| 摘要 |
PURPOSE: A circuit for a display power management is provided to prevent a damage of a driving transistor by performing a pulse width modulation when being converted to an operation mode. CONSTITUTION: The circuit for a display power management comprises: a rectification device(11, 12, 13) for modulating a first input voltage of a transformer to a second input voltage of the transformer and rectifying the modulated voltage to multi-level; and a power management controller(16) for stabilizing an output voltage of the rectification device by controlling a heater power supplied to a monitor according to a plurality of DPM signal level when operating a system according to the corresponding mode, or a pulse width modulation signal of a power switching device(20) connected to the first terminal of the transformer.
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