| 摘要 |
PROBLEM TO BE SOLVED: To provide a power supply applied to a field emission display. SOLUTION: The power supply including a power supply controller, a high-voltage output circuit, and a middle-voltage/low-voltage/negative-voltage output circuit is presented. The power supply controller includes a pulse frequency modulator, an oscillator, a comparator, and a logic circuit, and drives an external system circuit. The high-voltage output circuit includes a feedback converter and a double-voltage rectifier circuit, and outputs a high voltage. The middle-voltage/low-voltage/negative-voltage output circuit includes a booster circuit and outputs a low voltage. The middle-voltage/low-voltage/negative voltage output circuit includes a triple-voltage charge pump circuit and a linear voltage regulator circuit, and outputs a middle voltage. The middle-voltage/low-voltage/negative-voltage output circuit includes a double-voltage charge pump circuit and a negative-voltage voltage regulator circuit and outputs a negative voltage. COPYRIGHT: (C)2008,JPO&INPIT
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