CCG2 60W car charger reference design to CCG3PA 60W power bank

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chch_3621411
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hello i started new project based on the CCG2 60w carger for power bank thought it would be better to use CCG3PA CYPD3171 as i'm already using it for 15w power bank.
so the the only change i made in the CCG2 60w car charger REFERENCE DESIGN is the CCG2 to CCG3PA i kept everything the same of cource all operation stay the same port source only.

how do i develop firmware base on exemple code CYPD3171-24LQXQ_cla, what do i have to change ? here is the schematic bellow.

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YiZ_31
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Hi,

CYPD3171-24LQXQ_cla is based on our CY4532 demo board. If you want to design a power bank using CCG3PA, you should design firmware based on CYPD3171-24LQXQ_pb instead of CYPD3171-24LQXQ_cla. You should modified the firmware based on different pin function and assignment which would be very difficult based on your current schematic:

1. I2C assignment and I2C function

2. P1.0 P2.0 P2.1P3.0 P3.1 GPIO usage.

3. Move the original USB2.0 port from DP0/DM0 to DP1/DM1.

4. VBUS_P_CTRL & VBUS_C_CTRL function

If you are still open for hardware modification, I recommend you develop hardware based on CCG3PA Power Bank reference design:

https://www.cypress.com/documentation/reference-designs/ccg3pa-45w-power-bank-reference-design-using...

Regards,

Eddie

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YiZ_31
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Hi,

CYPD3171-24LQXQ_cla is based on our CY4532 demo board. If you want to design a power bank using CCG3PA, you should design firmware based on CYPD3171-24LQXQ_pb instead of CYPD3171-24LQXQ_cla. You should modified the firmware based on different pin function and assignment which would be very difficult based on your current schematic:

1. I2C assignment and I2C function

2. P1.0 P2.0 P2.1P3.0 P3.1 GPIO usage.

3. Move the original USB2.0 port from DP0/DM0 to DP1/DM1.

4. VBUS_P_CTRL & VBUS_C_CTRL function

If you are still open for hardware modification, I recommend you develop hardware based on CCG3PA Power Bank reference design:

https://www.cypress.com/documentation/reference-designs/ccg3pa-45w-power-bank-reference-design-using...

Regards,

Eddie

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yes still open for design modification but, CG3PA Power Bank reference design: support only up to 45W, and i need 60w? no USB-A no key and no led, just i2c to communicate with other i2c for led. no dual role port just power source.

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YiZ_31
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Hi,

You can replace SC8915 with SC8815 which support higher power. They are pin-to-pin device.

Regards,
Eddie

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hi thanks for the reply is there any other buck-boost that i can used instead of SC8815, because south-chip is all in Chinese and no so much support document.

because i have worked with the

CCG3PA 45W Power Bank Reference Design using Southchip

but never figured out the purpose of the HT66F0185-SSOP24.
what if i used SC8812 in PB811 wich i find easier can i have 60w on it.
or can i use

NCP81239

wich can support up to 100w.?

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YiZ_31
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Of cource you can choose other buck-boost like SC8812 or NCP81239.

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thank you so much for all the answer, i made reseaches and i found out there is already a reference design with SC8815 but it is only 45W, can it be changed in firware ? i would like to use CYPD3171 instead of CYPD3171 because i already have cypd3171 in another system this will help out with the BOM price.

best regards

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YiZ_31
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Hi,

Like I said, SC8815 and SC8915 are pin-to-pin devices, so there is no need for firmware change.

Can you repeat your second question?

Regards,

Eddie

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you said on this project https://www.cypress.com/documentation/reference-designs/ccg3pa-45w-power-bank-reference-design-using...

if i replace SC8915 with SC8815 it i will be 60W
.

but in this reference design https://www.cypress.com/documentation/reference-designs/ccg3pa-car-charger-reference-design-using-so...  SC8815 is used but it's still 45W, by the way.
so if i used car charger reference design because i want only one role USB-C source power. can i change CYPD3175 that is used in CCG3PA 45w car charger with CYPD3171 ?

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YiZ_31
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Hi,

If you look into the datasheet of SC8815, it can support 60w actually.

Yes, you can replace CYPD3175 with CYPD3171.

Regards,
Eddie

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so if i use 45w carger

https://www.cypress.com/documentation/reference-designs/ccg3pa-car-charger-reference-design-using-so...​wich exemple code should i use ? is CYPD3171-24LQXQ_cla  OR CYPD3171-24LQXQ_pb ?

and last question the component COMMON/NC after fuse ?

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