Intelligent power module with reinforced sampling anti-electrostatic protection

An intelligent power module, anti-static technology, applied in the direction of output power conversion devices, electrical components, etc., can solve problems such as overheating and burning, the intelligent power module 100 is easily threatened by static electricity, and fires

Inactive Publication Date: 2016-07-20
SHENZHEN XIN YUPENG ELECTRONICS TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0050] It can be seen that the emitters of the IGBT tube 124, the IGBT tube 125, the IGBT tube 126, and the IGBT tube 127 of the current intelligent power module 100 are directly used as the pins of the intelligent power module 100. During the assembly process of the power module 100, the smart power module 100 is easily threatened by static electricity due to touching the operating table, touching the body parts of workers, etc. If these static electricity appear on the UN, VN, WN, -VP pins between the COM pin and the IGBT tube 124, the IGBT tube 125, the IGBT tube 126, and the IGBT tube 127. Therefore, the design of the current intelligent power module 100 has the defect of being damaged by static electricity during installation.
[0051] In f

Method used

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  • Intelligent power module with reinforced sampling anti-electrostatic protection
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  • Intelligent power module with reinforced sampling anti-electrostatic protection

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Embodiment Construction

[0064] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0065] This embodiment provides an intelligent power module with sampling anti-static enhanced protection. The structure diagram of the intelligent power module 1100 is as follows figure 2 shown.

[0066] The VCC terminal of the HVIC tube 1101 serves as the positive terminal VDD of the power supply in the low-voltage area of ​​the intelligent power module 1100, and VDD is generally 15V;

[0067] There is also a bootstrap circuit structure inside the HVIC tube 1101 as follows:

[0068] The VCC terminal is connected to the anodes of the bootstrap diode 1102, the bootstrap diode 1103, and the bootstrap diode 1104;

[0069] The cathode of the bootstrap diode 1102 is connected to the VB1 of the HVIC tube 1101;

[0070] The cathode of the bootstrap diode 1103 is connected to the VB2 of the HVIC tube 1101;

[0071] The cathode of the bootstrap ...

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Abstract

The invention discloses an intelligent power module with reinforced sampling anti-electrostatic protection. The intelligent power module comprises a plurality of IGBTs and sampling circuits, wherein the IGBTs are connected with an HVIC tube; emitters of the IGBTs are connected with anodes of FRD tubes and connected with input/output ends of the sampling circuits; fifth input/output ends of the sampling circuits are taken as an N1 end of the intelligent power module; sixth input/output ends of the sampling circuits are taken as an N2 end of the intelligent power module; in addition, four analog switches are arranged in inside circuits of the sampling circuits; and fixed ends of the analog switches are respectively connected with corresponding input/output ends of the sampling circuits. In a non-electrified state, the power supply of the intelligent power module is subjected to electrostatic protection, the risk of electrostatic breakdown can be effectively prevented, and particularly the risk of electrostatic damage in the assembling process on a production line can be also prevented.

Description

technical field [0001] The invention relates to the design field of intelligent power modules, in particular to the design of protection circuits and electrostatic suppression circuits of intelligent power modules. Background technique [0002] Intelligent Power Module, or IPM (Intelligent Power Module), is a power drive product that combines power electronics and integrated circuit technology. The intelligent power module integrates the power switching device and the high-voltage driving circuit, and has built-in fault detection circuits such as overvoltage, overcurrent and overheating. On the one hand, the intelligent power module receives the control signal from the MCU to drive the subsequent circuit to work, and on the other hand, it sends the system status detection signal back to the MCU. Compared with traditional discrete solutions, intelligent power modules have won an increasing market due to their advantages of high integration and high reliability. They are espe...

Claims

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Application Information

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IPC IPC(8): H02M1/32
CPCH02M1/32
Inventor 尹曦曦
Owner SHENZHEN XIN YUPENG ELECTRONICS TECH CO LTD
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