TPS4H160-Q1: Absolute maximum voltage of VS pins

masahiko shimizu

Part Number: TPS4H160-Q1
Other Parts Discussed in Thread: TPS1H100-Q1

Hi,

My customer is using TPS1H100-Q1 and TPS4H160-Q1.
He do the transient voltage test, JASO D001-94 D-1,

He did implement a surge absorber on his board, then he could clump this surge voltage under 60V.
But maximum absolute rates of datasheet shows 48V(t < 400ms).

In addition to above spec, Is there the spec for the transient voltage test of JASO D001-94 D-1?
I show the transient voltage test, JASO D001-94 D-1 below.

Best regards,
Shimizu

over 7 years ago

0 Harry Kennedy1 over 7 years ago

TI__Expert 3460 points

Hi Shimizu,

Thanks for the question. We do not test to the JASO D001-94 D-1 standard. We've tested the IP according to the ISO 7637-2 standards. This was with 55V US voltage.

I recommend you perform your test with a 55V clamp.

0 masahiko shimizu over 7 years ago in reply to Harry Kennedy1

Guru 11235 points

Hi Harry,

Thank you for your support.

When you did test of ISO 7637-2, you implemented such a surge absorber on your board?
How long time can this device accept surge voltage of 55V?

Best regards,
Shimizu

0 Harry Kennedy1 over 7 years ago in reply to masahiko shimizu

TI__Expert 3460 points

Shimizu,

This was with the typical application diagram shown in our datasheet.

Since the pulse of 55V is above the absolute max value of 48V, we don't recommend this for typical applications. With that being said, the pulse was above 48V for about 20us.

Overall, I don't think the TPS4H160 works for that socket.

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TPS4H160-Q1: Absolute maximum voltage of VS pins