Power tube driving integrated circuit

A technology for driving integrated circuits and integrated circuits, which is applied in the direction of electrical components, electronic switches, pulse technology, etc., can solve the problems of power tube burnout, slow driving speed, and insufficient integration, so as to reduce costs, improve machine reliability, Effect of large current drive capability

Active Publication Date: 2015-12-16
SINOTECH MIXIC ELECTRONICS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the solution driven by the former discrete device, it needs to use at least three triodes and several resistors to drive the power tube, and because it is relatively scattered and the integration level is not high enough, it leads to a large PCB area occupied by it, and the device is soldered There are many dots, and the poor rat...

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  • Power tube driving integrated circuit
  • Power tube driving integrated circuit

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Embodiment Construction

[0027] In order to make the technical means, creative features, goals and functions achieved by the present invention clearer and easier to understand, the present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments:

[0028] Such as Figure 1-2 As shown, the present invention provides a power tube driving integrated circuit, the signal input terminal Vin of the integrated circuit 200 is connected to the control unit 100 to receive the driving signal from the control unit for driving the power tube, and the integrated circuit 200 The signal output terminal Vout is connected to the power tube POWER, so as to switch the power tube on and off under the action of the driving signal, wherein the integrated circuit 200 is provided with a ground wire connected to the control unit on the signal input side. The connected control ground terminal GNDA is provided with a power ground terminal GNDP electrically connected to the ...

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Abstract

The invention discloses a power tube driving integrated circuit. The signal input terminal of the integrated circuit is in connection with a control unit so as to receive the driving signal of driving a power tube from the control unit; and the signal output terminal of the integrated circuit is in connection with the power tube so as to connect / disconnect the power tube under the effect of the driving signal, wherein the signal input side of the integrated circuit is provided with a control earth terminal in electric connection with the ground wire of the control unit; and the signal output side is provided with a power earth terminal in electric connection with the emitter or source of the power tube. The power tube driving integrated circuit integrates discrete devices on a single IC, thereby reducing peripheral device costs, and improving the reliability of a whole machine; even more important, the signal input side and the signal output side are respectively provided with an earth port for connecting with the control unit and a driven power tube; the control earth terminal and the power earth terminal are separated, thereby effectively obtaining a smooth driving power tube conduction curve.

Description

technical field [0001] The invention relates to a driving circuit of a power tube, in particular to a power tube driving integrated circuit capable of obtaining a smooth conduction curve of the driving power tube. Background technique [0002] Power tubes (such as IGBTs, power NMOS tubes, etc.) on the market today are driven by two driving methods, one is driven by discrete devices, and the other is driven by IC integrated circuits. For the solution driven by the former discrete device, it needs to use at least three triodes and several resistors to drive the power tube, and because it is relatively scattered and the integration level is not high enough, it leads to a large PCB area occupied by it, and the device is soldered There are many dots, and the poor rate of solder joint processing is also high, which greatly affects its use in the market; for the scheme using integrated circuit drive, its driving speed is slow, the grid curve of the driving power tube is not smooth,...

Claims

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Application Information

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IPC IPC(8): H03K17/041H03K17/16
Inventor 潘军冉建桥吴欣竹
Owner SINOTECH MIXIC ELECTRONICS
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