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Switching module, drive circuit, and system and method for switch module

A technology for switching modules and driving circuits, applied in circuits, electronic switches, electrical components, etc., can solve problems such as space requirements, limited performance of power transistors, parasitic effects, etc.

Pending Publication Date: 2022-02-22
INFINEON TECH AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this may be too slow in some cases, ie detecting a short circuit and subsequently switching off the power transistor may take too long
Also, this approach may limit the performance of the power transistor and requires additional components like diodes outside the power transistor package, which requires space and can lead to parasitic effects

Method used

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  • Switching module, drive circuit, and system and method for switch module
  • Switching module, drive circuit, and system and method for switch module
  • Switching module, drive circuit, and system and method for switch module

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0061] Some implementations are defined by the following examples:

example 1

[0062] Example 1. A switch module comprising:

[0063] a transistor switch comprising a control terminal, a first load terminal and a second load terminal,

[0064] a short circuit detection circuit configured to detect a short circuit condition between the first load terminal and the second load terminal, and electrically couple the control terminal to the first load terminal in response to detecting the short circuit condition,

[0065] Wherein, power is supplied to the short-circuit detection circuit through the voltage between the control terminal and the first load terminal.

example 2

[0066] Example 2. The switch module of example 1, wherein the switch module related to short circuit detection has only external terminals connected to the first load terminal, the second load terminal and the control terminal. In other words, there may be additional external terminals, but the additional external terminals are not relevant for short circuit detection.

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PUM

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Abstract

The invention provides a switching module, a drive circuit for the switching module, and a system and a method for the switching module. In the implementation, the switching module includes a transistor switch (11) including a control terminal, a first load terminal, and a second load terminal, and a short circuit detection circuit (12) configured to detect a short circuit condition between the first load terminal and the second load terminal, and electrically coupling the control terminal with the first load terminal in response to detecting the short circuit condition. Power is supplied to the short circuit detection circuit by a voltage between the control terminal and the first load terminal.

Description

technical field [0001] The present application relates to a switching module, a driver circuit for a switching module, a system comprising a driver circuit and a switching module, and to a corresponding method. Background technique [0002] Power transistor based switches are used in various applications to switch high current or high voltage, for example to selectively couple a load to a power source, such as a supply voltage. Such a switch can be provided with a single power transistor, or as a combination of transistor and diode (such as an insulated gate bipolar transistor with an antiparallel freewheeling diode, IGBT) or as a combination of several transistors, such as two in a half-bridge configuration. a power transistor. Other combinations are also possible. Power transistors may consist of multiple transistor cells coupled in series or parallel to support high currents or high voltages, such as several amperes. [0003] In many applications, short circuit protect...

Claims

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Application Information

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IPC IPC(8): H03K17/082
CPCH03K17/082H03K17/0822H03K17/0828H03K2217/0027H03K17/08122H03K17/08128
Inventor 丹尼尔·多梅斯
Owner INFINEON TECH AG