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Original question:

TPS53632G: I2C

TPS53632G: TPS53632G dc-dc

user5015634
Intellectual 260 points
Part Number: TPS53632G
Other Parts Discussed in Thread: UCC27512, LMG1205, INA170

Hi !

I am  building a GaN FET based half-bridge converter with the controller TPS53632G. The parameters are:

1. Input Voltage: Vin=36-75V  DC

2. Output Voltage: Vout=28V

3. Output Current : Iout=10A.

4. Frequency: fsw=1 MHz

The driver on primary is LMG1205, and secondary is UCC27512. The current is sampled using the resistor and then amplified by INA 170 to the CSPx and CSNx pins of the controller, the gain of the INA170 is 1. Is it

a reasonable plan? If not,is there a more suitable solution to meet my parameters?

Now I'm running tests, but the PWM behaviour is not correct. Does it have anything to do with loop compensation? How to design loop compensation?

Regards,

Lin

  • 0
    TI__Mastermind 24075 points
    Hi Lin,

    I remember we had some discussion before, sorry to hear your design is still not working.
    TPS53632G was designed for low Vout application. We did not tested it at high Vout application.

    My product line doesn't have other recommended solution.
    Can you use Webench to search other solution?

    Thanks
    Qian