USB EZ-PD™ Type-C Forum Discussions

Hello

They want to operate CY4532 (CCG3PAKIT) as a 100W (20V / 5A) PowerSource, but we are thinking that CY4532 needs to be modified.(ex. Buck-Boost controller /power inductance,/power MOSFET /filter capacitor.,etc). Please tell us in detail what kind of components should be used and what kind of schematic configuration should be used.
In addition, the following items, including the setting of CY4532, are considered as precautions for achieving 100W.

・ Because the AC adapter included to the CY4532 EVK is 12V, a separate power source is required for 20V (5/A)
・Use a terminal connector instead of the barrel connector of the AC adapter to connect the power source
・ Switch the power source of SW1 to the terminal connector side.

Please let me know if you have any problems mentioned above.

Best Regards

Arai

Hi,

I want to make a USB-C cable project using CCCGx chips. They have ARM processors and some GPIOs, even serial ports such as I²C, UART. Can I write my own program in it? If yes, how?

Thanks.

Hi!

We are making a "USB-C to DC" adapter that should support up to 20V. We don't want to power the CYPD3120 thru VBUS since we feel that using the internal LDO generates too much heat when going from 20V VBUS. Instead, we planned to power the CCG3 thru VCONN, that's why we used the CYPD3120.

We had a discussion on the design here: Force VCONN continuously on

We have the sample up and running now and it sources power via VCONN correctly, but we have the following problem:

1. When powering the chip normally thru VBUS power and connected to VBUS_C Pin 31 everything works well, but again, this is not the setup we want.

2. When powering the chip from VCONN (5V) to VBUS_C Pin 31, everything works but when the higher voltage is provided the chip resets with a HARD RESET. We believe this is because the VBUS level stays at 5V instead of the 20V that was expected and an UV condition is triggered.

3. When we power the chip from VCONN (5V) to VSYS (Pin 20), the chip starts (LED blinking), but USB-FS subsystem and CC signalling doesn't start. We are guessing the might have something todo with that VDDD/VDDIO is now 5V instead of 3.3 as it is when system is powered vi VBUS (Pin 31) and the internal LDO. Or?

For 2, we have disabled VBUS_UVP_ENABLE and VBUS_OVP_ENABLE

Have attached schematics and the log from point 2 above.

Cheers

Olof

Looking to confirm what Apple and QC charge modes the CCG3 supports - from page 184 of the TRM there is a fuzzy picture and it looks like Apple 1A and Apple 2A modes but no support for Apple 2.4A (although CCG3PA seems to support this?), is there a definitive list of what Apple and QC modes are supported.

Hi,

Would you please recommend me an initial firmware "template" (from the SDK) and the required steps, how to change the firmware to achieve the following features?

- CCG3 shall perform PD management for UFP port (Power Source, our box acts as a "docking station", that charges laptops)

- CCG3 shall control the PS8742 MUX (FLIP, CE_USB, CE_DP) depending on Alt Mode, Pin Assignment C,D shall be supported. Our box acts as a video receiver device (from a laptop)

- CCG3 shall control the DC-DC converter via GPIOs (1 out of 4 possible power contracts) according to the agreed "power profile" for charging the laptop.

Thank you!

Andras

Hello

They will use the BCR reference KIT(CY4533) to operate as a 20V / 5A Power Sink, but is it possible?
Please let us know if it needs to be aware of the above evaluations or change the circuit,etc.

Best Regards

Arai

We have a design with CYPD4155 where SCB4 is connected to a host processor, and SWD nor any other I2C ports are connected. Will the factory bootloader on this part accept programming on SCB4?

Hello

About CMG1 E-Marker

In the case of 5A charging, it is understood that SOP prime or SOP double prime packet is sent and confirmed after detecting Rp/Rd.

Q1-1)Is the content of the packet to be transmitted specified by the PD standard with a fixed value?
Q1-2)Or is it unique in combination with the terminal (charging side)?

（Q2)

They understand that E-Marker is not required on the adapter side when the adapter is a cable integrated type, even if it supports 5A.
On the terminal side (charged side), it is understood that there is no need to additionally install an E-Marker (special IC) even for 5A charging. Is this correct?

※　The terminal can respond by simply changing the FW for PD communication to transmit SOP prime or SOP double prime packets.

Best Regards

Arai

Hello, I was looking through the CCG5 product page and I noticed that it says that it's not meant to be used in new designs. Is this still the case?

Best,

Ben