0.001

0.01

0.1

1

10

100

I

- Output Current - A

O

12 Vin

20 Vin

8 Vin

0

10

20

30

40

50

60

70

80

90

100

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Performance Data and Typical Characteristic Curves

Table 3. Test Point Functions (continued)

Test Points

Name

Description

TP4

S3

S3 signal input

TP5

VIN

VIN input

TP6

VLDOIN_EXT

External input for VLDOIN

TP7

S5

S5 signal input

TP8

GND

Ground

TP9

GND

Ground

TP10

SW

Switching node

TP11

VDDQ

VDDQ output

TP12

VTT

VTT output

TP13

GND

Ground

TP14

GND

Ground

TP15

VREF

Internal 1.8-V reference voltage

TP16

GND

Ground

TP17

VTTREF

Buffered VTT reference voltage

TP18

GND

Ground

6.3

Equipment Shutdown

1. Shut down the load.

2. Shut down V5IN and VIN.

3. Shut down the fan.

7

Performance Data and Typical Characteristic Curves

Figure 4 through Figure 22 present typical performance curves for TPS51916EVM-746.

7.1

DDR3 VDDQ Efficiency

Figure 4. DDR3 VDDQ Efficiency

9

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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© 2011, Texas Instruments Incorporated

Reference