| 摘要 |
A power supply system including a controller capable of regulating a pulsed output voltage. The power supply system includes a load, a switching circuit connected to the load, and a controller electrically connected to the switching circuit. The controller is adapted to transmit a switching signal to the switching circuit for generating an adjustable duty cycle pulsed voltage to provide power to the controller and the load. The controller is further adapted to adjust the pulsed output voltage against a reference voltage by varying the duty cycle of the switching signal. The power supply system may include a start-up circuit electrically connected to the controller and adapted to provide a start-up voltage to the controller until the controller is powered by an operating voltage through the switching circuit.
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