UCC27611: Can this gate driver be used to drive a HS device?

Jamie Shaffer1

Part Number: UCC27611

I would like to drive a GaN Half-bridge with a 12V driver, but the GaN devices can only withstand up to 6V on their gates. The UCC27611 appears to be a good level shifter for operation of a single 5V gate GaN device with a 12V gate signal. If I were to power it with a large bootstrap capacitor, are there any reasons I should NOT use this device to drive a high-side FET?

over 3 years ago

0 Andy Robles over 3 years ago

TI__Genius 13760 points

Hi,

Thank you for reaching out to E2E!

Our expert is currently out of office, but will get back to you within the next couple days. Thank you for your patience.

Best regards,

Andy Robles

+1 Leslie Marquez over 3 years ago in reply to Andy Robles

TI__Genius 9401 points

Hi,

Thank you for your question. This application note describes considerations and different methods for driving a high side switch using a low side gate driver. An additional consideration when using a GaN driver is to make sure not to exceed the max voltages at the output and VREF pins, which are typically rated around 5 to 6V.

https://www.ti.com/lit/an/slua669a/slua669a.pdf?ts=1642567967883

Best regards,

Leslie

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UCC27611: Can this gate driver be used to drive a HS device?