Known Limitations with CY4531/CY4541 EVKs Based on CCG EVK Baseboard Rev 04 or Earlier - KBA212600

Version: *A



What are the known limitations with the CY4541/CY4531 EVKs which are based on Revision 04 or earlier of the CCG EVK baseboard?





Limitation 1: The VBUS voltage may drop below vSrcNew* when a peer device draws more than 3 A on a Type-C port.


Workaround: It is recommended to restrict the maximum sink current to 3 A.


Limitation 2: During voltage transitions (for example going from 5 V to 9 V or vice-versa), the overshoot and undershoot on VBUS may exceed the max and min limits of vSrcValid* by up to 10%.


Workaround: None


* Refer to Table 7-22, Source Electrical Parameters of USB Power Delivery Specification, Revision 2.0, Version 1.1 for more details


Note 1: These limitations got fixed in the Revision 05 of the CCG EVK baseboard. Hence they are not applicable on the CY4531/CY4541 EVKs which are based on CCG EVK baseboard, Revision 05 or higher.


Note 2: The Revision number of the CCG EVK baseboard can be found on the PCBA as shown in Figure 1.


Figure 1. Identifying board revision number

1.pngContact Cypress Technical Support for additional details.