Device and system for load driving

摘要

A device and system for load driving. The device includes: an electric energy supplying unit including at least two units with output voltage adjustable; a sampling unit, with the input thereof connected to either end of a load unit for sampling the current of that end and sending the sampled current to an output voltage controller; the output voltage controller, with the input thereof connected to the output of the sampling unit for outputting voltage control signal to each unit with output voltage adjustable, according to the sampled current, so as to control the difference between the output voltage of each unit with output voltage adjustable and the maximum load voltage in a load branch to be not greater than a preset difference threshold, with the difference threshold being greater than or equal to zero. The device and system for load driving can improve the reliability of the driving device and can reduce the complexity of the circuit.

主权项

1. A load driving device, comprising:
an electric energy supplying unit comprising at least two output voltage adjustable units, wherein a first output of each output voltage adjustable unit is connected to a first output of the electric energy supplying unit and a second output of each output voltage adjustable unit is connected to a second output of the electric energy supplying unit; a sampling unit having an input connected to either output of the electric energy supplying unit, and adapted to sample a current from the output of the electric energy supplying unit and transmit the sampled current to an output voltage controller; and the output voltage controller having an input connected to an output of the sampling unit, and adapted to determine an output voltage control strategy for the output voltage adjustable units according to the sampled current and output a voltage control signal to each output voltage adjustable unit according to the control strategy, so as to control a difference between an output voltage of each output voltage adjustable unit and a maximum load voltage of load branches in a post-stage to be not greater than a preset difference threshold, the preset difference threshold being greater than or equal to zero.