1
Jeffrey J Boylan, Mark E Jacobs, Allen F Rozman: System and method for determining output current and converter employing the same. Tyco Electronics Logistics, June 19, 2001: US06249447 (111 worldwide citation)

A system and method for determining an output current of a power converter having an output capacitor and a component coupled thereto. In one embodiment, the system includes (1) an observer circuit, parallel-coupled to the output capacitor, that senses a voltage across the output capacitor and devel ...


2
Jin He, Mark E Jacobs: Controller for power supply and method of operation thereof. Lucent Technologies, March 13, 2001: US06201719 (91 worldwide citation)

A controller for a full bridge power converter having controllable switches, a method of operating the controller and a power supply employing the controller or the method. In one embodiment, the controller includes (1) a signal generator circuit designed to drive the controllable switches in a phas ...


3
Mark E Jacobs, Subarna Pal, John F Steel: Gate driver with a DC offset bias circuit and a power converter employing the same. Tyco Electronics Power Systems, November 23, 2004: US06822882 (50 worldwide citation)

A gate driver and a method of driving a switch for use with a power converter having a main active clamp circuit associated with a main power switch coupled to a primary winding of a transformer and a rectifier switch coupled to a secondary winding of the transformer. The main power switch conducts ...


4
Mark E Jacobs, Allen F Rozman: Drive compensation circuit for synchronous rectifier and method of operating the same. September 11, 2001: US06288920 (49 worldwide citation)

For use with a synchronous rectifier coupled to a secondary winding of a transformer and having a rectifier switch, a circuit for, and method of driving the rectifier switch and a power converter employing the circuit or the method. In one aspect of the present invention wherein the synchronous rect ...


5
Mark E Jacobs: Optimal feedback control of switch-mode power converters. December 2, 2008: US07459893 (49 worldwide citation)

A power converter including a power switch, an output filter, and a controller. The output filter receives a switched input voltage and produces a filtered power converter output characteristic represented by a state vector. A controller coupled to the power switch and the output filter estimates th ...


6
Richard Farrington, Mark E Jacobs, Rui Liu, Vijayan J Thottuvelil: Asymmetrical half-bridge power converter having reduced input ripple and method of manufacturing the same. Lucent Technologies, February 13, 2001: US06188586 (49 worldwide citation)

An asymmetrical half-bridge power converter and a method of manufacturing the same. In one embodiment, the asymmetrical half-bridge power converter includes: (1) first and second power switches configured to be controlled by complementary drive signals having nominal first and second duty cycles of ...


7
Mark E Jacobs, Subarna Pal, John F Steel: Auxiliary active clamp circuit, a method of clamping a voltage of a rectifier switch and a power converter employing the circuit or method. Tyco Electronics Power Systems, April 19, 2005: US06882548 (46 worldwide citation)

The present invention is directed to an auxiliary active clamp circuit and a method of clamping a voltage of a rectifier switch associated with a power converter. The power converter includes a main active clamp circuit associated with a main power switch coupled to a primary winding of a transforme ...


8
Mark E Jacobs, Vijayan J Thottuvelil, Kenneth J Timm: Apparatus and method for generting negative bias for isolated MOSFET gate-drive circuits. AT&T, Alfred G Steinmetz, January 2, 1996: US05481219 (36 worldwide citation)

An isolated MOSFET gate drive includes circuitry to provide a negative gate bias during the off time of the MOSFET to enhance its immunity to inadvertent turn-on. The bias is generated by a self contained two terminal passive network which may be "floated" at any potential with respect to ground. Th ...


9
Richard W Farrington, William P Gardiner, Mark E Jacobs, Hengchun Mao: Current mode controller for continuous conduction mode power factor correction circuit and method of operation thereof. Lucent Technologies, June 15, 1999: US05912549 (29 worldwide citation)

For use with a power factor correction circuit, a current mode controller, a method of operating current mode control to achieve power factor correction thereof and a power supply incorporating the controller or the method. In one embodiment, the controller includes: (1) a modulator, coupled to a sw ...


10
Jin He, Mark E Jacobs: Current-sharing circuit for parallel-coupled switches and switch-mode power converter employing the same. Lucent Technologies, June 1, 1999: US05909108 (26 worldwide citation)

For use in a switch-mode power converter including parallel-coupled first and second switches, the first switch having a temperature-dependent resistance, a circuit for, and method of, distributing current between the first and second switches. In one embodiment, the circuit includes a device having ...