TPS54560B: 50ohm Termination Resistor on RT/CLK Pin

Sadanori Kato

Part Number: TPS54560B
Other Parts Discussed in Thread: CDCLVC1103

Hi,

I am considering using TPS54560B with the synchronization mode, so if the clock source cannot drive 50ohm termination resistor, how should this issue be solved ?

Best regards,
Kato

over 6 years ago

0 Arief Hernadi over 6 years ago

TI__Mastermind 23845 points

Hi Kato-san,

Would you be able to use a buffer in order to drive the 50 ohm load?

Thanks

-Arief

0 Sadanori Kato over 6 years ago in reply to Arief Hernadi

Guru 36540 points

Hi Arief-san,

Thank you for your prompt reply.

I would like to use the low cost clock buffer such as CDCLVC1103. Therefore, please tell me how to use the termination resistor more than 50Ω if possible.

Best regards,
Kato

0 Sadanori Kato over 6 years ago in reply to Sadanori Kato

Guru 36540 points

Hi Arief-san,

Sorry for rushing you, but please let me know if you have any updates on this.

Best regards,
Kato

0 Arief Hernadi over 6 years ago in reply to Sadanori Kato

TI__Mastermind 23845 points

Hi Kato-san,

What RT that you are planning to use?

If you are going to synchronize it at all time, then with this clock buffer should be able to drive a 1kohm resistor

Thanks

-Arief

0 Sadanori Kato over 6 years ago in reply to Arief Hernadi

Guru 36540 points

Hi Arief-san,

Thank you for the information.

I will try using tbe synchronization mode with 1kohm resistor.

Best regards,
Kato

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TPS54560B: 50ohm Termination Resistor on RT/CLK Pin