High voltage generator using inductor-based charge pump for...

Electricity: power supply or regulation systems – In shunt with source or load – Using choke and switch across source

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C323S225000, C323S282000

Reexamination Certificate

active

07129678

ABSTRACT:
A low cost, board level, inductor-based charge pump is provided to generate a sufficiently high voltage to drive a power MOSFET307having a rotor coil311attached on its source side in an automotive alternator voltage regulator. A first BJT transistor303of the charge pump receives a clock signal at its base from an application specific integrated circuit (ASIC)302. The clock signal continuously turns transistor303on and off, forcing a current to flow through an inductor301connected to a voltage supply terminal. A second BJT transistor308receives a gate control signal at its base from the ASIC302for turning the second transistor308on and off to enable the circuit. In operation when the first transistor303is turned off, a slowly decreasing current flows from the inductor301to an output node. With the base of the second transistor308low to enable the system, the second transistor308is turned off and the current flows from the output node through a capacitor309to ground. The current charges the capacitor309to a higher voltage level than the alternator system voltage Vcc. The voltage across the capacitor309is sufficiently high to drive the power MOSFET307in an automotive alternator voltage regulator.

REFERENCES:
patent: 4461989 (1984-07-01), Dotson et al.
patent: 4636705 (1987-01-01), Bowman
patent: 4733159 (1988-03-01), Edwards et al.
patent: 5023474 (1991-06-01), Wilcox
patent: 5155670 (1992-10-01), Brian
patent: 5381044 (1995-01-01), Zisa et al.
patent: 5399913 (1995-03-01), Widener et al.
patent: 5426334 (1995-06-01), Skovmand
patent: 5483436 (1996-01-01), Brown et al.
patent: 5627460 (1997-05-01), Bazinet et al.
patent: 5723973 (1998-03-01), Umeda et al.
patent: 5748428 (1998-05-01), Kelley et al.
patent: 5825218 (1998-10-01), Colli et al.
patent: 5936440 (1999-08-01), Asada et al.
patent: 5939927 (1999-08-01), Myers
patent: 5969964 (1999-10-01), Mangtani
patent: 5973482 (1999-10-01), Meinert
patent: 6054738 (2000-04-01), Sander et al.
patent: 6275018 (2001-08-01), Telefus et al.
patent: 6424208 (2002-07-01), Pinai
patent: 6445623 (2002-09-01), Zhang et al.
patent: 0 973 250 (2000-01-01), None
Warren Schultz, Drive Techniques For High Side N-Channel MOSFETS, AR194, Jun. 1998, Motorola Semiconductor Products Inc. Phoenix, AZ.
In-Rush Current Limit MOSFET Driver, Si9750 Vishay Siliconix, VISHAY, S-60752-Rev. C, Apr. 5, 1999, FaxBack 408-970-5600, request 70028, www.siliconix.com.

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

High voltage generator using inductor-based charge pump 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 High voltage generator using inductor-based charge pump for..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High voltage generator using inductor-based charge pump for... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3718078

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