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Trigger determination circuit applied to intelligent precision voltage stabilization chip of vehicle-mounted direct-current 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 of inability to preprocess and judge the output voltage of the vehicle-mounted DC converter, and achieve the goal of reducing driving hazards and improving stability Effect

Active Publication Date: 2016-01-20
合肥道一动力科技有限公司
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  • Summary
  • 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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  • Trigger determination circuit applied to intelligent precision voltage stabilization chip of vehicle-mounted direct-current 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 inc...

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Abstract

The invention relates to a trigger determination circuit applied to an intelligent precision voltage stabilization chip of a vehicle-mounted direct-current converter and solves the problem that output voltage of a vehicle-mounted direct-current converter cannot be predetermined in the prior art. An optical coupler reactive circuit comprises an optical coupler U 1; a pin 1 of a comparator U3A is connected to a pin 3 of the optical coupler U1; a pin 1 of the optical couple U1 is connected in series with output voltage through a resistor R5; a pin 5 and a pin 6 of the optical coupler U1 are connected in parallel and then connected to a voltage stabilization chip pattern port TR through a resistor R11; a pin 4 of the optical coupler U1 is connected to a ground wire GND1; a power supply voltage VCC is sequentially connected in series with a resistor R1 and a resistor R13 and then is connected to the ground wire GND 1; and the voltage stabilization chip pattern port TR is connected in parallel between the resistor R1 and the resistor R13. The invention can determine the working mode of the voltage stabilization chip through 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 / DCConvertor), 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 vehicle's 12V power network, which requires very high accuracy of the output voltage of the on-board 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, power steer...

Claims

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Application Information

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Patent Type & Authority Applications(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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