Multistage power amplification and pulse width modulation type mixed protection stabilized switching power supply
A switching regulated power supply and power amplification technology, which is applied in emergency protection circuit devices, electric variable adjustment, output power conversion devices, etc., can solve problems such as large ripple coefficient, low efficiency, radio frequency interference, etc., and improve the control range. , improve safety and, protect the effect of circuit structure
Inactive Publication Date: 2015-10-21
CHENGDU LEIKEER SCI & TECH
View PDF0 Cites 4 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] The purpose of the present invention is to overcome the defects of large ripple coefficient, serious radio frequency interference, complex circuit and low efficiency existing in the current switch-type regulated power supply, and provide a multi-stage power amplification pulse width modulation hybrid protection switch regulated power supply
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0023] Such as figure 1 As shown, the present invention includes a diode rectifier U, a power amplifier P1, a transformer T, a switch filter circuit, a power supply output circuit, a voltage transformation feedback circuit, a switch control circuit, an oscillator 40, a current comparator I1, a current comparator I2, and a slope Compensator W, PWM controller 30 , sliding regulator 50 , hybrid protection circuit 10 and logic protection amplifier circuit 20 . Wherein, the transformer T is composed of a primary coil L1 disposed on its primary side, a secondary coil L2 and a secondary coil L3 disposed on its secondary side. In the present invention, a sliding tap is provided on the primary side coil L1 of the transformer T, and the sliding tap is controlled by a sliding regulator 50, so as to ensure that according to the common result of the duty cycle of the PWM controller 30 and the switch control circuit The turns ratio between the primary coil L1 and the secondary coil L2 and ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a multi-stage power amplification pulse width-modulation type switch voltage stabilizing power source which is mainly composed of a diode rectifier U, a power amplifier P1, a transformer T, a switch filter circuit connected between the diode rectifier U and the power amplifier P1 in series, a power source output circuit connected with a secondary side coil L2 of the transformer T, a voltage transformation feedback circuit connected with a secondary side coil L3 of the transformer T, a switch control circuit connected with the voltage transformation feedback circuit, an oscillator connected with the switch control circuit and the like. The multi-stage power amplification pulse width-modulation type switching voltage stabilizing power source is characterized in that a logic protection amplification circuit is further connected between the negative electrode output end of the diode rectifier U and the negative electrode output end of the power amplifier P1 in series. Field-effect tubes are used for forming the switch control circuit, so that the multi-stage power amplification pulse width-modulation type switching voltage stabilizing power source has a voltage increasing mode and a voltage reducing mode, the change of the output current in the full voltage range is controlled within + / -0.1%, and the change control range of the output current is greatly enlarged compared with a traditional switch voltage stabilizing power source.
Description
technical field [0001] The invention relates to a switch stabilized voltage power supply, in particular to a multi-stage power amplified pulse width modulation mixed protection switch stabilized voltage power supply. Background technique [0002] With the continuous advancement of science and technology, electronic products have brought great convenience to people's life while their functions are becoming more and more powerful. The voltage stabilizing circuit is easy to operate. The traditional series linear regulating voltage stabilizing circuit has the characteristics of high stability, adjustable output voltage, small ripple coefficient, and simple circuit. However, the adjustment tubes of these series linear adjustment type voltage regulator circuits always work in the amplified state, and current flows all the time, so the power consumption of the tubes is relatively large, and the efficiency of the circuit is not high, generally only reaching 30% to 50%. %about. In ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/335H02M1/44H02H5/04H02H3/20
CPCH02M3/33507H02M7/217
Inventor 黄涛
Owner CHENGDU LEIKEER SCI & TECH