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A circuit arrangement for operating a converter

A circuit device and converter technology, which is applied to output power conversion devices, lighting devices, electric light sources, etc., can solve the problems that batch applications cannot be implemented, the cost is low enough, and the bipolar transistor cannot drive the converter. Simple cost effect

Inactive Publication Date: 2010-08-04
OSRAM GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A disadvantage of the known solutions is that they cannot be realized cost-effectively enough for batch applications
A further disadvantage of the mentioned ICs is that it is thus only possible to drive the converter with MOS transistors as switches, but not with bipolar transistors as switches

Method used

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  • A circuit arrangement for operating a converter
  • A circuit arrangement for operating a converter
  • A circuit arrangement for operating a converter

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0022] figure 1 Firstly, a typical converter is shown schematically, which can be operated by means of the circuit arrangement according to the invention. Here, points P1, P2, P3 (which will be further explained below) and figure 2 Correspondingly marked point couplings of the exemplary embodiment of the circuit arrangement according to the invention shown in .

[0023] exist figure 1 The converter shown in includes a half-bridge circuit in which a first bridge switch S1 and a second bridge switch S2 are coupled in series at terminal U for the supply voltage V and the reference potential. connected in parallel with the first coupling capacitor C K1 and the second coupling capacitor C K2 series circuit. A series circuit of a plurality of components is arranged between the center point of the first half-bridge (indicated here by P1 ) and the center point of the second half-bridge (indicated here by P2 ). The series circuit includes the winding TR1-A of the transformer TR...

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PUM

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Abstract

A circuit arrangement for operating a converter, which comprises a bridge circuit having at least a first bridge switch and a second bridge switch and a first bridge center point and a second bridge center point is provided. The circuit arrangement may include a current differential amplifier, the first input of the current differential amplifier being coupled to a first comparison signal input, the second input of the current differential amplifier being coupled to a second comparison signal input, the output of the current differential amplifier being coupled to a control electrode of a first electronic switch.

Description

technical field [0001] The invention relates to a circuit arrangement for operating a converter comprising a bridge circuit with at least a first bridge switch and a second bridge switch as well as a first bridge center point and a second bridge center point, Wherein the circuit arrangement comprises: a power supply input terminal for connecting to a DC supply voltage; a first comparison signal input terminal coupled to the midpoint of the first bridge of the converter; a second comparison signal input terminal coupled to the first bridge midpoint of the converter The midpoint coupling of the two bridges; the first output terminal is used to provide a drive signal for at least one bridge switch of the converter; the shut-off device has a first electronic switch and a second electronic switch, wherein the first electronic switch and the second electronic switch The electronic switches each have a control electrode, a working electrode and a reference electrode, wherein the work...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/36
CPCH05B41/2985H02M7/523
Inventor 贝恩德·鲁道夫
Owner OSRAM GMBH