igbt driver

shahid palasra

Other Parts Discussed in Thread: UCC27531

I am new to igbt. We are designing ckt have 6 igbt but in need driver ic that should not need 6 isolated power supply but only one power and also the output must be isolated from each other

over 12 years ago

0 Ali Mansoori over 12 years ago

Intellectual 385 points

If you go with bootstrap supply you don't need isolated supply.(google "bootstrap igbt driving")

there are some integrated hex IGBT drivers like IR2130,IR2137,... with everything you need for six igbt driving.

Note that these are non isolated drivers and their GND is common with the power GND.

0 Ramanan Natarajan over 12 years ago

TI__Intellectual 1050 points

Please have a look at:

http://www.ti.com/product/iso5500

If you are using discrete opto-isolators or digital isolators, then you can use TI's UCC27531 device as a companion driver IC.

http://www.ti.com/product/ucc27531

You can use 1 power supply to provide VCC/VDD bias to the driver, but you will need 3 boot-strap circuits to provide power to the 3 high-side IGBTs of each phase.

Power management

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igbt driver