Electricity: power supply or regulation systems – Output level responsive – Using a three or more terminal semiconductive device as the...
Reexamination Certificate
2009-04-01
2011-10-11
Sterrett, Jeffrey (Department: 2838)
Electricity: power supply or regulation systems
Output level responsive
Using a three or more terminal semiconductive device as the...
C323S901000
Reexamination Certificate
active
08035360
ABSTRACT:
A power converting device including a pulse width modulation circuit, a switch unit, a power output unit and a voltage start unit is provided. The pulse width modulation circuit increases a start voltage in a soft start mode and is operated under the start voltage to generate a pulse width modulation signal. The switch unit is for receiving an input voltage, and forming a charge path and a discharge path alternately according to the pulse width modulation signal. The power output unit converts the input voltage to a core voltage in accordance with the charge path and the discharge path. The voltage start unit is for detecting the start voltage, and for transmitting a control signal to interrupt the formation of the discharge path when the start voltage is smaller than the core voltage.
REFERENCES:
patent: 7576522 (2009-08-01), Chen et al.
patent: 7764053 (2010-07-01), Mehas et al.
patent: 7782024 (2010-08-01), Fukushi et al.
patent: 7839130 (2010-11-01), Shimizu
Liu Shih-Hao
Xia Chun-Hua
Inventec C'orporation
J.C. Patents
Sterrett Jeffrey
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