SLVUDB0A August 2025 – October 2025
As discussed in Section 2.1, the USB-C™ connector is able to provide power to the TSWDC155EVM and ADS9324EVM using the default configuration.
The TWDC155EVM is a high-power SuperSpeed® (Certified USB 3.0) device. This means a PC supplies up to 900mA from a compliant USB 3.0 port. However, many PC USB port configurations allow much less than this limit depending on the unit load handshake process, usually resulting from other devices on the bus. Tripping the current limit on a USB can result in cutting power to the USB port, excessive power dissipation or heating, depending on the PC port configuration. As a result, TI highly recommends to consider switching to an externally powered ADS9324EVM or TSWDC155EVM if:
To switch to the external power configuration on the ADS9324EVM, move the jumper on JP1 to the EXT_PWR [2-3] position and use the J19 terminal block to provide the required 5.2V to 5.5V supply. To switch to the external power configuration on TSWDC155EVM, move the jumper on J2 to the 5V (external) position and use the J10 terminal block or barrel jack connector to provide the required 5V supply.
USB hubs can cause possible device enumeration issues and are not recommended when communicating through the TSWDC155EVM.