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4.1.6 Other
FAN
This evaluation module includes components that can get hot to the touch, because this EVM is not
enclosed to allow probing of circuit nodes, a small fan capable of 200-400 lfm is required to reduce
component surface temperatures to prevent user injury. The EVM should not be left unattended while
powered. The EVM should not be probed while the fan is not running.
4.2 Equipment Setup
Shown in Figure 2 is the basic test set up recommended to evaluate the TPS40140EVM-003.
Working at an ESD workstation, make sure that any wrist straps, bootstraps or mats are connected
referencing the user to earth ground before power is applied to the EVM. Electrostatic smock and safety
glasses should also be worn.
4.2.1 Input Connections
1. Prior to connecting the DC input source, V
IN
, it is advisable to limit the source current from VIN to 6A
maximum. Make sure V
IN
is initially set to 0V and connected as shown in Figure 2.
4.2.2 Output Connections
1. Connect LOAD to J3 and J4, set LOAD to constant current mode to sink 0 Adc before V
IN
is applied.
2. Connect voltmeter, V2, across TP9 and TP10, as shown in Figure 2.
4.2.3 Other Connections
1. Place Fan as shown in Figure 2 and turn on, making sure air is flowing across the EVM.
6
Using the TPS40140EVM-003 A 32-A Single Output Two-Phase Stackable SLVU219A–August 2007–Revised November 2010
Synchronous Buck Converter
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