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Adjusting apparatus of output voltage for low voltage dc-dc converter

A technology of DC-DC and output voltage, which is applied in the field of low-voltage DC-DC converters for vehicles, and can solve problems such as rising production costs and complex circuits

Inactive Publication Date: 2013-05-08
HYUNDAI MOBIS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] As mentioned above, the layout of the output voltage adjustment technology of the conventional low-voltage DC-DC converter needs to add IC components such as DAC and OP amplifier in order to adjust; therefore, the circuit will become complicated and the production cost will increase. The problem

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  • Adjusting apparatus of output voltage for low voltage dc-dc converter
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  • Adjusting apparatus of output voltage for low voltage dc-dc converter

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Embodiment Construction

[0026] Embodiments of the output voltage regulating device of the low-voltage DC-DC converter according to the present invention will be described below with reference to the accompanying drawings. The output voltage regulator of the low-voltage DC-DC converter for vehicles has the function of converting the power input from the high-voltage DC power supply of the vehicle into a low voltage and providing it to the electric field load of the vehicle; adjusting the corresponding output according to the input tuning voltage function of voltage.

[0027] figure 2 is a circuit diagram of an output voltage regulating device of a low voltage DC-DC converter according to an embodiment of the present invention. Such as figure 2 As shown, the output voltage regulator 100 of the low voltage DC-DC converter may be composed of a control unit 110 , a switching unit 120 and a voltage output unit 130 .

[0028] The control unit 110 generates a digital control signal capable of controllin...

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Abstract

The present invention provides an adjusting apparatus of output voltage for a low voltage DC-DC converter, which adjusts output voltage corresponding with the input tuning voltage. The adjusting apparatus is characterized by comprising the following components: a control part which can generate and output a digital control signal for controlling the tuning voltage; a switching part which performs corresponding switching according to the digital control signal that is output from the control part; and a voltage output part which outputs a corresponding tuning voltage according to switching of the switching part. Thus, the adjusting apparatus realizes output voltage adjustment through a MOSFET switch and a resistor module, and the automatic IC component such as commonly used DAC and OP amplifier are replaced, thereby simplifying layout and reducing manufacturing cost.

Description

technical field [0001] The invention relates to a low-voltage DC-DC converter for vehicles, and more specifically relates to an output voltage regulator of a low-voltage CD-CD converter capable of adjusting the output voltage of the low-voltage DC-DC converter for vehicles. Background technique [0002] The traditional low voltage DC-DC converter (Low voltage DC-DC Converter, LDC) for vehicles is used to convert the high-voltage DC voltage output from the high-voltage battery of the hybrid vehicle into a low-voltage DC voltage, and Electric field load supplied to vehicles such as auxiliary batteries. [0003] Here, what regulates the output voltage of the automotive low-voltage DC-DC converter is, as figure 1 As shown in the block diagram, the control signal of the main controller 12 is realized by generating a tuning voltage (VREF) through a microprocessor 14, a DAC (Digital to Analog Converter) 16 and an OP amplifier 18. [0004] Specifically, as the main controller 12 s...

Claims

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Application Information

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IPC IPC(8): H02M3/00
CPCB60R16/033H02M3/157
Inventor 崔德宽
Owner HYUNDAI MOBIS CO LTD