Power supply capable of adaptively adjusting voltage stabilization feedback compensation bandwidth range

By designing a circuit structure with adaptive adjustment of voltage regulator compensation bandwidth in the power supply, the problem that existing power supply cannot achieve low loss in different load modes is solved, and a more efficient and flexible power supply is achieved.

CN119853428APending Publication Date: 2025-04-18ACER INC
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Patent Information

Application Number
CN202311350542.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2023-10-18
Publication Date
2025-04-18

AI Technical Summary

Technical Problem

Existing power supply cannot achieve low loss optimization in different load modes, and the designed single voltage regulator feedback compensation bandwidth cannot adapt to different load conditions.

Method used

A power supply with a wide range of adaptive adjustment and voltage stabilization compensation is designed, including a noise suppression circuit, a boost-type active power factor correction circuit, an active clamping and flip-flop conversion circuit, a voltage stabilization feedback compensation circuit and a control circuit. By combining detection voltage and control signals, the voltage regulator feedback compensation bandwidth range is dynamically adjusted to adapt to different load modes.

Benefits of technology

The optimization of low loss in different load modes is achieved, and the efficiency and adaptability of the power supply is improved by adaptively adjusting the voltage regulator feedback compensation bandwidth.

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Abstract

The power supply comprises a noise suppression circuit, an active power factor correction circuit, an active clamping flyback conversion circuit, a voltage stabilization feedback compensation circuit and a control circuit. The active power factor correction circuit and the active clamping flyback conversion circuit convert the AC voltage into an output voltage required by the operation of the load device, and the voltage stabilization feedback compensation circuit provides voltage stabilization feedback compensation for the output voltage. The active clamping flyback conversion circuit switches the operation mode according to the instant output load of the power supply, and the control circuit controls the operation of the voltage stabilization feedback compensation circuit according to the operation mode of the active clamping flyback conversion circuit. And the equivalent capacitance of the voltage-stabilizing feedback loop is adjusted according to different output loads so as to provide a corresponding voltage-stabilizing feedback compensation bandwidth range.
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