Datasheet

FAN
V1
A1
DC
Source
Vin
-
+
Load
+
V2
-
INSTRUMENTS
TEXAS
www.ti.com Test Setup
4.2 Recommended Test Setup
Figure 3. TPS53355EVM-743 Recommended Test Setup
Figure 3 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:
1. Prior to connecting the dc input source Vin, it is advisable to limit the source current from V
IN
to 10 A
maximum. Ensure that V
IN
is initially set to 0 V and connected as shown in Figure 3.
2. Connect a voltmeter V1 at TP1 (V
IN
) and TP2 (GND) to measure the input voltage.
3. Connect a current meter A1 to measure the input current.
Output Connections:
1. Connect Load to J3, and set Load to constant resistance mode to sink 0 Adc before V
IN
is applied.
2. Connect a voltmeter V2 at TP5 (VOUT) and TP7 (GND) to measure the output voltage.
Other Connections:
Place a fan as shown in Figure 3, and turn it on, making sure that air is flowing across the EVM.
7
SLUU522–August 2011 Using the TPS53355EVM-743, High-Efficiency, 30-A, Synchronous Buck
Converter With Eco-mode™— Control Scheme
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