Power-on/power-off driving circuit and control method therefor

Abstract

The invention discloses a power-on/power-off driving circuit and a control method therefor, and belongs to the field of the electronic technology. The power-on/power-off driving circuit comprises a load, a switch circuit, a relay and a single-source driving circuit, wherein one end of the load is connected with the positive electrode of a first external power supply; the first input end of the switch circuit and a normally open contact of the relay are connected with the other end of the load separately; the output end of the switch circuit and a normally closed contact of the relay are connected with the negative electrode of the first external power supply; one end of the coil in the relay and the first input end of the single-source driving circuit are connected with the positive electrode of a second external power supply separately; the other end of the coil in the relay is connected with the second input end of the single-source driving circuit; the first output end of the single-source driving circuit is connected with the second input end of the switch circuit; the second output end of the single-source driving circuit is connected with the output end of the switch circuit; and the third output end of the single-source driving circuit is connected with the negative electrode of the second external power supply. According to the power-on/power-off driving circuit, the volume of the power-on/power-off driving circuit is reduced.

Description

technical field [0001] Embodiments of the present invention relate to the field of electronic technology, and in particular to a power-up and down drive circuit and a control method thereof. Background technique [0002] In a communication system, in order to improve the power utilization rate, it is necessary to perform power management on the communication power supply in the communication system, so as to effectively distribute the power of the communication power supply to different loads in the communication system. When performing power management, different loads can be powered on and off to realize power distribution to different loads, and different loads can be powered on and off by powering on and off the drive circuit. Wherein, powering on and off different loads refers to powering on or off different loads, and powering on a load means supplying power to the load, and powering off a load means disconnecting power supply to the load. [0003] At present, a power...

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Problems solved by technology

[0005] In order to solve the problem that the overall volume of the power-up and down drive circuit in the prior art is relatively large, the embodiment of the present invention provides a power-up and down drive circuit and its control method

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