TPS1H200A-Q1: pull-up resistor size for Auto-retry

Hung Ching Hsu

Part Number: TPS1H200A-Q1
Other Parts Discussed in Thread: TINA-TI

Hi Team

My customer wants to use TPS1H200A-Q1 for auto-retry mode with Vs=24V and DIAG_EN=LOW.

The customer uses model file "TPS1H200_Q1_TRANS.lib" downloaded from TI.com.

Datasheet says "When in auto-retry mode, the DELAY pin is connected to the VS pin through a 100-kΩ resistor", so the customer drew the circuit as below.

But the message "operation point not found" was showed after executing "calculate nodal voltage"

After changing R1 to around 27-kΩ, the DEL pin showed 2.8V, which i think it means auto-retry function works normally.

Is there anything wrong with the model file or the circuit if "100-kΩ resistor" is correct to use?

And please tell me if there's anything I should take care about when doing the simulation.

over 5 years ago

0 Anthony P Pham over 5 years ago

TI__Mastermind 23410 points

Hi Hung Ching Tsu,

Would you be able to send the .lib file that was used? I am also seeing the same issue and will attempt to get this fixed or see if this is an issue but would just like to receive the issue file to ensure the problem gets fixed in this situation.