Method for reworkable packaging of high speed, low electrical parasitic power electronics modules through gate drive integration
View Patent ↗A multichip power module directly connecting the busboard to a printed-circuit board that is attached to the power substrate enabling extremely low loop inductance for extreme environments such as high temperature operation. Wire bond interconnections are taught from the power die directly to the busboard further enabling enable low parasitic interconnections. Integration of on-board high frequency bus capacitors provide extremely low loop inductance. An extreme environment gate driver board allows close physical proximity of gate driver and power stage to reduce overall volume and reduce impedance in the control circuit. Parallel spring-loaded pin gate driver PCB connections allows a reliable and reworkable power module to gate driver interconnections.
1. A multi chip power module apparatus comprising:
a baseplate;
a power substrate soldered directly to the baseplate;
at least one power die soldered to the power substrate; and
an integrated multilayer busboard soldered directly to the power substrate.
2. The apparatus of claim 1 , further comprising:
high frequency capacitors soldered to the integrated busboard.
3. The apparatus of claim 1 , further comprising:
a gate driver board; and
pogo pin gate driver interconnections electrically connecting the busboard to the gate driver board.
4. A multi chip power module apparatus comprising:
a power substrate;
an integrated multilayer busboard soldered directly to the power substrate;
at least one power die; and
a wirebond electrically connecting the at least one power die to the integrated multilayer busboard.