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An intelligent power module adaptive dead time generation circuit and application method

A technology of intelligent power modules and generating circuits, applied in the direction of output power conversion devices, electrical components, etc., can solve problems such as complex implementation, reliability risks, poor control of control algorithms and loop response time, and ensure stability , high reliability and simple overall structure

Active Publication Date: 2018-08-31
金学成
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Problems solved by technology

Or through more complex detection algorithms and control loops to automatically adjust the dead time of the output, this method is often complicated to implement, and the control algorithm and loop response time are not well controlled, which will bring more reliability risks

Method used

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  • An intelligent power module adaptive dead time generation circuit and application method
  • An intelligent power module adaptive dead time generation circuit and application method
  • An intelligent power module adaptive dead time generation circuit and application method

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Embodiment Construction

[0029] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0030] like image 3 As shown, an intelligent power module adaptive dead time DT generation circuit designed in the present invention is used for performing adaptive control of the dead time DT for the high-side input signal HIN and the low-side input signal LIN to obtain the high-side output signal HO and the low-side output signal LO avoid the simultaneous operation of the high-side MOSFET M1 and the low-side MOSFET M2 in the intelligent power module. A unilateral delay generation circuit, a second unilateral delay generation circuit, a first dead time DT comparison and generation circuit, and a second dead time DT comparison and generation circuit; wherein, the delay time of the first unilateral delay generation circuit is the same as the second The delay times of the two unilateral delay generation circuits are equa...

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Abstract

The invention relates to an intelligent power module adaptive dead-time generation circuit. The intelligent power module adaptive dead-time generation circuit comprises a through protection circuit, a first unilateral delay generation circuit, a second lateral delay generation circuit, a first dead-time comparison and generation circuit and a second dead-time comparison and generation circuit. According to the technical scheme of the invention, the above modules are connected to form the intelligent power module adaptive dead-time generation circuit; correspondingly, the invention also relates to an application method of the intelligent power module adaptive dead-time generation circuit, which realizes the intelligent control and adjustment of the dead time between signals, effectively avoids the situation that a high side MOSFET (Metal Oxide Semiconductor Field Effect Transistor) M1 and a low side MOSFET M2 in the intelligent power module work simultaneously, and guarantees the working stability of each module in the applied intelligent power module.

Description

technical field [0001] The invention relates to an adaptive dead-time generation circuit for an intelligent power module and an application method thereof, and belongs to the field of grid drive circuit design in an intelligent power module. Background technique [0002] An intelligent power module is a power drive product that integrates a power switching device (IGBT or MOSFET) and a gate drive circuit (HVIC), and also integrates various protection functions. Compared with traditional discrete solutions, intelligent power modules have won an increasing market due to their advantages of high integration and high reliability, especially in motor drives, intelligent switching power supplies, and automotive electronics. At present, the domestic market of such products is basically occupied by foreign products, so the research and design of intelligent power modules is of practical significance to realize the localization of such products and promote the development of the indu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M1/08H02M1/38
Inventor 金学成潘建斌迟明
Owner 金学成
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