Abstract: A backup power supplying device having programmable current-balancing control includes at least two power modules connected in parallel. The power module includes a power converter, a current sensing component, a potential tuner, a microprocessor, a current-balancing control circuit and an output voltage controller. The current sensing component senses an output current of the power converter to generate a current sensing signal. The microprocessor controls the potential tuner to generate a tuning signal, and receives a mode signal to control the power module to operate in a power supply or sleep mode. The current-balancing control circuit receives the current sensing signal, the tuning signal and the mode signal. When the power module operates in the sleep mode, an output voltage of the power converter is a sleep voltage; a voltage level of the sleep voltage is lower than a voltage level of a supply voltage by a predetermined voltage value.

Abstract: A backup power supplying device having programmable current-balancing control includes at least two power modules connected in parallel. The power module includes a power converter, a current sensing component, a potential tuner, a microprocessor, a current-balancing control circuit and an output voltage controller. The current sensing component senses an output current of the power converter to generate a current sensing signal. The microprocessor controls the potential tuner to generate a tuning signal, and receives a mode signal to control the power module to operate in a power supply or sleep mode. The current-balancing control circuit receives the current sensing signal, the tuning signal and the mode signal. When the power module operates in the sleep mode, an output voltage of the power converter is a sleep voltage; a voltage level of the sleep voltage is lower than a voltage level of a supply voltage by a predetermined voltage value.

Abstract: A power supplying device having programmable current-balancing control includes at least two power modules in parallel. Each power module includes a power convertor, a current sensing component, a tuning circuit, a current-balancing control circuit and an output voltage controller. The power convertor provides power to a load via an output end. The current sensing component senses output current of the power convertor to generate a current sensing signal. The tuning circuit generates a tuning signal according to a control signaling from a communicating port. The current-balancing control circuit receives the current sensing signal and the tuning signal. The current-balancing control circuit generates a current-balancing signal according to the current sensing signal. The current-balancing control circuit generates a voltage control signal according to the tuning signal.

Abstract: The invention provides a power supply for a computer mainframe, which is cooled by a heat conduction method, and more particularly to a power supply without a cooling fan. The present invention features a highly effective heat pipe connecting a plurality of aluminum-extrusion heat sink fins and a plurality of aluminum-extrusion heat sinks, the aluminum-extrusion heat sink fins fixed above a cooling chip over a circuit board, and the aluminum-extrusion heat sinks fringed near the power supply, with a part of the heat sink fins exposed to the power supply. The heat of a chip is conducted out of the power supply by the aluminum-extrusion heat sink fins, the high-effect heat pipe, and the aluminum-extrusion heat sinks. Therefore, the power supply can reach an expected cooling effect without the cooling fan.