Digital low-carbon power supply

Abstract

The invention discloses a digital low-carbon power supply. The digital low-carbon power supply comprises an AC-DC conversion module, a PFC circuit module, an LLC circuit module, a transformer, a voltage phase detection circuit, a transformation control module and a rectification circuit. Boosting the first direct current into second direct current through a PFC circuit module; the LLC circuit module carries out pulse modulation in a resonant mode on the second direct current; the voltage phase detection circuit performs phase detection on the input alternating current; pFC in-phase boosting and LLC resonance pulse width modulation control are carried out on the first direct current and the input alternating current through transformation control of the transformation controller, and the PFC circuit module and the LLC circuit module are controlled through the same transformation controller, so that the PFC circuit module and the LLC circuit module form an integral circuit; and abnormal states are uniformly processed through the voltage transformation controller, so that the safety of the whole circuit is improved. The whole circuit is relatively simple, the production cost of the power supply can be reduced, and the maintenance cost is relatively low.

Description

technical field [0001] The invention relates to the technical field of power supplies, in particular to a digital low-carbon power supply. Background technique [0002] Switching power supply is a kind of power supply that maintains a stable output voltage by controlling the time ratio of the switch tube being turned on and off. In the state, the switch tube will have a current flow. In this way, the switching tube will generate additional power loss. In order to reduce the power loss of the switching tube, an LLC resonant circuit structure can be used to make the switching tube work in a soft-on state. But the pure LLC resonant circuit architecture power factor correction PFC is relatively low. It is difficult to meet the circuit design requirements of high PFC. However, if a separate PFC circuit and LLC circuit are used to design the power supply. The relative independence between the two-level circuits will lead to difficulties in handling exceptions between the two-l...

AI Technical Summary

Problems solved by technology

However, the pure LLC resonant circuit architecture power factor correction PFC is relatively low

It is difficult to meet the circuit design requirements of high PFC

However, if the power supply is designed with a separate PFC circuit and LLC circuit

The two-level circuits are relatively independent, which will make it difficult to handle exceptions between the two-level circuits and reduce the safety of the overall circuit

and lead to a very complex and bulky overall circuit

Power supply production costs and maintenance costs are relatively high

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