Figure 4-2 is the recommended test setup to evaluate the TPS53355EVM-743. Working at an ESD workstation, ensure that any wrist straps, bootstraps, or mats are connected referencing the user to earth ground before power is applied to the EVM.
Input Connections:
- Prior to connecting the dc input source
VIN, it is advisable to limit the source current from
VIN to 10 A maximum. Ensure that VIN is initially
set to 0 V and connected as shown in Figure 4-2.
- Connect a voltmeter V1 at TP1 (VIN) and TP2 (GND) to measure the input voltage.
- Connect a current meter A1 to measure the input current.
Output Connections:
- Connect the load to J3, and set Load to constant
resistance mode to sink 0 ADC before VIN is applied.
- Connect a voltmeter V2 at TP5 (VOUT) and TP7 (GND) to measure the output voltage.
Other Connections:
Place a fan as shown in Figure 4-2, and turn it on, making sure that air is flowing across the EVM.