TPS6594-Q1: Failure counter reset

xiaoqiang shen

Prodigy 10 points

Part Number: TPS6594-Q1

We observed the IC will permantly shut off the output if under voltage happens for several times.

Even, we set enable = 0;

I don't need this function. Do we have any way to disable it by register or OTP?

over 2 years ago

0 Daniel W over 2 years ago

TI__Genius 13216 points

Hi,

This mechanism is not able to be shut off. When the recovery counter reaches 15 the pmic will stay in a safe mode and will not power up. However, a POR (<2.7V VCCA) resets the recovery counter. I would recommend increasing input capacitance to prevent under voltage on the pmic vcca.

Thanks,

Daniel W

0 xiaoqiang shen over 2 years ago in reply to Daniel W

Prodigy 10 points

what's the design logic for safe mode?

From application scenario, we observed the power supply doesn't recover even if input voltage return back to normal input range.

This is not good for vehicle application.

0 Daniel W over 2 years ago in reply to xiaoqiang shen

TI__Genius 13216 points

Hi,

After reaching 15 restarts, the pmic will be stuck in safe recovery until a POR (VCCA <2.7V)

Thanks,

Daniel W

Power management

Power management forum

TPS6594-Q1: Failure counter reset