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USB EZ-PD™ Type-C Forum Discussions

NoAr_1540581
Level 5
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Level 5

Hello

Please tell me the pin processing when the following pins are not used.
・ SAFE_PWR_EN (4 pin)
・ GPIO_1 (8 pins)

 

Best Regards

Arai

 

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1 Solution
Pablo_EG
Moderator
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Moderator

Hello Arai,

Thank you for posting on Infineon Community.

Q) Please tell me the pin processing when the following pins are not used.
・ SAFE_PWR_EN (4 pin)
A) As this is a gate driver output, it is a programmable current sink.
It can be either pull-up or pull-down depending on the status of the Type-C negotiation.

・ GPIO_1 (8 pins)
A) If not enabled, as this is a standard GPIO, it will be high-Z analog.

Best regards,
Pablo

 

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Pablo_EG
Moderator
Moderator 250 sign-ins 250 replies posted 25 likes received
Moderator

Hello Arai,

Thank you for posting on Infineon Community.

Q) Please tell me the pin processing when the following pins are not used.
・ SAFE_PWR_EN (4 pin)
A) As this is a gate driver output, it is a programmable current sink.
It can be either pull-up or pull-down depending on the status of the Type-C negotiation.

・ GPIO_1 (8 pins)
A) If not enabled, as this is a standard GPIO, it will be high-Z analog.

Best regards,
Pablo

 

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NoAr_1540581
Level 5
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Level 5

Hello Pablo san

Thank you for your reply. Please let me check again just in case

If the pins ( SAFE_PWR_EN (4 pin),  GPIO_1 (8 pins))  are not used, is it okay to leave the terminal processing unconnected?

Best Regards

Arai

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Pablo_EG
Moderator
Moderator 250 sign-ins 250 replies posted 25 likes received
Moderator

Hello Arai san,

Yes, both pins should be left unconnected.

Please understand that if the SAFE_PWR_EN pin is not used, the PD capabilities mismatch function will be disabled.

Best regards,
Pablo

 

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NoAr_1540581
Level 5
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Level 5
Hello  Pablo san
 
Thank you for your reply.
 
>Please understand that if the SAFE_PWR_EN pin is not used, the PD capabilities mismatch function will >be disabled.
⇒Yes, When an adapter other than a fixed PDO is connected (capabilities mismatch), we are considering a specification that the VBUS FET and SAFE_PWR FET will not open.
 
 
Best Regards
Arai
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Pablo_EG
Moderator
Moderator 250 sign-ins 250 replies posted 25 likes received
Moderator

Hello Arai san,

Thank you for your clarification.

Best regards,

Pablo

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