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A trigger judgment circuit for an intelligent precision voltage regulator chip of a vehicle-mounted DC converter

A technology of DC converter and voltage regulator chip, which is applied in the direction of conversion equipment without intermediate conversion to AC, which can solve the problems that the output voltage of the vehicle-mounted DC converter cannot be preprocessed and judged, so as to reduce driving hazards and improve stability. Effect

Active Publication Date: 2017-08-25
合肥道一动力科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the defect that the output voltage of the vehicle-mounted DC converter cannot be preprocessed and judged in the prior art, and to provide a trigger judgment circuit for the intelligent precision voltage regulator chip of the vehicle-mounted DC converter to solve the above problems

Method used

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  • A trigger judgment circuit for an intelligent precision voltage regulator chip of a vehicle-mounted DC converter

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Embodiment Construction

[0014] In order to have a further understanding and understanding of the structural features of the present invention and the achieved effects, the preferred embodiments and accompanying drawings are used for a detailed description, as follows:

[0015] Such as figure 1 As shown, a trigger judgment circuit for an intelligent precision voltage regulator chip of a vehicle-mounted DC converter according to the present invention includes a reference voltage circuit, a comparison circuit and an optocoupler feedback circuit. The reference voltage circuit is used to generate the reference voltage, which is supplied to the comparison circuit for voltage comparison. The comparison circuit is used to compare the reference voltage with the actual voltage, and judge whether to trigger the optocoupler feedback circuit according to the comparison result, thereby triggering different tasks of the intelligent precision voltage regulator chip model.

[0016] The reference voltage circuit incl...

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Abstract

The invention relates to a trigger judging circuit for an intelligent precision voltage stabilizing chip of a vehicle-mounted DC converter, which solves the defect that the output voltage of the vehicle-mounted DC converter cannot be preprocessed and judged compared with the prior art. The optocoupler feedback circuit of the present invention includes an optocoupler U1, the 1 pin of the comparator U3A is connected to the 3 pin of the optocoupler U1, the 1 pin of the optocoupler U1 is connected to the output voltage in series through the resistor R5, and the optocoupler U1 The 5 pins and 6 pins are connected in parallel and then connected to the voltage regulator chip mode port TR through the resistor R11, the ground wire GND1 of the 4 pin of the optocoupler U1, and the power supply voltage VCC are connected in series with the resistor R1 and the resistor R13 in sequence, and then the ground wire GND1, The regulator chip mode port TR is parallel connected between the resistor R1 and the resistor R13. The invention can judge and trigger the working mode of the voltage stabilizing chip according to the output voltage.

Description

technical field [0001] The invention relates to the technical field of vehicle-mounted DC converters, in particular to a trigger judgment circuit for an intelligent precision voltage regulator chip of a vehicle-mounted DC converter. Background technique [0002] In electric vehicles, all 12V power networks are powered by the vehicle's 12V lead-acid battery through the on-board DC converter (DC / DC Convertor), that is to say, the on-board DC converter charges the vehicle's 12V lead-acid battery At the same time, it also supplies power to the 12V power network of the vehicle, which requires very high accuracy of the output voltage of the vehicle-mounted DC converter. If the output voltage accuracy of the vehicle-mounted DC converter is too low, the output voltage will be too high or too low, which will lead to the high or low supply voltage of the 12V power network of the vehicle, which will directly affect the 12V power network. Normal work, such as lights, instrument panels,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/07
Inventor 刘蕾王淑旺尹亚琴苑红伟
Owner 合肥道一动力科技有限公司
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