TPS4810-Q1: PSPICE for TI - There is no voltage in IMON pin

Andres Gomez

Part Number: TPS4810-Q1

Tool/software:

Hi.

I am simulating the circuit to check that is working before implementing in our products; however, I am struggling to see a voltage in IMON pin. Additionally, I noticed that the IC doesn't try to power up after the short-circuit is removed.

I am creating a short-circuit with this switch.

6 months ago

0 Andres Gomez 6 months ago

Intellectual 420 points

Copy of TPS4811-Q1_Design_Calculator_RevB.xlsm

Here is the specs

0 Sarah Raines 6 months ago in reply to Andres Gomez

TI__Expert 6340 points

Hi Andres,

Can you provide a full schematic for the TPS4810 part?
Assuming you are using the t-retry option after a short circuit event the voltage needs to exceed V_TMR_LOW (0.2V) in order to actually turn on, after 32 cycles of retry.

Thanks,

Sarah

0 Andres Gomez 6 months ago in reply to Sarah Raines

Intellectual 420 points

Here is the schematic

0 Sarah Raines 6 months ago in reply to Andres Gomez

TI__Expert 6340 points

Hi Andres,

I dont see anything obviously wrong here. the next step will be to test this on EVM as I cannot review the PSPICE model itself.

Thanks,

Sarah

Power management

Power management forum

TPS4810-Q1: PSPICE for TI - There is no voltage in IMON pin