Electricity: power supply or regulation systems – In shunt with source or load – Using choke and switch across source
Patent
1998-12-30
2000-07-18
Riley, Shawn
Electricity: power supply or regulation systems
In shunt with source or load
Using choke and switch across source
323224, 323284, G05F 110
Patent
active
060912324
ABSTRACT:
A DC/DC conversion circuit, adapted to convert a DC input voltage to a DC output voltage, employs a PNP type of bipolar power transistor as a synchronous rectifier element, to allow power-on through a simplified control circuitry capable of sensing, automatically and at a high speed, the difference of potential across the switch. This approach allows power to be transferred from the input to the output unilaterally, while automatically controlling the depth of saturation of the power transistor and regulating its base current.
REFERENCES:
patent: 4549254 (1985-10-01), Kissel
patent: 4672303 (1987-06-01), Newton
patent: 5574357 (1996-11-01), Otake et al.
McClure et al., "Constant Input Power Modulation Technique for High Efficiency Boost Converter Optimized for Lithium-Ion Battery Applications," APEC'96, Eleventh Annual Applied Power Electronics Conference and Exposition, vol. 2, Conf. 11, San Jose, CA, Mar. 1996, pp. 850-855.
"High Efficiency Boost Converter with Synchronous Clock," IBM Technical Disclosure Bulletin, 38(2):223-224, 1995.
Criscione Marcello
Occhipinti Luigi
Galanthay Theodore E.
Iannucci Robert
Riley Shawn
STMicroelectronics S.r.l.
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