Texas Instruments CSD87381PEVM-603, User Manual, Page: 5 / 19

DC Source
VIN
V1
V2
Vin
J102
GND
GNDS
TP104
V3
Electronic
Load
TP103
DC Source
V5IN
A2
J100
TP102
5V
TP100
GND
TP101
TP105
TP106, TP109, TP110
GND
J103
Vouts
TP107
Vout
EN(J101)
Vins
GNDS
TP108
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Test Setup
4.2 Recommended Test Setup
Figure 3. CSD87381PEVM-603 Recommended Test Setup
Figure 3 shows the recommended test setup to evaluate the CSD87381PEVM-603. Working at an ESD
workstation, make sure that any wrist straps, bootstraps, or mats are connected. Reference the user-to-
earth ground before power is applied to the EVM.
Input Connections:
1. Prior to connecting the DC source VIN, TI recommends 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 3 ).
2. Prior to connecting the DC source V5VIN, TI recommends to limit the source current from V5VIN to 1-
A maximum. Ensure that V5VIN is initially set to 0 V and connected (as shown in Figure 3 ).
3. Connect a voltmeter, V1, at TP103 (Vins) and TP104 (GNDS) to measure VIN voltage, V2 at TP100
(5V), and TP101 (GND) to measure 5V voltage (as shown in Figure 3 ).
4. Connect a current meter A1 between DC source VIN and J102 to measure the input current.
5. Connect a current meter V2 between DC source V5VIN and J100 to measure the 5V input current.
Output Connections:
1. Connect the load to J103 and set load to constant resistance mode to sink 0-ADC before VIN and 5V
are applied.
2. Connect a voltmeter V3 at TP107 (Vouts) and TP108 (GNDS) to measure the output voltage.
5 SLPU003A – February 2014 – Revised February 2014 High Power Density, Low Profile NexFET™ Power Block II for Notebook
Power Supply
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