Circuit and method for a fully integrated switched-capacitor...

Electric power conversion systems – Current conversion – With voltage multiplication means

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C307S110000

Reexamination Certificate

active

07907429

ABSTRACT:
A circuit and method for providing a fully integrated DC-DC converter using on-chip switched capacitors is disclosed. A switched capacitor matrix is coupled as a digitally controlled transfer capacitor. A pair of non-overlapping, fixed frequency clock signals is provided to a switched capacitor circuit including the switched capacitor matrix and a load capacitor coupled to the output terminal. A DC input voltage supply is provided. A hysteretic feedback loop is used to control the voltage at the output as a stepped-down voltage from the input by digitally modulating the transfer capacitor using switches in the switch matrix to couple more, or fewer, transfer capacitors to the output terminal during a clock cycle. A coarse and a fine adjustment circuit are provided to improve the regulation during rapid changes in load power. A method of operating the regulator is disclosed.

REFERENCES:
patent: 6055168 (2000-04-01), Kotowski et al.
patent: 6657876 (2003-12-01), Satoh
patent: 6927441 (2005-08-01), Pappalardo et al.
patent: 6995995 (2006-02-01), Zeng et al.
patent: 7545658 (2009-06-01), Thiele et al.
Ramadass, Y. K., et al., “Voltage Scalable Switched Capacitor DC-DC Converter for Ultra-Low-Power On-Chip Applications,” IEEE Power Electronics Specialists Conference, pp. 2353-2359, Jun. 17-21, 2007, IEEE, Orlando, FL.
Cheong, S. V., et al., “Duty-Cycle Control Boosts DC-DC Converters,” IEEE Circuits and Devices Magazine, vol. 9, Issue 2, pp. 36-37, Mar. 1993, IEEE, Los Alamitos, CA.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Circuit and method for a fully integrated switched-capacitor... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Circuit and method for a fully integrated switched-capacitor..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circuit and method for a fully integrated switched-capacitor... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2696044

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.