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Current peak compensation circuit

A technology for compensating circuits and current peaks, which is applied in the electronic field and can solve problems such as system disorder and system oscillation

Inactive Publication Date: 2019-09-20
HANGZHOU KUANFU TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] If the peak current compensation is not enough, it will cause system oscillation and cause system disorder. For this purpose, a current peak compensation device is designed.

Method used

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  • Current peak compensation circuit

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Embodiment Construction

[0008] The content of the present invention will be further described below in conjunction with the accompanying drawings.

[0009] current peak compensation circuit, such as figure 1 As shown, it includes error amplifier 101, pulse width modulation circuit 102, power tube 103, synchronous tube 104, energy storage inductor 105, filter capacitor 106, first LED lamp 107, second LED lamp 108, sampling resistor 109, comparator 110 , diode 111 and NPN tube 112:

[0010] The positive input terminal of the error amplifier 101 is connected to the reference voltage VREF1 and the anode of the diode 111, the negative input terminal is connected to one end of the sampling resistor 109 and the cathode of the LED lamp 108, and the output terminal controls the pulse width modulation circuit 102; one end of the pulse width modulation circuit 102 is connected to the output end of the error amplifier 101, and the turn-on time of the power transistor 103 and the synchronization transistor 104 i...

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Abstract

The invention discloses a current peak compensation circuit. The current peak compensation circuit comprises an error amplifier, a pulse width modulation circuit, a power tube, a synchronous tube, an energy storage inductor, a filter capacitor, a first LED lamp, a second LED lamp, a sampling resistor, a comparator, a diode, and an NPN transistor. The system can be more stable by using the current peak compensation circuit.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a current peak compensation circuit. Background technique [0002] Insufficient peak current compensation will cause system oscillation and system disorder, so a current peak compensation device is designed. Contents of the invention [0003] The invention aims to solve the deficiencies of the prior art, and provides a current peak compensation circuit. [0004] Current peak compensation circuit, including error amplifier, pulse width modulation circuit, power tube, synchronous tube, energy storage inductor, filter capacitor, first LED light, second LED light, sampling resistor, comparator, diode and NPN tube: [0005] The positive input terminal of the error amplifier is connected to the reference voltage VREF1 and the anode of the diode, the negative input terminal is connected to one end of the sampling resistor and the cathode of the LED lamp, and the output terminal c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/158H05B33/08H05B44/00
CPCH02M3/158H02M1/0038H05B45/37
Inventor 胡曙敏
Owner HANGZHOU KUANFU TECH
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