About CYPD3125-40LQXI_notebook_one_1_0_3_516_0_0_0_nb.cyacd for CY4531 sample FW

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NoAr_1540581
Level 5
Level 5
Distributor - Macnica (Japan)
5 solutions authored 250 sign-ins 100 replies posted

Hello

I have a question about the sample FW( CYPD3125-40LQXI_notebook_one_1_0_3_516_0_0_0_nb.cyacd,CYPD3125-40LQXI.

I added 12V/3A to the default Source PDO and checked the operation, but it does not work properly. Plwase tell me the reason and workaround.

Best Regards

Arai

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1 Solution
Pranava_YN
Moderator
Moderator
Moderator
100 likes received 500 replies posted 250 solutions authored

Hi Arai-san,

 

The DC-DC converter used in the CY4531 base board only supports 4 voltages i.e. 5V, 9V, 15V and 20V based on VSEL1 and VSEL2 values. Therefore you are not able to get into 12V contract. There are no workarounds for this.

PranavaYN_0-1628074044675.png

 

Best regards,
Pranava

View solution in original post

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3 Replies
Pranava_YN
Moderator
Moderator
Moderator
100 likes received 500 replies posted 250 solutions authored

Hello Arai-san,

Can you please specify what exactly you mean by "not working"? Are you facing issues with respect to PD contract?

Also please do share the modified .cyacd file so that I can check it at my end.

Best regards,
Pranava
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NoAr_1540581
Level 5
Level 5
Distributor - Macnica (Japan)
5 solutions authored 250 sign-ins 100 replies posted

Hello Pranava san

I cannot attach .cyacd file, but Source PDO settings below.

- Source PDO0: 5V/3A

-Source PDO1:9V/3A

-Source PDO2:12V/3A

-Source PDO3:15V/3A

-Source PDO4:20V/3A

Connecting CY4531 and CY4533
The result of switching the SW of CY4533 is as follows.
It seems that only 12V added by PDO can not be contracted
 

<CY4533>

SW15V

SW29V

SW30V -> It seems that only 12V added by CY4531 Source PDO can not be contracted

SW415V

SW520V

Best Regards

Arai

0 Likes
Pranava_YN
Moderator
Moderator
Moderator
100 likes received 500 replies posted 250 solutions authored

Hi Arai-san,

 

The DC-DC converter used in the CY4531 base board only supports 4 voltages i.e. 5V, 9V, 15V and 20V based on VSEL1 and VSEL2 values. Therefore you are not able to get into 12V contract. There are no workarounds for this.

PranavaYN_0-1628074044675.png

 

Best regards,
Pranava
0 Likes