TIDUES0E June 2019 – April 2024 TMS320F28P550SJ , TMS320F28P559SJ-Q1
The external power is directly used to power fans, relays and isolated bias supplies. Therefore, the eFuse TPS2640 is used to protect the system. Overvoltage protection is set to 15 V, undervoltage lockout is set to 9 V and a current limit is set to 2.2 A. A detailed design procedure is found in the device data sheet. Two LEDs are used to indicate the status. The green LED D8 indicates normal status, while the red LED D6 indicates a fault state. Use the S1 push-button to reset the device.
The power module TLVM13620 is used to generate a 5-V rail from the input. LED D10 indicates the 5-V output. A module with integrated inductor is used for the design simplicity and small footprint.
Two LDOs are used to generate a 3.3-V analog and a 3.3-V digital rail.