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Recommendation for gate driver

Lakshmi R21
Prodigy 230 points
Other Parts Discussed in Thread: UCC27714, UCC27712, UCC21222, UCC21520

Hi,

I am designing a phase shifted full bridge dc-dc converter.

Input voltage: 400VDC

Output voltage: 650VDC

Power: 3500W

  • I need recommendations for gate driver that can be used to drive 600V MOSFETs for this dc dc converter. The PWM signals come from Max10 FPGA. Please include recommendations from non-isolated (bootstrap type) and isolated gate driver families.
  • It would be great if design recommendations for phase shifted converter with the above ratings can also be provided.

Thanks,

Lakshmi

  • 0
    TI__Mastermind 21245 points
    Hello Lakshmi,
    Thank your for your interest in TI gate drivers. I can recommend drivers for 600V MOSFETs to review for the phase shifted full bridge, but the best driver will depend on details on the design operating parameters and power device selection. Such as expected operating frequency and MOSFET parameters such as gate charge. For more details on recommendations for the phase shifted full bridge designs, you can review TIDA reference designs on ti.com, or post another thread requesting controller recommendations as the High Voltage Controller group may be able to assist with overall design recommendations.
    For the non isolated drivers the UCC27712 620V half bridge driver, and UCC27714 half bridge driver can drive a half bridge MOSFET configuration up to 600V switch node operation. These drivers are used in full bridge, half bridge and LLC applications with operating frequencies 300kHz or less. The gate drive strength of the UCC27712 is 1.8A source and 2.8A sink, and the UCC27714 drive strength is 4A source and sink.
    For higher frequency operation and/or lower propagation delays the isolated drivers will be a better choice as the delay times are much lower. If you need reinforced isolation the UCC21520 is a dual channel isolated driver with 4A source and 6A sink drive strength. The UCC21222 is also an isolated two channel driver with basic isolation in a smaller package than the UCC21520 also with 4A/6A drive strength. If functional isolation is all that is required, the UCC21225 is an isolated driver in a smaller LGA package but the pin spacing should be reviewed to see if it is adequate for your application.
    Let us know if this addresses your questions, or you can post additional questions on this thread.

    Regards,
    Richard Herring