Switching controller having switching frequency hopping for...

Details Switching controller having switching frequency hopping for... Switching controller having switching frequency hopping for...

2011-03-08

2011-03-08

Nguyen, Matthew V (Department: 2838)

Electric power conversion systems

Current conversion

Including d.c.-a.c.-d.c. converter

C363S021180

Reexamination Certificate

active

07903435

ABSTRACT:
A switching controller having switching frequency hopping for a power converter includes a first oscillator generating a pulse signal and a maximum duty-cycle signal for determining a switching frequency of a switching signal, a pattern generator having a second oscillator and generating a digital pattern code in response to a clock signal, a programmable capacitor coupled to the pattern generator and the first oscillator for modulating the switching frequency of the switching signal in response to the digital pattern code, and a PWM circuit coupled to the first oscillator for generating the switching signal in accordance with the maximum duty-cycle signal. A maximum on-time of the switching signal is limited by the maximum duty-cycle signal. The switching signal is utilized to switch a transformer of the power converter.

REFERENCES:
patent: 7239119 (2007-07-01), Baurle et al.
patent: 7446517 (2008-11-01), Chen et al.
patent: 2010/0007394 (2010-01-01), Hsueh et al.
Authored by Rahkala et al., article titled “Effects of Switching Frequency Modulation on EMI Performance of a Converter Using Spread Spectrum Approach”, APEC 2002 (Applied Power Electronics Conference and Exposition, 2002), 2002 IEEE, pp. 93-99.

Affiliated with

Also associated with

Rating

Switching controller having switching frequency hopping for... 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 controller having switching frequency hopping for..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Switching controller having switching frequency hopping for... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2709296