| 摘要 |
A power supply converting circuit includes a multi-phase pulse-width modulation (PWM) controller, a single-phase PWM controller, some first voltage converting circuits, a second voltage converting circuit, and an electrical switch unit. The multi-phase PWM controller provides some first PWM signals and a second PWM signal. The single-phase PWM controller provides a third PWM signal. The first voltage converting circuits receive the first PWM signals to output a first power supply to a central processing unit (CPU) chipset. The electrical switch unit receives the second and third PWM signals to selectively output the second or third PWM signal to the second voltage converting circuit to output one of the first and second power supplies, such that the second voltage converting circuit selectively outputs one of the first and second power supplies to the CPU chipset. |
