Hybrid type voltage-stabilized power supply
A technology of regulated power supply and linear regulated power supply, which is applied in the direction of adjusting electrical variables, control/regulation systems, instruments, etc., and can solve problems such as large output waveform voltage ripple, voltage distortion delay, complex circuit design, etc., to achieve output The effects of small waveform ripple, wide frequency band, and improved power supply efficiency
Active Publication Date: 2014-11-12
ZHEJIANG UNIV OF TECH
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Problems solved by technology
However, the output waveform voltage ripple of the switching power supply is large, there are voltage distortion and delay, and the circuit design is more complicated, and the requirements for components are higher.
Method used
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[0017] The present invention will be further described below in conjunction with the accompanying drawings.
[0018] The hybrid regulated power supply of the present invention is characterized in that: it is formed by connecting a linear regulated power supply module and a switching power supply module in parallel; the linear regulated power supply module is composed of an operational amplifier U 2 , PNP transistor Q 1 and NPN transistor Q 2 , Zener diode D 2 , resistance R 3 and R 4 Composition; among them, D 2 Provides the reference voltage of the linear power supply, the transistor Q 1 and Q 2 To improve the output current drive capability of the voltage regulator module, the circuit controls the sliding rheostat R 4The value to control the size of the output voltage;
[0019] The switching power supply module includes an operational amplifier U 3 , external resistance R 6 and R 10 , Provide a reference power supply V ref Zener diode D 1 , limiting resistor R ...
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The invention discloses a hybrid type voltage-stabilized power supply. The hybrid type voltage-stabilized power supply is formed by a linear voltage-stabilized power supply module and a switching power supply module in a parallel connection mode. The linear voltage-stabilized power supply module is in parallel connection with the switching power supply module so that hybrid voltage stabilization is realized. Output voltage is determined by the linear voltage-stabilized power supply module, ripples of an output waveform are small, and the bandwidth of the output waveform is wide. Output current is mostly supplied by the switching power supply module, and therefore the power supply efficiency is improved. The hybrid type voltage-stabilized power supply integrates the advantages of a linear power supply and the advantages of a switching power supply, and therefore the performance of the hybrid type voltage-stabilized power supply is improved.
Description
technical field [0001] The invention relates to the design of a hybrid stabilized power supply, which can be widely used in the fields of remote and data communication, computer, office automation equipment, industrial instrumentation, military, aerospace and other fields, and involves all walks of life in the national economy. Background technique [0002] Commonly used regulated power supplies mainly include linear regulated power supply and switching regulated power supply. As the regulator tube works in the linear amplification area, when the load current is high, the collector loss of the regulator tube is large, and the power supply efficiency is low, generally only 40%-60%, and sometimes it needs to be equipped with a huge cooling device . However, the output waveform of the linear regulated power supply has the advantages of low distortion, fast dynamic response and wide frequency bandwidth. In the switching regulated power supply, the regulator tube works in the s...
Claims
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IPC IPC(8): G05F1/56
Inventor 李如春
Owner ZHEJIANG UNIV OF TECH