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Q: TPS72015 turn on VIN/VBIAS sequence by 741196
a question regarding tps72015 :
We have IN = 1.8V and BIAS = 3.3V
We can’t guarantee the power sequence on turn on and shutdown - do we need any protection ?
Amit Benjamin,Analog & Embedded ProcessingField Application Engineer,Texas Instruments, Israel,Cell +972 54 6663791
The only comment I found in the DS says that Vin shouldn't exceed Vbias.
A: Re: Motorola - TPS72015 turn on VIN/VBIAS sequence by 10449
You must ensure that the voltage on the TPS72015 IN pin never goes higher than the voltage on the BIAS pin. I suggest connecting a schottky diode between IN and BIAS with the anode connected to IN. This prevents IN from going higher than BIAS at both turn on and turn off.
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