1
Alexander Mednik, David Chalmers Schie, James Hung Nguyen, Wei Gu: Switching power converter and method of controlling output voltage thereof using predictive sensing of magnetic flux. Supertex, A Mitchell Harris, Jeffrey D Moy, Weiss Moy & Harris P C, October 25, 2005: US06958920 (148 worldwide citation)

A switching power converter and method of controlling an output voltage thereof using predictive sensing of magnetic flux provides a low-cost switching power converter via primary-side control using a primary-side winding. An integrator generates a voltage that represents flux within a magnetic elem ...


2
Richard A Blanchard: MOS Power transistor with improved high-voltage capability. Supertex, Harry M Weiss, August 17, 1982: US04345265 (142 worldwide citation)

Device means for reducing latch-back breakdown thus raising the reverse-biased power capability of a DMOS transistor or the like. A DMOS transistor is an MOS field effect transistor comprising a lightly-doped (usually diffused) body region formed in a drain region; a heavily-doped source region is l ...


3
Henry C Pao, Richard A Blanchard, Benedict C K Choy: Combined DMOS and a vertical bipolar transistor device and fabrication method therefor. Supertex, Harry M Weiss, August 10, 1982: US04344081 (121 worldwide citation)

This disclosure relates to an improved DMOS semiconductor type device which can function both as a DMOS (unipolar) type device and as a bipolar transistor device. The DMOS device has two separated source regions of, for example, N+ conductivity and each of these source regions is surrounded by a P- ...


4
David Chalmers Schie, Alexander Mednik, James Hung Nguyen, Sang Ton Ngo, Khai Minh Le, Wei Gu, Larry Kerenyi: Optimal control of wide conversion ratio switching converters. Supertex, Jeffrey D Moy, A Mitchell Harris, Weiss Moy & Harris P C, September 6, 2005: US06940733 (118 worldwide citation)

A switch state controller generating a pulse train is used in a power converter utilizing a plurality of converter stages all simultaneously controlled by a single switch controlled by said pulse train. On time of the pulse train is controlled according to an input or interim node characteristic of ...


5
Alexander Mednik, David Chalmers Schie, Wei Gu: AC/DC cascaded power converters having high DC conversion ratio and improved AC line harmonics. Supertex, Andrew M Harris, Jeffrey D Moy, Weiss Moy & Harris PC, August 24, 2004: US06781351 (89 worldwide citation)

AC/DC cascaded power converters having high DC conversion ratio and improved AC line harmonics provide low input harmonic currents, high power factor and efficient operation for low voltage DC outputs when coupled directly to a source of unfiltered rectified AC voltage. The power converter incorpora ...


6
Richard A Blanchard, Benedict C K Choy: High power MOS device and fabrication method therefor. Supertex, Harry M Weiss, March 20, 1979: US04145703 (76 worldwide citation)

This disclosure relates to a high power VMOS semiconductor device and fabrication method therefor. This VMOS semiconductor device uses a doped polysilicon gate electrode in the V groove and an overlying metal electrode located over an insulation layer protecting the doped polysilicon gate electrode. ...


7
Alexander Mednik, Rohit Tirumala, Zhibo Tao: Transformer-isolated flyback converters and methods for regulating output current thereof. Supertex, Jeffrey D Moy, Weiss & May P C, July 14, 2009: US07561452 (47 worldwide citation)

A system and method for delivering regulated power and current to an output load has a flyback transformer having a primary winding and a secondary winding. The secondary winding delivers stored energy to the output load. An oscillator circuit is provided for generating a periodical signal. A switch ...


8
Jimes Lei: Device for converting high voltage alternating current to low voltage direct current. Supertex, Paul W Davis, Harry M Weiss & Associates P C, January 2, 2001: US06169391 (40 worldwide citation)

A device which rectifies and regulates high voltage alternating current without the use of transformers, large capacitive coupling circuits or high voltage linear regulators. The device includes a rectifier, a control circuit for sensing the output voltage of the rectifier and switching on and off t ...


9
Richard A Blanchard: Composite MOS/bipolar power device. Supertex, Harry M Weiss, August 30, 1983: US04402003 (40 worldwide citation)

A merged MOS/bipolar structure for high current device applications. Using the same process sequence both an MOS device as a bipolar device are formed in a single semiconductor substrate. Integral input circuitry means couples the input terminals of the individual devices to the composite input term ...


10
Richard A Blanchard: Power MOS transistor with a plurality of longitudinal grooves to increase channel conducting area. Supertex, Harry M Weiss, July 12, 1983: US04393391 (34 worldwide citation)

A semiconductor device providing improved utilization of semiconductor surface area by enhancing the current carrying capability per unit area. The improvement arises from contouring the surface in the conductive channel region of the device so that the current carrying channel is wider than the pla ...