Search

Keng Chen

from McKinney, TX
Age ~40
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Also known as:
Ken G Chen, Keng Chan, Chen Keng
Related to:
Larissa Hoerning Chen, 48Maria Lourdes Quinn, 50Scott W Wu, 58Hao Chen, 44
Connected to:
Aiyu Chen, 33Allen C Chen, 73Aluna F Chen, 58Anna D Chen, 67Annamaria E Chen, 38Annice B Chen, 31Anthony Chen, 60Ava H Chen, 42Baofeng Chen, 40Barbara K Chen, 45

Keng Chen Phones & Addresses

  • McKinney, TX
  • 257 Hudson Rd, Sudbury, MA 01776 (978) 289-3325
  • 539 Acorn Park Dr, Acton, MA 01720
  • 35 Royal Crest Dr, North Andover, MA 01845
  • Levittown, NY
  • Troy, NY
  • Forest Hills, NY
  • Wayland, MA

Resumes

Resumes

Keng Chen Photo 1

Staff Engineer At Infineon Technologies

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Location:
18275 Serene Dr, Morgan Hill, CA 95037
Industry:
Electrical/Electronic Manufacturing
Work:
Osram Sylvania Sep 2013 - Jan 2016
Senior Power Electrical Engineer Ii
Infineon Technologies Sep 2013 - Jan 2016
Staff Engineer at Infineon Technologies
Osram Sylvania Apr 2010 - Sep 2013
Senior Power Electrical Engineer
Wac Lighting Jan 2009 - Apr 2010
Electrical Engineer
Education:
Columbia University In the City of New York 2008 - 2011
Master of Science, Masters, Electrical Engineering Rensselaer Polytechnic Institute 2006 - 2008
Master of Science, Masters Fudan University 2002 - 2006
Bachelors, Bachelor of Science, Engineering
Skills:
Electrical Engineering
Power Electronics
Electronics
Semiconductors
Rf
Solid State Lighting
Analog Circuit Design
Power Supplies
Simulations
Integrated Circuit Design
Pcb Design
Circuit Design
Embedded Systems
Hardware Architecture
Fpga
Microcontrollers
Pspice
Analog
Labview
Engineering Management
Power Management
Sensors
Mixed Signal
Radio Frequency
Orcad
Cmos
Keng Chen Photo 2

Keng Chen

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Keng Chen Photo 3

Keng Chen

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Work:
Signature Home Furnishings Company
Vice President
Keng Chen Photo 4

Keng Chen

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Location:
United States

Publications

Us Patents

Multiple Channel Light Source Power Supply With Output Protection

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US Patent:
8587203, Nov 19, 2013
Filed:
Apr 17, 2012
Appl. No.:
13/448890
Inventors:
Keng Chen - North Andover MA, US
Christian Breuer - Newburyport MA, US
Peng Xiao - Quincy MA, US
Assignee:
OSRAM SYLVANIA Inc. - Danvers MA
International Classification:
H05B 37/00
US Classification:
315121, 315123, 315295, 315307
Abstract:
Multiple output channel light source power supply circuits, and methods for protecting, are provided. A front end circuit receives an input voltage and provides a regulated front end DC voltage (FEDC). Voltage converter circuits (VCCs) receive the FEDC and provide a separate associated DC output for each associated output channel. A protection switch is coupled between. In its conducting state, the FEDC is coupled to the VCCs. In its non-conducting state, the FEDC is decoupled. A current sense circuit of a current sensor in parallel with a bypass switch is coupled to the VCCs to provide a current sense output representing current through at least one VCC. A controller circuit places the protection switch in the non-conducting state in response to the current sense output. The bypass switch may be placed in a conducting state to shunt current around the current sensor during normal operation to reduce or eliminate inefficiency.

Multiple Channel Light Source Power Supply With Output Protection

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US Patent:
20120313528, Dec 13, 2012
Filed:
Feb 24, 2012
Appl. No.:
13/404415
Inventors:
Keng Chen - North Andover MA, US
Christian Breuer - Newburyport MA, US
Peng Xiao - Quincy MA, US
Assignee:
OSRAM SYLVANIA INC. - Danvers MA
International Classification:
H05B 37/03
US Classification:
315121
Abstract:
Multiple output channel light source power supply circuits, and methods for protecting the output channels, are provided. A front end circuit receivess an input voltage and provides a regulated front end DC voltage. A plurality of voltage converter circuits are each configured to receive the regulated front end DC voltage and provide a separate associated DC output for an associated one of the multiple output channels. A protection switch is coupled therebetween, and includes a conducting state, to couple the front end DC voltage to the plurality of voltage converter circuits, and a non-conducting state, to decouple the front end DC voltage. A current sense circuit is coupled to the voltage converter circuits, and provides a current sense output representative of current through at least one voltage converter circuit. A controller circuit places the protection switch in the non-conducting state in response to the current sense output.

Power Supply With Restart Circuit

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US Patent:
20120314463, Dec 13, 2012
Filed:
Jun 7, 2012
Appl. No.:
13/491060
Inventors:
Keng Chen - North Andover MA, US
Assignee:
OSRAM SYLVANIA INC. - Danvers MA
International Classification:
H02H 7/12
US Classification:
363 50
Abstract:
A power supply protected against open circuit conditions at its output terminals, and methods for so protecting, are disclosed. A front end circuit receives an input voltage and provides a regulated front end DC voltage to a voltage converter circuit, which in turn provides a DC output voltage to the output terminals to drive a light source. An open circuit protection circuit is coupled between the voltage converter circuit and the output terminals. It has a non-conducting state to couple the DC output voltage to the output terminals, and a conducting state to establish a short circuit across the output terminals in response to charging of a capacitor during an open circuit condition at the output terminals. A restart circuit intermittently discharges the capacitor during the open circuit condition to place the open circuit protection circuit in the non-conducting state when the open circuit condition is resolved.

Multichannel Power Supply

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US Patent:
20130049462, Feb 28, 2013
Filed:
Aug 24, 2012
Appl. No.:
13/594739
Inventors:
Keng Chen - North Andover MA, US
Christian Breuer - Newburyport MA, US
Canyon Bliss - Revere MA, US
Assignee:
OSRAM SYLVANIA INC. - Danvers MA
International Classification:
H02J 4/00
US Classification:
307 18
Abstract:
Systems and methods for a multichannel power supply are disclosed. The multichannel power supply includes a front end circuit configured to receive an input voltage and to provide a regulated front end direct current (DC) voltage. A multichannel source circuit is coupled to the front-end circuit. The multichannel source circuit includes a controller, a reference voltage circuit, and a plurality of source circuits. Each source circuit in the plurality of source circuits represents a distinct output channel of the multichannel power supply. The multichannel source circuit is configured to generate a constant current output for each source circuit in the plurality of source circuits. Each load in a plurality of loads is connected to a corresponding source circuit in the plurality of source circuits and is configured to receive the corresponding constant current output via the corresponding source circuit.

Reference Voltage Control In A Power Supply

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US Patent:
20200021193, Jan 16, 2020
Filed:
Sep 24, 2019
Appl. No.:
16/580558
Inventors:
- Villach, AT
Keng Chen - Sudbury MA, US
Paul Sisson - Exeter RI, US
International Classification:
H02M 3/158
H02M 1/08
Abstract:
A power supply includes a power converter, a reference voltage generator, and a controller. During operation, the power converter produces an output voltage to power a load. The reference voltage generator (such as a voltage mode amplifier circuit) generates a floor reference voltage, a magnitude of which varies as a function of the output voltage. The controller compares an output voltage feedback signal (derived from the output voltage) to the floor reference voltage to produce control output to control timing of activating switches in the power converter to maintain the output voltage within a desired voltage range.

Reference Voltage Control In A Power Supply

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US Patent:
20190271998, Sep 5, 2019
Filed:
Mar 1, 2018
Appl. No.:
15/909323
Inventors:
- Villach, AT
Keng Chen - Sudbury MA, US
International Classification:
G05F 1/46
G05F 1/575
H04N 3/185
H02M 3/156
H02M 3/335
Abstract:
A power supply includes a power converter, a reference voltage generator, and a controller. During operation, the power converter produces an output voltage to power a load. The reference voltage generator (such as a voltage mode amplifier circuit) generates a floor reference voltage, a magnitude of which varies as a function of the output voltage error. The controller compares an output voltage feedback signal (derived from the output voltage) to the floor reference voltage to produce control output to control timing of activating switches in the power converter to maintain the output voltage within a desired voltage range.

Reference Voltage Control In A Power Supply

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US Patent:
20190273435, Sep 5, 2019
Filed:
Mar 1, 2018
Appl. No.:
15/909382
Inventors:
- Villach, AT
Keng Chen - Sudbury MA, US
Paul Sisson - Exeter RI, US
International Classification:
H02M 3/158
H02M 1/08
Abstract:
A power supply includes a power converter, a reference voltage generator, and a controller. During operation, the power converter produces an output voltage to power a load. The reference voltage generator (such as a voltage mode amplifier circuit) generates a floor reference voltage, a magnitude of which varies as a function of the output voltage. The controller compares an output voltage feedback signal (derived from the output voltage) to the floor reference voltage to produce control output to control timing of activating switches in the power converter to maintain the output voltage within a desired voltage range.

Power Supply Control And Use Of Generated Ramp Signal

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US Patent:
20190103811, Apr 4, 2019
Filed:
Dec 3, 2018
Appl. No.:
16/207477
Inventors:
- Villach OT 9500, AT
Kang Peng - East Greenwich CT, US
Keng Chen - Sudbury MA, US
Mark A. Crowther - Warwick RI, US
International Classification:
H02M 3/156
H03K 4/08
Abstract:
A power supply includes a reference voltage generator circuit, a ramp generator circuit, and control circuitry. During operation, the reference voltage generator circuit compares a magnitude of a received output voltage feedback signal to a received reference voltage. Based on the comparison, the reference voltage generator circuit produces a varying reference voltage and outputs it to the ramp generator circuit. As its name suggests, a magnitude of the varying reference voltage varies over time. The ramp generator circuit produces a ramp voltage signal, a magnitude of which is offset by the varying reference voltage. To maintain an output voltage of the power supply within regulation, the control circuitry receives the varying reference voltage and controls activation of a power converter circuit to power a load based on a comparison of the ramp voltage signal and the output voltage feedback signal of the power supply.
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Keng Chen from McKinney, TX, age ~40 Get Report