Switching regulator and electronic device therewith

Details Switching regulator and electronic device therewith Switching regulator and electronic device therewith

2006-03-14

2009-08-18

Laxton, Gary L (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

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

C323S284000

Reexamination Certificate

active

07576531

ABSTRACT:
A switching regulator according to the invention includes: an output switching element; an output feedback circuit generating an error voltage (Verr) according to an error between an output voltage (Vout) and a target voltage; a switching control circuit turning on and off the output switching element based on the error voltage (Verr); a short-circuit current protection circuit that includes a first comparator (CMP1) comparing a reference voltage (Vs) commensurate with an output current (iout) with a first threshold voltage (Vth1) and that instructs, based on this comparison result, whether to drive the switching control circuit; and a drive current generating circuit that includes a second comparator (CMP2) comparing the error voltage (Verr) with a second threshold voltage (Vth2) and that determines, based on this comparison result, whether to supply a drive current (i1) to the first comparator (CMP1). With this configuration, it is possible to reduce the waste of electric power without spoiling the reliability of short-circuit current protection.

REFERENCES:
patent: 3597655 (1971-08-01), Forte
patent: 4929882 (1990-05-01), Szepesi
patent: 5675240 (1997-10-01), Fujisawa et al.
patent: 6166530 (2000-12-01), D'Angelo
patent: 6501253 (2002-12-01), Marty
patent: 2004/0004469 (2004-01-01), Pihet et al.
patent: 2005/0275391 (2005-12-01), Ito et al.
patent: 10-214123 (1998-08-01), None
patent: 2002-300773 (2002-10-01), None
patent: 2003-078362 (2003-03-01), None

Affiliated with

Also associated with

Rating

Switching regulator and electronic device therewith does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Switching regulator and electronic device therewith, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Switching regulator and electronic device therewith will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4100635