High-frequency switch power supply
A high-frequency switching power supply, charging and discharging circuit technology, applied in the electrical field, can solve the problems of poor stability and low switching power supply efficiency, and achieve the effects of small voltage regulation rate, stable output voltage and high efficiency
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[0013] As shown in the figure, the present invention includes an oscillator, an A / D conversion module, a memory module, a comparison module, an overcurrent protection circuit, a charging and discharging circuit, a single-phase rectifier bridge, a differential amplifier and an overvoltage protection circuit, and is characterized in that: The converter, A / D conversion module, memory module and comparison module are connected to the ports of the main controller; the main controller is also connected to the overcurrent protection circuit, charge and discharge circuit, single-phase rectifier bridge, differential amplifier and overvoltage protection circuit.
[0014] The main controller is a SG3525 single-chip microcomputer.
[0015] The pin 16 of the control chip SG3525 is the reference voltage source output of the SG3525, the precision can reach (5.1±1%) V, temperature compensation is adopted, and an over-current protection circuit is provided. There is a dual-threshold comp...
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