AC/DC hybrid input DC source

Abstract

The invention relates to an AC / DC (Alternating Current / Direct Current) hybrid input DC (Direct Current) source. The AC / DC hybrid input DC source includes an AC / DC converter, wherein an output terminal of the AC / DC converter is connected with two input terminals of a double-pole double-throw switch; a first output terminal of the double-pole double-throw switch is connected with a power source input terminal of a first DC converter; a second output terminal of the double-pole double-throw switch is connected with a first input terminal of a first single-pole double-throw switch; a second input terminal of the first single-pole double-throw switch is connected with a power output terminal of a second DC converter,; the DC power source also includes a second single-pole double-throw switch and a first comparator; and a first input terminal and a second input terminal of the second single-pole double-throw switch are respectively connected with a power output terminal of the first DC converter and a power input terminal of the second DC converter. The AC / DC hybrid input DC source utilizes the mode of AC charging and DC power supply to implement isolation on the ripple and power influence of the AC terminal, thus reducing the influence of the AC output ripple on power supply.

Description

technical field [0001] The invention belongs to the field of electronics and relates to a DC power supply, in particular to an AC-DC hybrid input DC power supply. Background technique [0002] With the rapid development of power electronics technology, the relationship between power electronic equipment and people's work and life is becoming increasingly close, and electronic equipment is inseparable from a reliable power supply. In the 1990s, switching power supplies entered the fields of various electronic and electrical equipment. Switches, communications, electronic testing equipment power supplies, and control equipment power supplies have all widely used switching power supplies, which has promoted the rapid development of switching power supply technology. [0003] In the existing equipment, AC power is generally used as the common working power source, but the instability of the AC grid makes it easy for some equipment that requires a stable output DC power level. a...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the technical defect that the existing AC power supply is likely to cause adverse effects on power-sensitive electrical equipment, the invention discloses an AC-DC hybrid input DC power supply

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