Electric power conversion systems – Current conversion – With voltage multiplication means
Patent
1998-12-18
2000-02-15
Wong, Peter S.
Electric power conversion systems
Current conversion
With voltage multiplication means
307110, 327536, H02M 318, G05F 110, G05F 302
Patent
active
060260033
ABSTRACT:
A charge pump (102) and method of charge pumping a low voltage (V.sub.DD)) to generate a higher voltage (V.sub.PP). A primary pump (160, 179, 180) receives complementary clock signals (CLK1, CLK2) that control charging and transfer cycles of the charge pump. During the charging cycle, a capacitor (150) stores a charge developed from the low voltage. On the transfer cycle, the charge is transferred to an output (138, 177, 178) through a switching transistor (152) disposed in a well region (202) to develop the higher voltage. A secondary pump (162, 187, 188) charge pumps the output voltage to generate a more positive bias voltage for biasing the well region to disable a parasitic PNP transistor of the switching transistor.
REFERENCES:
patent: 4559548 (1985-12-01), Iizuka et al.
patent: 5394365 (1995-02-01), Tsukikawa
patent: 5625544 (1997-04-01), Kowshik et al.
patent: 5633825 (1997-05-01), Sakuta et al.
patent: 5790393 (1998-08-01), Fotouhi
patent: 5801934 (1998-09-01), Lacey et al.
patent: 5828095 (1998-10-01), Merritt
K. Sawada et al., "An On-Chip High-Voltage Generator Circuit for EEPROMs with a Power Supply Voltage below 2V", 1995 Symposium on VLSI Circuits Digest Technical Papers, pp. 75-76.
P. Favrat et al., "An Improved Voltage Doubler in a Standard CMOS Technology", 1997 IEEE International Symposium on Circuits and Systems, Jun. 9-12, 1997, Hong Kong, pp. 249-252.
Bushey Thomas P.
Caravella James S.
Moore Jeremy W.
Hightower Robert F.
Martinez Anthony M.
Motorola Inc.
Vu Bao Q.
Wong Peter S.
LandOfFree
Charge pump circuit and method for generating a bias voltage 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 circuit and method for generating a bias voltage, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Charge pump circuit and method for generating a bias voltage will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1911004