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Calvin F Hsu, 29857 Nina Way, Fremont, CA 94539

Related to:
Yufen Chuang Hsu 52 Li F Chuang

Calvin Hsu Phones & Addresses

857 Nina Way, Fremont, CA 94539   

New York, NY   

Davis, CA   

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Calvin Hsu resumes & CV records

Resumes

Calvin Hsu Photo 28

Computer Scientist At Adobe Systems

Location:
San Francisco Bay Area
Industry:
Computer Software
Calvin Hsu Photo 29

Portfolio Manager

Location:
Elmhurst, NY
Industry:
Financial Services
Work:
Hsbc
Portfolio Manager Merrill Lynch Jun 2000 - May 2007
Analyst
Education:
Syracuse University - Martin J. Whitman School of Management 1996 - 2000
Bachelors, Bachelor of Science, Finance
Skills:
Wealth Management, Equities, Alternative Investments, Fixed Income, Series 7, Investments, Asset Allocation, Private Banking, Portfolio Management, Asset Management, Derivatives, Hedge Funds, Investment Advisory, Bloomberg, Capital Markets, Structured Products, Investment Strategies, Series 63, Mutual Funds, Wealth Management Services, Securities, Investment Management, Financial Markets
Calvin Hsu Photo 30

Calvin Hsu

Location:
Fremont, CA
Calvin Hsu Photo 31

Calvin Hsu

Calvin Hsu Photo 32

Calvin Hsu

Publications & IP owners

Us Patents

Universal Pulse Width Modulating Power Converter

US Patent:
6344980, Feb 5, 2002
Filed:
Nov 8, 1999
Appl. No.:
09/436074
Inventors:
Jeffrey Hwang - Saratoga CA
Calvin Hsu - San Mateo CA
Assignee:
Fairchild Semiconductor Corporation - South Portland ME
International Classification:
H02M 3335
US Classification:
363 2101, 363 2104
Abstract:
A controller for a pulse width modulating (PWM) power converter. The controller monitors an output voltage and a current through a magnetic element for modulating a duty cycle of a main power switch. The controller is an eight-pin integrated circuit which controls either a forward converter or a post regulator without internal modifications. The monitored current of the forward converter forms a positive sensing signal. The monitored current of the post regulator forms a negative sensing signal. A current sense circuit of the controller forms an absolute value of either sensing signal. A soft-start circuit of the controller forms a start-up voltage ramp which is proportional to the level of a V supply without requiring an external capacitor. A duty cycle of the main switch is gradually increased by comparing the start-up voltage ramp to the absolute value of the sensing signal. A pulse skipping circuit of the controller disables switching of the main switch under light load conditions.

Universal Pulse Width Modulating Power Converter

US Patent:
6469914, Oct 22, 2002
Filed:
Oct 4, 2001
Appl. No.:
09/971844
Inventors:
Jeffrey Hwang - Saratoga CA
Calvin Hsu - San Mateo CA
Assignee:
Fairchild Semiconductor Corporation - South Portland ME
International Classification:
H02M 3335
US Classification:
363 2101
Abstract:
A controller for a pulse width modulating (PWM) power converter. The controller monitors an output voltage and a current through a magnetic element for modulating a duty cycle of a main power switch. The controller is an eight-pin integrated circuit which controls either a forward converter or a post regulator without internal modifications. The monitored current of the forward converter forms a positive sensing signal. The monitored current of the post regulator forms a negative sensing signal. A current sense circuit of the controller forms an absolute value of either sensing signal. A soft-start circuit of the controller forms a start-up voltage ramp which is proportional to the level of a V supply without requiring an external capacitor. A duty cycle of the main switch is gradually increased by comparing the start-up voltage ramp to the absolute value of the sensing signal. A pulse skipping circuit of the controller disables switching of the main switch under light load conditions.

System And Method Of Adaptive Slope Compensation For Voltage Regulator With Constant On-Time Control

US Patent:
2012004, Mar 1, 2012
Filed:
Jan 11, 2011
Appl. No.:
13/004636
Inventors:
Calvin H. Hsu - San Jose CA, US
Weihong Qiu - San Jose CA, US
Ruchi J. Parikh - Mountain View CA, US
Jun Liu - Sunnyvale CA, US
Assignee:
INTERSIL AMERICAS INC. - Milpitas CA
International Classification:
G05F 1/575
US Classification:
323284
Abstract:
A system and method including providing an error voltage indicative of output voltage error, generating an off ramp voltage while a pulse control signal is turned off and otherwise resetting the off ramp voltage, developing the off ramp voltage to have a slope which is inversely proportional to an off time of the pulse control signal, comparing the off ramp voltage with the error voltage and turning on the pulse control signal when the off ramp voltage compares favorably with the error voltage, generating an on ramp voltage while a pulse control signal is turned on and otherwise resetting the on ramp voltage, developing the on ramp voltage with a slope that is proportional to the input voltage, and comparing the on ramp voltage with the reference voltage and turning off the pulse control signal when the on ramp voltage compares favorably with the reference voltage.

One Pin Error Amplifier And Switched Soft-Start For An Eight Pin Pfc-Pwm Combination Integrated Circuit Converter Controller

US Patent:
5798635, Aug 25, 1998
Filed:
Feb 6, 1997
Appl. No.:
8/796128
Inventors:
Jeffrey H. Hwang - Saratoga CA
Donald Yu - San Jose CA
Calvin Hsu - San Mateo CA
Alland Chee - Union City CA
Assignee:
Micro Linear Corporation - San Jose CA
International Classification:
G05F 1613
G05F 170
US Classification:
323222
Abstract:
A combination PFC-PWM integrated circuit converter controller having a power factor correction stage and a pulse-width modulation stage. The power factor correction stage provides unity power factor and a regulated intermediate output voltage by sensing a current in the power factor correction circuit and by sensing the regulated intermediate output voltage in a voltage control loop. The regulated intermediate output voltage is sensed by an error amplifier that includes a current mirror. A dc supply voltage for powering the integrated circuit is generated that is representative of the regulated intermediate output voltage. The dc supply voltage is sensed for an overvoltage protection function. By sensing the intermediate regulated output voltage in the voltage control loop and by sensing the dc supply voltage for overvoltage protection, a component failure is less likely to affect both functions than if a single voltage was sensed for both functions. The pulse-width modulation stage waits a predetermined delay time after start up for the output voltage to rise before beginning the pulse-width modulation function.

Possible Relatives

Cynthia Hsu  David Hsu  Deborah T Hsu  Dan I Hsu  Daniel J Hsu  Denise Hsu  Derek Hsu  Calvin L Johnson  Calvin J Standifer  Calvin B Johnston 

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