Design of singlechip-controlled switch power

Abstract

The invention discloses a design of singlechip-controlled switch power, which is characterized by comprising a numerical control switch power formation system of a singlechip and a numerical control system of a Sunplus singlechip switch power. The switch power formation system consists of an EML filter network, a rectifying filter circuit, a power converting circuit, a driving circuit, an output circuit, a voltage stabilizing circuit, an over-current protecting circuit and an auxiliary power circuit. The numerical control system of the switch power is controlled by an SPCE061A singlechip of Sunplus Company, the SPCE061A singlechip mainly comprises an input / output port, a timer / a counter, a D / A conversion, an A / D conversion, serial apparatus input output, a universal asynchronous serial interface, low voltage monitoring, reset, and the like. The invention has stable output voltage, high accuracy, wide adjustment range, high conversion efficiency and small power consumption and ripple current, thereby satisfying higher requirements on power source performance in laboratory and in life.

Description

technical field [0001] The invention relates to the design of a switching power supply, in particular to the design of a switching power supply controlled by a single-chip microcomputer. Background technique [0002] At present, in various electronic appliances and experimental equipment, various power supplies are commonly used, and the voltage requirements are various. How to design a voltage source with stable voltage, high output voltage accuracy, and wide adjustment range has become a hot spot in basic electronic applications; in the market, power supply products are adjustable and fixed, but there are some common problems, such as The conversion efficiency is low, the power consumption is large, especially the output accuracy is not high, the adjustable range is too small, the output voltage is not stable enough, the ripple current is too large, and the adjustable resistor is generally used for adjustment, the operation is difficult, easy to wear and age, and cannot me...

AI Technical Summary

Problems solved by technology

How to design a voltage source with stable voltage, high output voltage accuracy, and wide adjustment range has become a hot spot in basic electronic applications; in the market, power supply products are adjustable and fixed, but there are some common problems, such as The conversion efficiency is low, the power consumption is large, especially the output accuracy is not high, the adjustable range is too small, the output voltage is not stable enough, the ripple current is too large, and the adjustable resistor is generally used for adjustment, the operation is difficult, easy to wear and age, and cannot meet the requirements The user's demand for a specific voltage has prominent disadvantages

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