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dc/dc conversion device

The technology of a conversion device and conversion unit is applied in the direction of output power conversion device, high-efficiency power electronic conversion, control/regulation system, etc. It can solve the problems of complex circuit structure and cost increase, and achieve simplified circuit structure, improved power efficiency, The effect of reducing manufacturing costs

Active Publication Date: 2020-04-21
MURATA MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, installing an external power supply will also cause problems such as increased cost and complicated circuit structure.

Method used

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Examples

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Embodiment Construction

[0032] Below, refer to the attached figure 1 The DC / DC converter device according to the embodiment of the present invention will be described.

[0033] figure 1 It is a schematic block diagram showing the overall configuration of the DC / DC converter device according to the embodiment of the present invention. Such as figure 1 As shown, according to an embodiment of the present invention, the DC / DC conversion device has a voltage conversion circuit 1, and the voltage conversion circuit 1 converts a DC power supply voltage into a DC output Vout of a different voltage. The voltage conversion circuit 1 can generally be constituted by a voltage conversion circuit including a resonant circuit such as an LLC full-bridge conversion circuit or an LLC half-bridge conversion circuit. The voltage conversion circuit 1 usually also includes a plurality of power switching elements for applying the power supply voltage Vdd to the resonant circuit in different directions to generate a D...

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Abstract

The present invention provides a DCDC conversion device, including: a voltage conversion circuit, the voltage conversion circuit converts a DC power supply voltage into a DC output, including a resonant circuit and a device for applying the power supply voltage to the resonant circuit in different directions to generate a DC output A plurality of power switching elements; a switch control drive unit, the switch control drive unit outputs control signals to the plurality of power switch elements, and controls the conduction or disconnection of the plurality of power switch elements to generate a DC output; and a conversion unit, the conversion unit It is connected to the switch control driving part and connected to the power supply voltage through the voltage conversion circuit. In the initial start-up stage, the conversion part uses the power supply voltage to supply power to the switch control driving part. Provide power. By using the DCDC conversion device of the present invention, the overall power efficiency of the DCDC converter is improved, the manufacturing cost is reduced, and the circuit structure is simplified.

Description

technical field [0001] The present invention relates to a DC / DC conversion device, in particular to a DC / DC conversion device capable of providing a working voltage to a switch driving control part by using a DC power supply voltage in an initial start-up stage. Background technique [0002] In the prior art, a switching power supply is a power supply that uses modern power electronics technology to control the time ratio of switch on and off to maintain a stable output voltage. Among them, the DC / DC conversion device is a DC-DC conversion circuit. A voltage converter that efficiently converts a DC input voltage into a fixed DC output voltage. Generally speaking, DC / DC conversion devices are divided into three categories: step-up DC / DC converters, step-down DC / DC converters, and buck-boost DC / DC converters. Three types of control can be used according to requirements. Specifically, using the energy storage characteristics of capacitors and inductors, high-frequency switchin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/335H02M1/08
CPCH02M1/08H02M3/335H02M1/0048Y02B70/10
Inventor 代佳乐曹宇王可志
Owner MURATA MFG CO LTD