Electricity: power supply or regulation systems – Output level responsive – Using a three or more terminal semiconductive device as the...
Reexamination Certificate
2006-12-12
2006-12-12
Berhane, Adolf (Department: 2838)
Electricity: power supply or regulation systems
Output level responsive
Using a three or more terminal semiconductive device as the...
Reexamination Certificate
active
07148668
ABSTRACT:
The leakage current due to a parasitic PNP bipolar transistor in the PMOS switching transistor of a synchronous boost DC-to-DC switching regulator is substantially eliminated by placing the input voltage on the body of the PMOS switching transistor when the input voltage is greater than the output voltage, and placing the output voltage on the body of the PMOS switching transistor when the input voltage is less than the output voltage.
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patent: 6621256 (2003-09-01), Muratov et al.
Toko Inc., TK65600B Datasheet, “Inductive White LED Driver With Synchronous Rectifier”, Jul. 2, 2003, pp. 1-12.
Toko Inc., TK65700L Datasheet, “Charge Pump White LED Driver”, Jul. 12, 2002, pp. 1-10.
U.S. Appl. No. 10/454,882, filed Jun. 5, 2003, Doyle.
Berhane Adolf
National Semiconductor Corporation
Pickering Mark C.
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