Boost converter with series switch

Details Boost converter with series switch Boost converter with series switch

2006-08-29

2006-08-29

Riley, Shawn (Department: 2838)

Electricity: power supply or regulation systems

In shunt with source or load

Using choke and switch across source

C323S224000, C323S266000

Reexamination Certificate

active

07098633

ABSTRACT:
A switching voltage converter, suitably a boost converter, employs an n-type transistor, preferably an NMOS FET, as a series switch, with its drain coupled to the cathode of the converter's diode and its source coupled to the converter's output node. A charge pump driven by the converter's switching voltage provides a voltage Vonat the NMOS FET's gate input sufficient to turn the FET on. A series switch controller is arranged to, in response to a control signal, hold the NMOS FET off such that the converter's output voltage Voutis approximately zero regardless of the status of input voltage Vin, or allow the NMOS device to be turned on by Von.

REFERENCES:
patent: 5216351 (1993-06-01), Shimoda
patent: 5592072 (1997-01-01), Brown
patent: 6850044 (2005-02-01), Hansen et al.
patent: 6862201 (2005-03-01), Hodge, Jr.

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