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Part Number: TPS73201-EP
I got a feedback from customer talking about overcurrent limit of TPS73201-EP.
In the datasheet, there is a range of it, which is 250mA ~ 600mA.
You can see the waveform captured by customer, it is limited by 634mA which is over spec.
Can you explain how does it happen? It is a 5V to 3.3V design.
Thanks a lot.
Best regards, Cage.
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In reply to Kyle Rakos:
It is tested by EVM. As below picture.
And the Vout was 3.3V until customer applied a load on it.
And Vout went down to 0V when the current increased to 634mA.
Ch1 is Vout, and Ch4 is Iout.
In reply to Cage Chen:
Here is the waveform at beginning of load increasing.
For your reference.
CH1: Vout, CH4: Iout.
Customer use a current probe to measure the current after capacitors.
It is a 3.3V to 3V design, which means the current limit should at 3V*0.9=2.7V.
But from the below waveform, you can see the Vout didn't drop to 0 immediately when Iout is over 600mA.
The current limit behavior of TPS73201-EP is latch or what kind of action when TPS73201-EP is at current limit condition?
ps, I will also ask customer to remove capacitor to see if it improves or not.
ps, if it is possible you can also take an EVM to duplicate it?
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