Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Phase shift by less than period of input
Patent
1995-06-06
1997-01-07
Callahan, Timothy P.
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Phase shift by less than period of input
327530, 327536, 327258, 327259, 327295, 327291, 327306, H03K 300
Patent
active
055921159
ABSTRACT:
The invention relates to charge-pump circuits used for the generation, in an integrated circuit, of an internal supply voltage Vpp which is considerably greater than the external supply voltage Vcc. In a charge pump configuration with capacitors and transistors, certain transistors must be driven by bootstrapped logic signals, i.e., having a logic level which is greater than Vcc in order to overcome the threshold voltage of the transistors. According to the invention, there is an oscillator followed by a phase splitter stage which is in turn followed by a bootstrap amplifier stage. The oscillator is a ring oscillator having a number of logic gates which is as small as possible, preferably only three. A satisfactory frequency stability of the charge pump is thus obtained and therefore its design is made easier and its adaptability to various electronic circuits is improved.
REFERENCES:
patent: 4409496 (1983-10-01), Baba
patent: 4827157 (1989-05-01), Machida et al.
patent: 5041739 (1991-08-01), Goto
patent: 5072134 (1991-12-01), Min
patent: 5097226 (1992-03-01), Pascucci et al.
patent: 5202588 (1993-04-01), Matsmo et al.
patent: 5394372 (1995-02-01), Tanaka et al.
Callahan Timothy P.
Dorny Brett N.
Driscoll David M.
Le Dinh T.
Morris James H.
LandOfFree
Voltage booster circuit of the charge-pump type with a bootstrap does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Voltage booster circuit of the charge-pump type with a bootstrap, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Voltage booster circuit of the charge-pump type with a bootstrap will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1767624