Power integration module for air conditioner and manufacturing method of power integration module

Abstract

The invention discloses a power integration module for an air conditioner and a manufacturing method of the power integration module. The power integration module comprises a substrate; a first to third upper bridge arm switch tubes and a first to third lower bridge arm switch tubes, which are all arranged on the substrate; a first to three high and low voltage drive tubes which are disposed on the substrate and are used for respectively driving the first to third upper and lower bridge arm switch tubes to operate, wherein the first high-voltage driving tube, the second high-voltage driving tube and the third high-voltage driving tube are achieved through the BCD or SOI process of the first voltage, and the first, second and third low-voltage driving tubes are achieved through the BCD or Bipolar process of the second voltage. The power integration module is configured on the corresponding switching tubes through the independent high-voltage driving tubes and low-voltage driving tubes,so as to enable the paths from the high-voltage driving tubes and low-voltage driving tubes to the grid electrodes of the corresponding switching tubes to be consistent, thereby guaranteeing the consistency of the dynamic characteristics of the switching tubes effectively, greatly saving the area of circuit wiring, greatly reducing the area of a circuit substrate of the intelligent power module, and reducing the cost.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to a power integration module for an air conditioner and a manufacturing method of the power integration module. Background technique [0002] Power integrated module, or IPM (Intelligent Power Module), is a power drive product that combines power electronics and integrated circuit technology. The power integrated module wins more and more markets with its advantages of high integration and high reliability. It is especially suitable for frequency converters and various inverter power supplies for driving motors. , An ideal power electronic device for frequency conversion appliances. [0003] At present, the power integrated module 100 generally adopts such as Figure 1A The circuit structure shown mainly includes: first to seventh IGBT (Insulated Gate Bipolar Transistor, insulated gate bipolar transistor) 121-127, first to seventh FRD (Fast Recovery Diode, fast recovery d...

AI Technical Summary

Problems solved by technology

from Figure 1B It can be seen that the current intelligent power module for inverter air conditioners uses one HVIC tube to control the first to seventh IGBTs 121-127. Although the addition of the PFC circuit meets the energy efficiency requirements, the control IC (that is, the HVIC tube 101) to the IGBT The wiring is very long, and it is easy to cause interference between the lines, which makes it difficult to increase the operating frequency, and the inductance of the external inductor is generally designed to be large, which leads to assembly difficulties and increases the cost.

Moreover, due to the inconsistent distances from the HVIC tube to the six IGBT tubes of U, V, and W phases, it is difficult to control the signal transmission consistency of the six IGBT tubes, and the line spacing of the seventh IGBT tube 127 controlled by the HVIC tube 101 is relatively long , which also causes the delay and the rising and falling edges of the seventh IGBT tube 127 to be slow when switching at high speed

In addition, too much circuit wiring on the substrate will inevitably increase the area of ​​the substrate, resulting in an increase in the area of ​​the current smart power module, increasing the manufacturing cost of the smart power module, and affecting the popularity of the smart power module in the low-end field. In addition, due to The circuit wiring area needs to be reserved, resulting in a large distance between components, and a long bonding wire connecting components through metal wires, which affects the reliability of the bonding wire, and the production off-line rate is high

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