TPS1663: TPS16630RGET FLTpin's behavior at start up

Tetsusei Kan

Part Number: TPS1663

Hi,team.

Is there a possibility that the #FLT pin of TPS16630RGET will output an L signal when the power is turned on?

In our circuit, the #FLT pin is connected to the CPU and pulled up.
When the CPU detects the L signal, it performs error processing.
Since the CPU starts up first and powers on the TPS16630RGET, if the TPS16630RGET outputs an L signal for a moment during startup, it will be recognized as an error.

thanks.

over 6 years ago

0 Lokesh Ghulyani over 6 years ago

TI__Expert 8630 points

Hello,

The Fault remain below if Input voltage is less than UVLO set-point .

See below waveform for FLT output when VIN is rising on startup. CH3 = VIN, CH2 = FLTb, CH4= VOUT

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TPS1663: TPS16630RGET FLTpin's behavior at start up