Miniature low-power hybrid integrated circuit and converter

Abstract

The invention provides a miniature low-power hybrid integrated circuit and a converter. The hybrid integrated circuit comprises a first conversion assembly and a second conversion assembly, wherein the first conversion assembly comprises an input circuit, a conversion circuit, an output circuit and a feedback circuit; the conversion circuit comprises a transformer and a plurality of switching devices; the output circuit comprises a rectifying circuit and a filtering circuit; the second conversion assembly comprises an input unit, an inversion unit, a resonance unit, a transformer combination unit, a rectification unit, an output unit and a feedback unit; the hybrid converter comprises an AC / DC converter and a DC-DC converter; the AC / DC converter is connected with the DC-DC converter through a front control circuit; the front control circuit is connected to a first feedback branch and a second feedback branch through a reference source circuit; and the input end of the first feedback branch is connected with the output end of the second feedback branch through a biasing circuit. According to the invention, hybrid AC / DC and DC-DC conversion is realized.

Description

technical field [0001] The invention belongs to the technical field of converters and switching power supplies, in particular to a miniature low-power hybrid integrated circuit and a converter thereof. Background technique [0002] The electricity used in daily life comes from the alternating current in the grid, but in fact most electronic equipment, such as computers and their peripherals, calculators, televisions, LED lighting equipment and Hi-Fi equipment, and various electronic instruments are powered by DC power. The DC power source can be a battery or an active power source. Most of these devices require not only the voltage after effective filtering and stabilization, but also need to be converted into a certain voltage value during the operation of the device. [0003] Switching power supply is a power electronic device that is widely used in consumer electronics such as mobile phones and MP3, as well as aerospace and other fields. This is because the electronic ...

AI Technical Summary

Problems solved by technology

[0005] The inventors found that the existing AC / DC converters still have major defects in safety protection and feedback control, especially in the application of low-power microcircuits, the existing AC / DC converters cannot adapt to the power change requirements, It cannot output stable DC low voltage; at the same time, the existing DC / DC converters also have relatively large defects in safety protection and feedback control, especially in the application of low-power microcircuits, the existing DC / DC converters It cannot adapt to the demand of power changes, and cannot output stable low voltage; in addition, the AC-DC and DC-DC conversion involved from the AC end to the electrical equipment end usually involves multiple modules, and the existing technology does not involve the unified integration of hybrid conversion architecture

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