High efficiency switching power supply

Details High efficiency switching power supply High efficiency switching power supply

2005-08-01

2008-10-07

Han, Jessica (Department: 2838)

Electricity: power supply or regulation systems

In shunt with source or load

Using choke and switch across source

C323S284000

Reexamination Certificate

active

07432687

ABSTRACT:
A high efficiency switching power supply including an analog front end, a battery control circuitry portion, a display and equalization circuitry portion, field effect transistor (FET) drivers, an isolated power supply transformer circuitry (and three associated sets of tap circuitry), microcontroller circuitry, oscillator circuitry, overcharge protection circuitry, programmable logic circuitry portion, and a zero current predictor. Overbiasing of the FET power supply switches, and/or other various circuitry features disclosed herein, helps achieve electrical power efficiencies of preferably greater than 95%, even more preferably greater than 98% and even more preferably greater than 99%. Preferably, the switching power supply has one or more of the following: (1) high electrical power efficiency (>95%. >98%, >99%); (2) overbiasing of a gate of a power supply switch; (3) a power supply switch with a low gate capacitance ratio; (4) multiple modes of operation; and (5) current prediction wherein an inductor voltage is used to control a constant current capacitor whose voltage indicates the level of current in the inductor.

REFERENCES:
patent: 4495554 (1985-01-01), Simi et al.
patent: 5734258 (1998-03-01), Esser
patent: 5982160 (1999-11-01), Walters et al.
patent: 6348784 (2002-02-01), Gofman et al.
patent: 6377032 (2002-04-01), Andruzzi et al.
patent: 2002/0017897 (2002-02-01), Wicox et al.
patent: 2002/0036486 (2002-03-01), Zhou et al.
patent: 2002/0047309 (2002-04-01), Droppo et al.
patent: 2002/0089313 (2002-07-01), Shashoua
patent: 2003/0214271 (2003-11-01), Bradley
patent: 2004/0100807 (2004-05-01), MacDonald et al.
patent: 2004/0119448 (2004-06-01), Wiegand et al.
patent: 2005/0194937 (2005-09-01), Jacobs
Linear Technology, “LTC3780 High Efficiency, Synchronous, 4-Switch Buck-Boost Controller”, Jan. 1, 2004, two pages, published at: linear.com website.

Affiliated with

Also associated with

Rating

High efficiency switching power supply does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with High efficiency switching power supply, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High efficiency switching power supply will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3993145