TPS62162-Q1: The output state when EN pin input working in the range of 0.3V~0.9V

Jessica Wu74

Part Number: TPS62162-Q1
Other Parts Discussed in Thread: TPS62162

Hi team,

I have a question about TPS62162 EN input. As the d/s write, when EN input<0.3V,it will not work, when EN input>0.9V,it will enable. I want to ask if we have done some test about the output state when EN input at the range of 0.3V~0.9V. (some test like when EN input=(0.3~0.9),how many times output high, how many times output low) .

Thank you in advance.

Best regards

Jessica

over 5 years ago

0 Juergen over 5 years ago

TI__Expert 5415 points

Hi Jessica,

as you already discovered, this is undefined. A reliable circuit design needs to consider the min and max thresholds.

If you would have data about the probability of having the device enabled in the undefined voltage region, what would you do with that?

Regards,
Juergen

0 Jessica Wu74 over 5 years ago in reply to Juergen

TI__Expert 3450 points

Hi Juergen,

Thank you for your quickly reply, because i have a customer need the output stage being low when the EN input voltage is lower than 0.45V .So to make this clear for them, I want to know if we have some test data that can give them.

Thanks & Best regards

Jessica

0 Juergen over 5 years ago in reply to Jessica Wu74

TI__Expert 5415 points

There may be many devices which have a higher threshold at typical conditions. But relying on that will not result in getting a reliable application, reliable in mass production and in operation at different supply voltage and temperature conditions.
So I strongly recommend to fix the design in a way to get a clear EN signal below 0.3V for disabling the device.

0 Jessica Wu74 over 5 years ago in reply to Juergen

TI__Expert 3450 points

Hi Juergen,

Got it.Thank you so much for your reply.

Best regards
Jessica

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TPS62162-Q1: The output state when EN pin input working in the range of 0.3V~0.9V