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LM22680: Overload status

Zhihong Huang
Intellectual 1550 points
Part Number: LM22680


Hi Team

I have a question for you:

1. Customers also want to know the risk of lm22680 when the load current of lm22680 is 2.5A which is overload  but does not reach the chip internal condition of overcurrent protection

2. What's the risk for the chip to work when ：>3A Iout > 2.5A and what's the status of the chip ?

Best Regards,

Wesley Huang

Email: wesley-huang@ti.com

  • 0
    TI__Mastermind 34875 points

    Hi Zhihong,

    At heavy load condition, the switching current will be limited to maximum value without freq foldback, so actual output voltage and Vin voltage will define SOA at different freq, pls refer to data sheet Fig 3,4,5. operating outside SOA will cause chip overheated which will result in over temp shutdown or potential damage.