SLUU180B January 2022 – February 2022 TPS40070 , TPS40071
Figure 4-1 shows the basic test setup to power up the TPS40071EVM−001.. The input power source should be capable of supplying the input current to the EVM operating in the intended conditions. This input current can be estimated by Equation 10, which allows for approximately 20% headroom over the actual input current requirement:
It is extremely important to monitor VIN and VOUT at the test jacks provided to perform accurate efficiency and regulation tests. Voltage drops through the connectors and input/output wiring can contribute significant errors in these measurements.