Soft-start circuit for power regulators

Details Soft-start circuit for power regulators Soft-start circuit for power regulators

2007-11-06

2009-11-17

Laxton, Gary L (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

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

C323S316000, C323S901000

Reexamination Certificate

active

07619397

ABSTRACT:
One embodiment of the present invention includes a system for providing a soft-start for a power regulator comprising a differential transistor pair that receives an input current and conducts a first current through a first transistor and a second current through a second transistor. One of the first and second current changes in response to a change in the other to maintain a sum of the first and second current being substantially equal to the input current. The system also comprises a comparator that provides an output signal based on a comparison of a first input voltage and a second input voltage associated with the first current and the second current, respectively. The system further comprises a current source activated by the output signal to charge a capacitor that increases a soft-start reference voltage associated with control of the power regulator and which controls the change in the other of the first and second current.

REFERENCES:
patent: 6617833 (2003-09-01), Xi
patent: 7170352 (2007-01-01), Caldwell
patent: 7218080 (2007-05-01), Yang
patent: 7405549 (2008-07-01), Kitagawa
patent: 7459891 (2008-12-01), Al-Shyoukh et al.
patent: 2004/0027106 (2004-02-01), Martins
patent: 2007/0057649 (2007-03-01), Yang

Affiliated with

Also associated with

Rating

Soft-start circuit for power regulators does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Soft-start circuit for power regulators, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Soft-start circuit for power regulators will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4126780