TPS65251: TPS65251-Q1 Unused channel

Noritomo Harukawa

Part Number: TPS65251

The customer uses only the BUCK1 converter.
BUCK 2 and BUCK 3 are unused.

I want to confirm the termination of the following pins of the unused BUCK converter.
(x is 2 or 3)

　LXx
　BSTx
　FBx
　CMPx
　SSx
　RLIMx
　ENx
　VINx

From this answer, I think as follows.
Is it correct?

　LXx :Open
　BSTx :Open
　FBx :Connect to V3V pin
　CMPx :Open
　SSx :Connect to GND
　RLIMx :Open
　ENx :Open
　VINx :Connected to VIN 1 of BUCK 1

-Harukawa

0 Zhao Ma over 8 years ago

Hi, Harukawa

Unused channel setup:

LXx :Open
　BSTx :Open
　FBx :Connect to V3V pin
　CMPx :Open
　SSx :Connect to GND
　RLIMx :Open
ENx : Connect to GND
　VINx :Connected to VIN 1 of BUCK 1

0 Noritomo Harukawa over 8 years ago in reply to Zhao Ma

Thank you for your answer.

Since the customer does not use PGOOD, we terminate the pin with the contents of the answer received.

*
This is a confirmation for me.
If using PGOOD, leave ENx open.
(ENx is internally pulled up.)

Is this recognition correct?

-Harukawa

0 Zhao Ma over 8 years ago in reply to Noritomo Harukawa

Yes, you are correct.

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