for Microprocessor Power Supplies," Proceedings from High Frequency Power Conversion Conference, Santa Clara, CA, Nov. 7-13, 1998, pp. 182-198 (Dave Briggs, Robert Martinez, Rais Miftakhhutdinov, Dale Skelton).

Affiliated with

Also associated with

Rating

Hysteretic regulator and control method having switching frequen does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hysteretic regulator and control method having switching frequen, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hysteretic regulator and control method having switching frequen will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2068318