Power module with current routing
View Patent ↗According to an exemplary embodiment, a bondwireless power module includes a common output pad coupling an emitter/anode node of a high side device to a collector/cathode node of a low side device. The bondwireless power module also includes a high side conductive clip connecting a collector of the high side device to a cathode of the high side device, and causing current to traverse through the high side conductive clip to another high side conductive clip in another power module. The bondwireless power module further includes a low side conductive clip connecting an emitter of the low side device to an anode of the low side device, and causing current to traverse through the low side conductive clip to another low side conductive clip in the another power module. The bondwireless power module can be a motor drive inverter module.
1. A power module comprising:
a common output pad coupling an emitter/anode node of a high side device to a collector/cathode node of a low side device;
a high side conductive clip connecting a collector of said high side device to a cathode of said high side device, and causing a high side current to traverse through said high side conductive clip to another power module.
2. The power module of claim 1 wherein said high side current traverses through said high side conductive clip to another high side conductive clip in said another power module.
3. The power module of claim 1 wherein a low side conductive clip connects an emitter of said low side device to an anode of said low side device, and causing a low side current to traverse through said low side conductive clip to said another power module.
4. The power module of claim 3 wherein said power module is a three-phase power inverter module.
5. The power module of claim 1 , wherein said power module is a motor drive inverter module.
6. The power module of claim 1 , wherein said high side device comprises an IGBT in parallel with a diode.
7. The power module of claim 1 , wherein said low side device comprises an IGBT in parallel with a diode.
8. The power module of claim 1 , wherein said common output pad is situated under said high conductive clip.
9. The power module of claim 3 , wherein said common output pad is situated under said low side conductive clip.
10. The power module of claim 1 , wherein said high side conductive clip is part of a high side supply bus.
11. The power module of claim 1 , wherein said high side conductive clip causes said high side current to traverse through said high side conductive clip and over said common output pad.
12. The power module of claim 1 , wherein said common output pad is situated on a direct bonded copper (DBC) substrate.
13. The power module of claim 3 , wherein said low side conductive clip causes said low side current to traverse through said low side conductive clip and over said common output pad.
14. The power module of claim 1 , wherein said high side device and said low side device are connected in a half-bridge between a high side supply bus and a low side supply bus.
15. A three-phase motor drive inverter module comprising:
a U-phase, a V-phase, and a W-phase each including a respective common output pad coupling an emitter/anode node of a high side device to a collector/cathode node of a low side device, a high side conductive clip connecting a collector of said high side device to a cathode of said high side device, and a low side conductive clip connecting an emitter of said low side device to an anode of said low side device;
said high side conductive clip of said U-phase causing a high side current to traverse through said high side conductive clip of said U-phase to said high side conductive clip of said V-phase.
16. The three-phase motor drive inverter module of claim 15 , wherein said respective common output pad of each of said U-phase, a V-phase, and W-phase is situated on a common substrate.
17. The three-phase motor drive inverter module of claim 15 , wherein said high side device comprises an IGBT in parallel with a diode.
18. The three-phase motor drive inverter module of claim 15 , wherein said low side device comprises an IGBT in parallel with a diode.
19. The three-phase motor drive inverter module of claim 15 , wherein said high side device comprises an IGBT in parallel with a diode, said diode being monolithically integrated with said IGBT on a single die.
20. The three-phase motor drive inverter module of claim 15 , wherein said high side device comprises a MOSFET in parallel with a diode, said diode being monolithically integrated with said MOSFET on a single die.