Multichannel digital power supply

Abstract

The invention discloses a multichannel digital power supply, which comprises a main controller, a user interaction press key control circuit, an OLED display circuit, STM32F334 control minimum systemboards, a BUCK / BOOST hardware circuit and an ADC sampling circuit, a driving circuit and an anti-reverse connection circuit, wherein a master-slave type processor architecture is used; a multipath two-way input output port and a multipath one-way output port are used; interfaces are rich; the main controller is used for parameter setting; the parameter is transmitted to the control minimum systemboards; a output control effect is achieved; the control minimum system boards returns system parameters such as voltage and current to a main control board; the main control board displays the parameters through OLED; for a lithium battery supporting an SMBUS protocol, the self adaption of a charging and discharging function can be realized; the hardware has a serial port communication bus interface and can communicate with a computer; a host computer displays and controls the digital power supply.

Description

technical field [0001] The invention belongs to the field of power supply equipment, in particular to a multi-channel digital power supply adopting a master-slave processor architecture. Background technique [0002] In recent years, with the increasing dependence of people on electronic devices, higher and higher requirements are placed on the battery life of the devices. Therefore, an electronic product that integrates charging and power supply functions - mobile power has emerged as the times require. Judging from the existing data, in some literatures, two unidirectional DC / DC converters are used in anti-parallel structure to realize the functions of charging and power supply in the form of pure hardware circuits. Because the energy flow is fixed and does not have reversibility, This significantly increases the number of system components and reduces the functional density. However, in some literatures, a solution to manage battery charging and discharging states by coo...

AI Technical Summary

Problems solved by technology

In the prior art, digital power supplies have two bidirectional BUCK / BOOST topologies: the first bidirectional BUCK / BOOST topology has two working modes: forward buck and reverse boost, that is, only Buck or boost, but in terms of use, it cannot meet a relatively wide range of voltage requirements; the second bidirectional BUCK / BOOST topology can achieve both boost and buck in the same direction, but this scheme The input and output ports are single, which cannot meet the power supply requirements

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