WEI TANG
Pharmacy in Plano, TX
License number
Michigan 5315047268
Issued Date
Jul 27, 2010
Expiration Date
Jan 31, 2011
Category
Pharmacy
Type
CS - 3
Address
Address
Plano, TX 75025
Professional information
Integrated Circuit Including A Driver For A Metal-Semiconductor Field-Effect Transistor
US Patent:
6218891, Apr 17, 2001
Filed:
Jul 28, 2000
Appl. No.:
9/628266
Inventors:
Ashraf W. Lotfi - Bridgewater NJ
Allen F. Rozman - Richardson TX
Jian Tan - Bridgewater NJ
Wei Tang - Plano TX
Allen F. Rozman - Richardson TX
Jian Tan - Bridgewater NJ
Wei Tang - Plano TX
Assignee:
Lucent Technologies Inc. - Murray Hill NJ
International Classification:
H03K 17687
US Classification:
327431
Abstract:
An integrated circuit including a metal-semiconductor field-effect transistor (MESFET) having a nominal intrinsic capacitance and requiring a negative voltage to bias the MESFET into a non-conduction state, a method of driving the MESFET and a power converter employing the integrated circuit and method. In one embodiment, the integrated circuit includes a driver including a bias capacitor integrated with the MESFET. The driver is configured to apply a positive voltage to bias the MESFET into a conduction state, and apply the negative voltage to bias the MESFET into the non-conduction state without employing an external negative bias source.
Secondary Side Post Regulator And Multiple Output Power Supply Employing The Same
US Patent:
5986911, Nov 16, 1999
Filed:
Feb 25, 1998
Appl. No.:
9/030313
Inventors:
Wei Tang - Plano TX
Assignee:
Lucent Technologies, Inc. - Murray Hill NJ
International Classification:
H02M 7155, H02M 3335
US Classification:
363 89
Abstract:
For use with a multiple output power converter, a secondary side post regulator (SSPR), a method of secondary side post regulating a multiple output power converter and a multiple output multiple output power converter employing the SSPR or the method. In one embodiment, the SSPR includes: (1) an average input current sensing circuit that senses a current flowing through a switch to be controlled in the multiple output power converter and develops therefrom an intermediate signal that is a function of an average of the current and (2) an input voltage feedforward circuit, coupled between an input of the multiple output power converter and the average input current sensing circuit, that adjusts the intermediate signal based on an input voltage of the multiple output power converter to develop a control signal that is a function of both the input voltage and the average of the current thereby to allow trailing edge control to be employed to control an output of said multiple output power converter.