Switching power supply unit and controller IC thereof

Details Switching power supply unit and controller IC thereof Switching power supply unit and controller IC thereof

2005-10-11

2005-10-11

Han, Jessica (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

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

C323S288000, C323S901000

Reexamination Certificate

active

06954056

ABSTRACT:
A low-voltage operating block and a high-voltage operating block are controlled at the same soft start voltage as that employed at the time of start-up. At a point in time at which an output DC voltage has reached an expected value, a control signal of the low-voltage operating block is switched to a control signal of the high-voltage operating block. As a result, switching is smoothly performed without involvement of occurrence of a variation in the output voltage before and after switching operation. In a switching power supply unit having a low-voltage operating block and a high-voltage operating block, which are intended for producing a higher DC voltage from a low power supply voltage, it prevents occurrence of a rush current and a start-up failure, which would otherwise be caused by switching operation.

REFERENCES:
patent: 6512353 (2003-01-01), Sanzo et al.
patent: 6624619 (2003-09-01), Fujita et al.
patent: 8-186980 (1986-07-01), None
patent: 1-295665 (1989-11-01), None
patent: 11-75365 (1999-03-01), None
patent: 2001-251849 (2001-09-01), None

Affiliated with

Also associated with

Rating

Switching power supply unit and controller IC thereof 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 power supply unit and controller IC thereof, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Switching power supply unit and controller IC thereof will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3447985