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TPS2596: Highside protection for PWM generator

Kei Kuwahara
Expert 4900 points
Part Number: TPS2596

Hello team,

Can I use TPS2596 like a high side switch on the diagram below?
The app note: Driving PWM Loads with TI High-Side Switches says high side switch can be used as high side protection for PWM generator (Low side Driver).

The PWM frequency would be 150kHz, so the load for TPS2596 would be 150kHz pulse with 200mA max.

Also, what are the general differences between efuse and high side switch? How do you chose to use either one of them in different conditions?


Best Regards,
Kei Kuwahara

  • 0
    TI__Genius 9545 points

    Hi Kuwahara San,

    I am busy with some bench experiments today. I will try to answer by EOD but please expect answer by tomorrow EOD. 

    I apologies for delay.

    Best Regards,
    Arush

  • +1 in reply to Arush Gupta
    TI__Genius 9545 points

    Hi Kuwahara San,

    TPS2596 cannot handle 150KHz frequency PWM. 150KHz will have around 6us time period and the minimum rise time is around 70us. 

     

    Regarding your question for HSS vs Efuse

    • Efuse are used towards the input side of power path and HSS near the load (output side)
    • HSS have better inductive load handling capabilities. 
    • HSS have better inrush current capabilities (important in your application)

    In general, both efuse and HSS are switches but efuse are tailored towards non-automotive applications and HSS are tailored for automotive applications.

    Can you please create another thread with HSS and HSSC recommendations for your applications.

    I am attaching an application report containing one explanation for efuse and HSS/HSSC. Basics of Power Switches (Rev. A) (ti.com)

    Please click resolved if this answers your query.

    Best Regards,
    Arush