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I noticed that when I use CY4521 as a source and configure the corresponding PDOs as {5,9,15,20}V / 3A it is still possible to draw 5A. Shoudn't there be a limiting instance to comply with USB-PD? What does the over current protection U4 etc. do on the EVK?
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Hello,
The CCG2 notebook firmware needs to be modified to support OCP detection, please refer to the macro OVP_OCP_SUPPORTED_INC. Currently, the overcurrent limit is fixed to 5.35A by the resistor divider in the voltage comparator chip U4.
Best Regards,
Sananya
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Hello,
The CCG2 notebook firmware needs to be modified to support OCP detection, please refer to the macro OVP_OCP_SUPPORTED_INC. Currently, the overcurrent limit is fixed to 5.35A by the resistor divider in the voltage comparator chip U4.
Best Regards,
Sananya