TPS2419: Final Schematic Review

Kuan Wei Chen (Kevin Chen)

Part Number: TPS2419

Dear Team,

Can you double-check the schematic is there any concern here?

Kevin

0 Karikalan Selvaraj over 5 years ago

Hi Kevin,

I will look into the schematic and get back tomorrow.

Meanwhile if you could share the operating current and voltage requirements, that will enable better review feedback.

Regards,

Kari.

0 Kuan Wei Chen (Kevin Chen) over 5 years ago in reply to Karikalan Selvaraj

Dear Kari,

12V/9A

Kevin

0 Karikalan Selvaraj over 5 years ago in reply to Kuan Wei Chen (Kevin Chen)

Hi Kevin,

Schematic comments:

MOSFET selection, rating and RdsON are good.

RSET resistor can be changed from 59K to 76K, this will reduce the limit for reverse current and cause little momentary dip during switchover.

With 59K, reverse threshold is -4.28mV, reverse current is -1.66A, with 76K it will be close to -3mV and -1A.

Transient protection:

Absolute maximum rating of this device is 18V and I don’t see any TVS or protection at the input.

Customer may be aware , but needs care here.

Regards,

Kari.

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