DCR010503: Operation problems

KIM Andy

Part Number: DCR010503

Hi
Our customer is currently using DCR010503U.
Isolation LDO is applied to the board with digital power supply (+5.6V) and PoE power (-57V).
However, in the next mass production, digital power must be applied first to output Vout, and if PoE power is applied first, Vout will not be output.
Do you have a DCR010503U IC with a different version?

over 6 years ago

0 JohnTucker over 6 years ago

TI__Guru**** 191445 points

Andy,
We are on break for the holiday. Someone will get back to you after the new year or possibly sooner.

0 Jimmy Hua over 6 years ago

TI__Guru 50120 points

Hi KIM,

Are you looking to have both digital power supply and PoE power connected on the same VIN path to the DCR010503? Also what particular feature are you looking for in a "different version" of this device?

On the side, I was thinking that you can perhaps have a NMOS gate to turn the DCR010503U when digital power supply is applied and off when the PoE power is applied to the gate. Let me know what your thoughts are on this.

Regards,
Jimmy

0 Jimmy Hua over 6 years ago in reply to Jimmy Hua

TI__Guru 50120 points

Hi KIM,

Can I get an update on this?

Regards,
Jimmy

0 KIM Andy over 6 years ago in reply to Jimmy Hua

Expert 2530 points

Hi
Thank you for the reply.
You are currently in contact with a customer.
The customer wants to see if the version of DCR010503 has changed.

0 KIM Andy over 6 years ago in reply to Jimmy Hua

Expert 2530 points

Hi
Thank you for the reply.
You are currently in contact with a customer.
The customer wants to see if the version of DCR010503 has changed.

Best Regards,
Andy Kim

0 Jimmy Hua over 6 years ago in reply to KIM Andy

TI__Guru 50120 points

Hi KIM,

To my knowledge the DCR010503 device has not been changed since RTM.

Regards,
Jimmy

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DCR010503: Operation problems