Over-current or short-circuit state detection circuit of insulated gate bipolar transistor (IGBT)
A short-circuit state and detection circuit technology, applied in the circuit field, can solve problems such as inability to detect DC current, large current signal noise, and different tube voltage drop characteristics, and achieve the effects of fast protection speed, small delay, and strong circuit versatility
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment Construction
[0028] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.
[0029] Such as figure 2 As shown, the IGBT overcurrent or short circuit state detection circuit of the present invention includes a shunt resistor R6 ( figure 2 not shown), capacitor C1, transistor Q1, resistor R1, resistor R2 and resistor R3; wherein, the shunt resistor R6 is a milliohm-level power resistor; one end of the shunt resistor R6 is electrically connected to the negative pole of the power voltage source at the node A, namely the I_SHUNT-node, the other end of the shunt resistor R6 is electrically connected to the emitter of the lower bridge arm of the power conversion circuit and the signal ground terminal of the IGBT drive circuit to node B, namely the I_SHUNT+ node; the base of the transistor Q1 and ...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com