TPS1663: QUERY REGARDING TPS1663

nitish chandra

Part Number: TPS1663
Other Parts Discussed in Thread: TPS23523, TPS23525

We are working on -48V, 2A load (typical) with -40V to -60V input range. TPS23523 is used to protect TPS16630 and load if input exceeds beyond the limits.
We have used the enable of TPS16630 to start the loads individually. At a time either or both loads can be enabled.

Please suggest :
1. Can we use TPS23523 with TPS16630 for negative input scenario?

2. Our load can take input upto -75V but because of small footprint of TPS16630 we have used TPS16630 and limited ourselves to -60V.
Can you please suggest any alternative to TPS16630 with small footprint?

over 4 years ago

0 Avishek Pal over 4 years ago

TI__Mastermind 38910 points

Hi Nitish,

Welcome to E2E !!! Thanks for reaching out to us. However, the application engineer, who supports TPS16630 and particularly TPS23525 is out of office currently due some medical urgency. We will try to get back to you in early next week. Please expect a little bit delay in getting back to you. Sorry for the inconvenience.

0 Rakesh over 4 years ago in reply to Avishek Pal

TI__Guru** 105361 points

Hi Nitish,

You can use TPS16630 in the downstream as long as you won't exceed the voltage rating of TPS16630.

TPS16630 is the right device to support 60V operation from our portfolio.

Please share schematic for review once it is ready.

Best Regards,

Rakesh

0 nitish chandra over 4 years ago in reply to Rakesh

Prodigy 40 points

I already shared the block diagram. Please suggest on that basis.

0 Avishek Pal over 4 years ago in reply to nitish chandra

TI__Mastermind 38910 points

Hi Nitish,

According to the block diagram, it looks fine. Please go ahead to prepare the schematic and share with us for review when it's ready.

Please click on "This resolved my issue" if this post answers your query.

0 nitish chandra over 4 years ago in reply to Avishek Pal

Prodigy 40 points

Here I am attaching the schematic, please review it and suggest that, Can we use TPS23523 with TPS16630 for negative input scenario?

0 Avishek Pal over 4 years ago in reply to nitish chandra

TI__Mastermind 38910 points

Hi Nitish,

We didn't find the schematic here. Please could you attach the schematic once again using "Insert" tab as shown below.

0 nitish chandra over 4 years ago in reply to Avishek Pal

Prodigy 40 points

TPS16630.pdf

0 Avishek Pal over 4 years ago in reply to nitish chandra

TI__Mastermind 38910 points

Hi Nitish,

Thanks for sharing the schematic. We will get back to you tomorrow.

0 Rakesh over 4 years ago in reply to Avishek Pal

TI__Guru** 105361 points

Hi Nitish,

Both schematics looking good to me.

Use TVS diode/ Varistor at the input of TPS23523 and schottky diode at the output of TPS16630. The part details are available in our EVM schematics.

Best Regards, Rakesh

0 nitish chandra over 4 years ago in reply to Rakesh

Prodigy 40 points

Dear sir,

Here we are using hotswap TPS23523 on -ve voltage with overvoltage 60V and using the TPS16630 on +ve voltage with maximum 60V.Will it create any problem?

0 Rakesh over 4 years ago in reply to nitish chandra

TI__Guru** 105361 points

Hi Nitish,

It should not be any problem as the voltage between Vin and GND pins of TPS16630 is +ve

Best Regards, Rakesh

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TPS1663: QUERY REGARDING TPS1663