Datasheet

I
EXAS
T
NSTRUMENTS
V1
D
C
S
o
u
r
c
e
V
I
N
A1
V3
Load2
+
V2
Load1
+
www.ti.com Configuration
4.2 Recommended Test Setup
Figure 3. TPS53311EVM-561 Recommended Test Setup
Figure 3 is the recommended test setup to evaluate the TPS53311EVM-561. Working at an ESD
workstation, ensure that any wrist straps, bootstraps, or mats are connected referencing the user to earth
ground before handling the EVM.
Input Connections:
1. Prior to connecting the dc input source VIN, it is advisable to limit the source current from VIN to 5 A
maximum. Ensure that VIN is initially set to 0 V and connected as shown in Figure 3.
2. Connect a voltmeter V1 at TP5 (Vin_MST) and TP8 (GND) to measure input voltage.
3. Connect a current meter A1 between VIN DC source and J6.
Output Connections:
1. Connect Load1 to J3, and set Load to constant resistance mode to sink 0 Adc before Vin is applied.
2. Connect a voltmeter V2 at TP7(Vout_MST) and TP10(GND) to measure the 1.5-V output voltage.
3. Connect Load2 to J8 and set Load to constant resistance mode to sink 0 Adc before Vin is applied.
4. Connect a voltmeter V3 at TP19 (Vout_SLV) and TP21 (GND) to measure the 1.2-V output voltage.
5 Configuration
All jumper selections must be made prior to applying power to the EVM. Users can configure this EVM per
the following configurations.
5.1 5-Vin Option (J1: 5-Vin Option)
The 5-V input option can be set by J1.
Default setting: 3.3 Vin.
7
SLUU428A–July 2010–Revised November 2010 Using the TPS53311EVM-561, a 3-A Eco-mode™ Integrated Switcher With
Master-Slave
Submit Documentation Feedback
Copyright © 2010, Texas Instruments Incorporated