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TPS2H160-Q1: Inductive load switch-off energy dissipation

Andrea D'Amaro
Prodigy 50 points
Part Number: TPS2H160-Q1

Hi,

on the datasheet of TPS2H160A-Q1, the switch-off maximum clamping energy is defined just in one condition (single pulse, single channel, Vvs=13.5V, L=8mH, Tj=150°C).

I would like to know how much energy the device is able to dissipate in the following conditions:

  • repetitive pulse (max frequency=500 Hz), single channel, Vvs=36V, L=14mH, Tj=125/150°C;
  • repetitive pulse (max frequency=500 Hz), parallel channels, Vvs=36V, L=8mH, Tj=125/150°C.

An electro-thermal model of the device would be appreciated.

Regards,

Andrea

  • 0
    TI__Genius 16390 points

    Hi Andrea,

    We didn't quantify the multiple pulses, and with PWM, the heat will be the factor needs to take consideration. The best way is to order an EVM and test with the PWM pulses and see how much thermal margin you have.

    For single pulse, the energy curve for TPS2H160 should be around the same as TPS4H160, which I attach the curve below.

    Please let me know if there are any other questions I can clarify.

    www.ti.com/.../slvae30e.pdf

    Regards,

    Yichi