I

NSTRUMENTS

Load

+

-

A1

V1

DC

Source

VIN

-

+

FAN

V2

V3

V4

V5

DC

Source

V5IN

-

+

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Test Setup

4.2

Recommended Test Setup

Figure 3. TPS51916EVM-746 Recommended Test Setup

Figure 3 is the recommended test setup to evaluate the TPS51916EVM-746. When 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 source V5IN, it is advisable to limit the source current from V5IN to 1 A

maximum. Ensure that V5IN is initially set to 0 V and connected as shown in Figure 3.

2. Prior to connecting the dc source VIN, it is advisable 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.

3. Connect voltmeters V1 at TP2 (V5IN) and TP3 (GND) to measure V5IN voltage, V2 at TP5 (VIN), and

TP8 (GND) to measure VIN voltage as shown in Figure 3.

4. Connect a current meter A1 between dc source VIN and J2 to measure the input current.

5. Connect a current meter A2 between dc source V5IN and J1 to measure the input current.

Output Connections:

7

SLUU526

– August 2011

Using the TPS51916EVM-746 Complete DDR2, DDR3, DDR3L, and DDR4

Memory Power Solution Synchronous Buck Controller, 2-A LDO, Buffered

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Copyright

© 2011, Texas Instruments Incorporated

Reference