Patent ID: 8854848

Claim:
A power supplying device having programmable current-balancing control, comprising: at least two power modules; the power modules output power to a load in parallel with each other; each of the power modules comprises: a power convertor, having an output end; the power convertor provides power to the load via the output end; a current sensing component, coupling to the output end of the power convertor, sensing output current of the power convertor to generate a current sensing signal; a tuning circuit, having a communicating port, generating a tuning signal according to a control signaling from the communicating port; a current-balancing control circuit, coupling to the current sensing component and the tuning circuit, receiving the current sensing signal and the tuning signal, wherein when the current-balancing control circuit does not receive the tuning signal, the current-balancing control circuit generates a current-balancing signal according to the current sensing signal, and when the current-balancing control circuit receives the tuning signal, the current-balancing control circuit generates a voltage control signal according to the tuning signal; and an output voltage controller, coupling to the current-balancing control circuit, tuning an output voltage of the power convertor according to the current-balancing signal or the voltage control signal; wherein the current-balancing control circuits of the power modules coupling with each other via a communicating wire.