CN-224234072-U - Intelligent power module

CN224234072UCN 224234072 UCN224234072 UCN 224234072UCN-224234072-U

Abstract

The intelligent power module is internally provided with a first substrate, a second substrate, a magnetic coupling isolation driving circuit module and a power circuit module, wherein the magnetic coupling isolation driving circuit module is arranged on the first substrate, the power circuit module is arranged on the second substrate, the first substrate is electrically connected with the power circuit module, and the magnetic coupling isolation driving circuit module is used for receiving external control signals and sending internal control signals corresponding to the external control signals to the power circuit module. Through with keep apart drive circuit integration in intelligent power module for can satisfy the isolation demand of electrical safety, promote the system integration level, reduce whole parasitic inductance, simultaneously, set up isolation drive circuit on first base plate, make can reduce the setting of intelligent power module internal lead wire, reduced common mode interference, improved intelligent power module's reliability, on this basis, can realize the setting of higher voltage, frequency.

Inventors

LIU ZILING
HONG GUANGJIE
LI PENGZHAO

Assignees

珠海格力电子元器件有限公司

Dates

Publication Date: 20260512
Application Date: 20250529

Claims (10)

1. The intelligent power module is characterized in that a first substrate, a second substrate, a magnetic coupling isolation driving circuit module and a power circuit module are arranged in the intelligent power module, wherein the magnetic coupling isolation driving circuit module is arranged on the first substrate, the power circuit module is arranged on the second substrate, and the first substrate is electrically connected with the power circuit module; The magnetic coupling isolation driving circuit module is used for receiving an external control signal, performing magnetic coupling isolation on a driving side receiving the external control signal and a power side where the power circuit module is located, and then sending an internal control signal corresponding to the external control signal to the power circuit module.
2. The intelligent power module according to claim 1, wherein the first substrate is a printed circuit board and the second substrate is a ceramic copper-clad plate.
3. The intelligent power module according to claim 1, wherein the magnetically coupled isolation driving circuit module comprises an isolation unit and a signal output unit, the power circuit module comprises a plurality of power devices, the signal output unit is connected with the power devices in a one-to-one correspondence manner, wherein: And a group of output ends of the isolation units are correspondingly connected with one signal output unit.
4. The intelligent power module according to claim 3, wherein the isolation unit comprises a processing chip and a magnetic coupling subunit, wherein the magnetic coupling subunit comprises a plurality of magnetic coupling components, and the output end of the magnetic coupling components is used as the output end of the isolation unit; The output ends of the processing chips are respectively connected with the input ends of the magnetic coupling components in a one-to-one correspondence manner, wherein: The processing chip is used for receiving an external control signal and controlling the coupling state of the corresponding magnetic coupling assembly according to the external control signal so that the magnetic coupling assembly outputs the corresponding internal control signal.
5. The intelligent power module according to claim 4, wherein the magnetic coupling assembly comprises a transformer and a drive output chip, wherein: The primary side of the transformer is connected with a group of output ends of the processing chip, the secondary side of the transformer is connected with the input end of the driving output chip, and the output end of the driving output chip is used as the output end of the magnetic coupling component.
6. The intelligent power module according to claim 5, wherein the transformer comprises a first coil and a second coil, wherein: The transformer is arranged on the driving output chip, the second coil is connected with the input end of the driving output chip through a silicon through hole, and the first coil is electrically connected with the output end of the processing chip.
7. The intelligent power module according to claim 5, wherein the transformer comprises a first coil and a second coil, wherein: The transformer is arranged on the first substrate, the first coil is electrically connected with the output end of the processing chip, and the second coil is electrically connected with the input end of the driving output chip.
8. The intelligent power module of any one of claims 5-6, wherein the transformer comprises a plastic package, an insulating material, a first coil, and a second coil, wherein: The first coil and the second coil are arranged in the plastic package body, the insulating material is filled in the plastic package body, the second coil is led out of a first surface of the plastic package body to be electrically connected with an input end of the driving output chip, the first coil is led out of a second surface of the plastic package body to be electrically connected with an output end of the processing chip through a bonding wire, and the first surface and the second surface are two opposite surfaces on the plastic package body.
9. The intelligent power module according to claim 3, wherein the isolation unit comprises an upper pipe output terminal comprising an upper pipe high voltage terminal and an upper pipe ground terminal, the signal output unit comprises a negative voltage driving subunit comprising a first capacitor, a second capacitor, a first zener diode, and a third resistor, wherein: The positive pole of zener diode with the ground of isolation unit is connected, zener diode's negative pole with power device's source connection, zener diode's negative pole still with the first end of third resistance is connected, the second end of third resistance with the high-voltage end of isolation unit is connected, first electric capacity with the third resistance is parallelly connected, the second electric capacity with zener diode is parallelly connected.
10. The intelligent power module according to claim 3, wherein the isolation unit comprises an upper pipe output end comprising an upper pipe high voltage end and an upper pipe ground end, the magnetically coupled isolation driving circuit module further comprises a bootstrap unit comprising a fourth resistor, a second diode and a third capacitor, wherein: The first end of the fourth resistor is connected with the driving power supply, the second end of the fourth resistor is connected with the positive electrode of the second diode, the negative electrode of the second diode is connected with the upper pipe high-voltage end of the isolation unit, the first end of the third capacitor is connected with the upper pipe high-voltage end of the isolation unit, and the second end of the third capacitor is connected with the upper pipe ground end of the isolation unit.

Description

Intelligent power module Technical Field The utility model relates to the field of electronic devices, in particular to an intelligent power module. Background IPM (INTELLIGENT POWER MOUDLE, intelligent power module) is a multi-chip architecture module that packages the power device chip and the protection driver chip or circuit into the same insulator. With the development of power semiconductor technology, the power that IPM can carry is gradually increasing. The voltage and switching frequency that conventional silicon-based chips can withstand have failed to meet the ever-increasing demands. With the technical development of the third generation semiconductor material silicon carbide capable of bearing higher voltage and higher frequency, the silicon carbide discrete device and the integrated power module are already used in the fields of household appliances, new energy automobiles and the like. However, for IPMs that integrate drive and protection functions into the same module, common mode interference and lack of electrical isolation are reliability issues that limit the implementation of IPMs for higher voltage, higher frequency specifications. Disclosure of utility model The utility model mainly aims to provide an intelligent power module, which aims to solve the problem that the IPM in the prior art has reliability so that specifications of higher voltage and higher frequency cannot be applied. In order to achieve the above purpose, the utility model provides an intelligent power module, wherein a first substrate, a second substrate, a magnetic coupling isolation driving circuit module and a power circuit module are arranged in the intelligent power module, the magnetic coupling isolation driving circuit module is arranged on the first substrate, the power circuit module is arranged on the second substrate, and the first substrate is electrically connected with the power circuit module, wherein the first substrate is electrically connected with the power circuit module; The magnetic coupling isolation driving circuit module is used for receiving an external control signal, performing magnetic coupling isolation on a driving side receiving the external control signal and a power side where the power circuit module is located, and then sending an internal control signal corresponding to the external control signal to the power circuit module. Optionally, the first substrate is a printed circuit board, and the second substrate is a ceramic copper-clad plate. Optionally, the magnetic coupling isolation driving circuit module comprises an isolation unit and a signal output unit, the power circuit module comprises a plurality of power devices, and the signal output unit is connected with the power devices in a one-to-one correspondence manner, wherein: And a group of output ends of the isolation units are correspondingly connected with one signal output unit. Optionally, the isolation unit comprises a processing chip and a magnetic coupling subunit, wherein the magnetic coupling subunit comprises a plurality of magnetic coupling components, and the output end of the magnetic coupling components is used as the output end of the isolation unit; The output ends of the processing chips are respectively connected with the input ends of the magnetic coupling components in a one-to-one correspondence manner, wherein: The processing chip is used for receiving an external control signal and controlling the coupling state of the corresponding magnetic coupling assembly according to the external control signal so that the magnetic coupling assembly outputs the corresponding internal control signal. Optionally, the magnetic coupling assembly comprises a transformer and a driving output chip, wherein: The primary side of the transformer is connected with a group of output ends of the processing chip, the secondary side of the transformer is connected with the input end of the driving output chip, and the output end of the driving output chip is used as the output end of the magnetic coupling component. Optionally, the transformer comprises a first coil and a second coil, wherein: The transformer is arranged on the driving output chip, the second coil is connected with the input end of the driving output chip through a silicon through hole, and the first coil is electrically connected with the output end of the processing chip. Optionally, the transformer comprises a first coil and a second coil, wherein: The transformer is arranged on the first substrate, the first coil is electrically connected with the output end of the processing chip, and the second coil is electrically connected with the input end of the driving output chip. Optionally, the transformer comprises a plastic package body, an insulating material, a first coil and a second coil, wherein: The first coil and the second coil are arranged in the plastic package body, the insulating material is filled in the plastic package body, the second coil is led