Charge pump for use with a synchronous load

Details Charge pump for use with a synchronous load Charge pump for use with a synchronous load

2009-11-16

2011-10-18

Riley, Shawn (Department: 2838)

Electric power conversion systems

Current conversion

With voltage multiplication means

Reexamination Certificate

active

08040700

ABSTRACT:
A charge pump has circuitry and implements a method for monitoring a synchronous load by using a first voltage threshold below a target output voltage and a second voltage threshold above a target output voltage. An output terminal is coupled to the load. Charge is demanded by clocking the load. When the target output voltage passes below the first voltage threshold, a first value representing a present size of a charging capacitance is stored as a stored first value, and a second stored value representing a needed changed size of the charging capacitance is used. The present size of the charging capacitance is changed in response to the passing of the target output voltage below the first voltage threshold. When demand for charge from the load is reduced, a present value is saved and a prior value is restored to change the size of the charging capacitance.

REFERENCES:
patent: 4451743 (1984-05-01), Suzuki et al.
patent: 5959854 (1999-09-01), Okada
patent: 5999040 (1999-12-01), Do et al.
patent: 6091613 (2000-07-01), Yang et al.
patent: 6169673 (2001-01-01), McIntyre et al.
patent: 6249445 (2001-06-01), Sugasawa
patent: 6429723 (2002-08-01), Hastings
patent: 6504422 (2003-01-01), Radar et al.
patent: 6784723 (2004-08-01), Lee et al.
patent: 6831500 (2004-12-01), Sato et al.
patent: 6834001 (2004-12-01), Myono
patent: 6859091 (2005-02-01), Nicholson et al.
patent: 6934187 (2005-08-01), Cheung
patent: 7009857 (2006-03-01), Chen et al.
patent: 7173478 (2007-02-01), Chun
patent: 7236046 (2007-06-01), Georgescu et al.
patent: 7262996 (2007-08-01), Cheung
patent: 7348829 (2008-03-01), Choy et al.
patent: 7518892 (2009-04-01), Kitagawa et al.
patent: 7558129 (2009-07-01), Thorp et al.
patent: 7667530 (2010-02-01), Chu et al.
patent: 7683700 (2010-03-01), Huynh et al.
patent: 7702061 (2010-04-01), Shao et al.
patent: 7755584 (2010-07-01), Senda et al.
patent: 7919998 (2011-04-01), Stanley
patent: 2007/0052471 (2007-03-01), Ng
patent: 2007/0252791 (2007-11-01), Oomori
patent: 2007/0279950 (2007-12-01), Sugiyama et al.
patent: 2008/0084239 (2008-04-01), Oswald et al.
patent: 2008/0191786 (2008-08-01), Kwon et al.
patent: 2009/0097285 (2009-04-01), Cook et al.
patent: 2009/0231022 (2009-09-01), Kim et al.
patent: 2010/0013445 (2010-01-01), Martinussen
patent: 2010/0052771 (2010-03-01), Hartono
Office Action mailed Dec. 10, 2010 in U.S. Appl. No. 12/633,584.
U.S. Appl. No. 12/633,584, filed Dec. 8, 2009.
U.S. Appl. No. 12/549,499, filed Aug. 28, 2009.
Notice of Allowance mailed Oct. 1, 2010 in U.S. Appl. No. 12/549,499.

Affiliated with

Also associated with

Rating

Charge pump for use with a synchronous load does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Charge pump for use with a synchronous load, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Charge pump for use with a synchronous load will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4290587