DRV602: EN threshold

Jeff YANG

Part Number: DRV602

Hi,

May I know the EN VIH minimum and maximum value?

In datasheet, only show the typical, my customer have meet enable voltage close to the VIH typ., some device can't normal enable.

They want to know the minimum and maximum to modify design and make sure can turn on DRV602.

Thanks!

Jeff

over 2 years ago

0 Ivan Salazar over 2 years ago

TI__Guru** 100555 points

Hi Jeff,

I was able to find this in some old e2e threads:

The design simulation shows the following min and max over process variation -

MIN TYP MAX

VIL 38% 40% 45% (VDD)

VIH 57% 60% 65% (VDD)

However, as you know, we do not guarantee this since it is not spec'ed in the DS.

Best regards,
-Ivan Salazar
Applications Engineer

0 Jeff YANG over 2 years ago in reply to Ivan Salazar

Genius 5345 points

Hi Ivan,

My customer used GPIO provide ~3.15V, but some chip meet can't normal enable,

it over typ. 5 * 0.6 = 3V, but still have 10% fail rate.

Is it normal?

Or should I create FA case?

Thanks!

0 Ivan Salazar over 2 years ago in reply to Jeff YANG

TI__Guru** 100555 points

Hi Jeff,

Based on the information from the table, it may be expected.
Perhaps they can add some capacitance close to the pin to make sure the control signal is stable.
I'm not sure I can comment on starting FA or not, although it may not show an issue with the device.

Best regards,
-Ivan Salazar
Applications Engineer

0 Jeff YANG over 2 years ago in reply to Ivan Salazar

Genius 5345 points

Hi Ivan,

Is it possible revise datasheet and notice the maximum and minimum range?

My customer is not happy about only provide typical value let them need change design and re-layout.

Thanks!

Jeff

0 Ivan Salazar over 2 years ago in reply to Jeff YANG

TI__Guru** 100555 points

Hi Jeff,

Unfortunately this may not be a possible change, it would require test VT char. The data above is only acquired through design simulation.

Please notice typ specs are usually covering 1 standard deviation from it's value. some variation is expected.

Best regards,
-Ivan Salazar
Applications Engineer

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