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Method for operating a dc/dc voltage step-down converter

A step-down converter and output voltage technology, which is applied in the direction of battery/battery traction, control/regulation system, output power conversion device, etc., can solve the problems of uncontrollable and other problems, and achieve simple control device and low manufacturing cost Effect

Active Publication Date: 2018-10-23
VTESCO TECH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

output voltage V S This increase of can not be controlled by the regulation switch 14 in blocking state

Method used

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  • Method for operating a dc/dc voltage step-down converter
  • Method for operating a dc/dc voltage step-down converter
  • Method for operating a dc/dc voltage step-down converter

Examples

Experimental program
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Embodiment Construction

[0046] image 3 An implementation example of the DC / DC step-down converter 20 is shown.

[0047] The buck converter 20 is implemented for supplying an output voltage V having a regulated value from a power source 50 to the terminals of a load 60 S . In the ensuing description, in a non-limiting manner, in the case of a buck converter 20 installed in a motor vehicle, the power source 50 is, for example, the battery of the motor vehicle, or a voltage regulator connected to said battery ,etc. Load 60 is, for example, a microcontroller of the electronic computer of the motor vehicle.

[0048] Depend on image 3 The illustrated buck converter 20 comprises an inductive component 21 one terminal of which is connected to a capacitive component 22 at the output of the buck converter 20 . More particularly, capacitive component 22 includes two terminals, one of which is connected to inductive component 21 and the other of which is connected to electrical ground.

[0049] The other...

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PUM

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Abstract

The invention relates to a method for operating a buck converter (20) comprising an inductive component (21) one terminal of which is connected to a power supply via a regulating switch (24) (50), and the other terminal of the inductance component is connected to the capacitive component (22), the output voltage of the step-down converter is adjusted by alternating connection intervals and disconnection intervals, during which the connection intervals are adjusted The switch is in a conducting state, and during the disconnection interval, the regulating switch is in a blocking state, and when the value of the output voltage reaches the disconnecting threshold, the regulating switch is controlled to change from the conducting state to the blocking state. The disconnection threshold has a variable value that gradually decreases from a maximum value of the disconnection threshold during each connection interval.

Description

technical field [0001] The present invention is in the field of direct voltage / direct voltage converters, known as "DC / DC converters", and more particularly relates to methods for operating DC / DC step-down converters, known as "buck converters". A method in which the buck converter is used to supply an output voltage having a regulated value to a load terminal. Background technique [0002] There are many applications for buck converters. In particular, they are used in motor vehicles for reducing the voltage supplied by a power source (which may be the motor vehicle's battery, a voltage regulator connected to the battery, etc.), in order to power especially the electronic computer of said motor vehicle . [0003] figure 1 A buck converter 10 is shown, conventionally comprising an inductive component 11 having one terminal connected to a capacitive component 12 at the output of the buck converter 10 . More particularly, the capacitive component 12 includes two terminals,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/156
CPCB60L50/60H02M3/156H02M1/0003Y02T10/70B60L50/50
Inventor S.圣-马卡里
Owner VTESCO TECH GMBH
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