Power supply unit

Details Power supply unit Power supply unit

2011-07-26

2011-07-26

Riley, Shawn (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

C323S272000

Reexamination Certificate

active

07986133

ABSTRACT:
To provide a power supply unit capable of realizing a multiphase power supply at low cost. For example, each of a plurality of semiconductor devices DEV[1]-DEV[n] comprises a trigger input terminal TRG_IN, a trigger output terminal TRG_OUT, and a timer circuit TM that delays a pulse signal input from TRG_IN and outputs it to TRG_OUT. DEV[1]-DEV[n] are mutually coupled in a ring shape by its own TRG_IN being coupled to TRG_OUT of one semiconductor device other than itself. Each of DEV[1]-DEV[n] performs switching operation by using the pulse signal from TRG_IN as a starting point, and feeds a current into an inductor L corresponding to itself. Moreover, DEV[1] generates the above-described pulse signal only once during startup by a start trigger terminal ST being set to a ground voltage GND, for example.

REFERENCES:
patent: 5262932 (1993-11-01), Stanley et al.
patent: 6806689 (2004-10-01), Schuellein et al.
patent: 6841977 (2005-01-01), Huang et al.
patent: 2007/0064456 (2007-03-01), Schuellein et al.
patent: 2005-520475 (2005-07-01), None
patent: 2007-135390 (2007-05-01), None
patent: 2008-017620 (2008-01-01), None

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