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PTH12040W: De-rating Consideration for Application of the PTH12040W power module at 3.3V@60A

Shamsad P K
Prodigy 90 points
Part Number: PTH12040W
Other Parts Discussed in Thread: PTH08T250W

Hi,

I had a requirement of maximum output power/current of 3.3V@60A  and a typical requirement of 3.3V@50A. I am planned to use  PTH12040W  power module for the application.

Input Voltage shall be +12V +/-0.5V DC. Kindly comment  the module withstand ability over the power requirement of 3.3V@60A.

Suggest   thermal considerations need to be taken care  for the operation.

Regards,

Shamsad P K

  • 0
    TI__Mastermind 28020 points

    This device has been designed and characterized for operation up to 50A. It is not recommended to operate this device over 50A. Please consider paralleling 2 PTH08T250W device for currents above 50A.

  • 0 in reply to J Arrigo
    Prodigy 90 points

    I agree with your suggestion. But, I have space constraints for paralleling two modules hence no other go.

    I would like to know the expecting failure mode for current over rated current of 50A. 

    As per my understanding the module have inbuilt over current, over temperature cut-off protection. 

    Kindly help me to understand this.

  • 0 in reply to Shamsad P K
    TI__Mastermind 28020 points

    Yes, the device has over current and over temperature protection. However, the device is not designed to be operated up to these limits. These protections are in place to protect against a short circuit or extreme temperature condition. Operation above rated current and temperatures is not guaranteed or recommended.