Please refer to the thermal considerations in section 3.6 page#7 for steps to prevent overheating here: http://www.cypress.com/file/44581/download
Please make sure you have designed your board according to the design guidelines. You can find more information about this under "Thermal Considerations" in Page#2 of the following document: http://www.cypress.com/file/140006/download
Thank you Dherraj for your considerations. This project is eight years old and we have done some minor changes about 5 years ago in the schematic. We never had thermal issues but I will take some time to evaluate the documents you have highlighted.