Electricity: power supply or regulation systems – Output level responsive – Using a three or more terminal semiconductive device as the...
Reexamination Certificate
2005-07-26
2005-07-26
Vu, Bao Q. (Department: 2838)
Electricity: power supply or regulation systems
Output level responsive
Using a three or more terminal semiconductive device as the...
C323S284000, C323S285000
Reexamination Certificate
active
06922041
ABSTRACT:
A switching regulator target voltage is adjusted to a first value corresponding to a pre-charge voltage that is present at a regulator output terminal. The switching regulator responds to a comparison signal resulting from a comparison of the target voltage and a feedback voltage. When the switching regulator is on, the target voltage is adjusted to a second value corresponding to a nominal regulator output voltage. In one embodiment, a synchronous switch is disabled when a lockout circuit receives a disable signal. The lockout circuit is unlocked when an enable signal is provided by a switching controller.
REFERENCES:
patent: 5375029 (1994-12-01), Fukunaga et al.
patent: 6225795 (2001-05-01), Stratakos et al.
patent: 6348780 (2002-02-01), Grant
patent: 6369556 (2002-04-01), Ohshima
patent: 6396250 (2002-05-01), Bridge
patent: 6426612 (2002-07-01), Rozsypal
patent: 6674272 (2004-01-01), Hwang
Texas Instruments, “Low-Input Voltage-Mode Synchronous Buck Controller”, pp. 1-19, (Jan. 2002) Revised Jun. 2002.
Goder Dimitry
Sanzo Christopher J.
Fliesler & Meyer LLP
Sipex Corporation
Vu Bao Q.
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