TPS51116MPWPREP datasheet(29/38 Pages) TI1

Part #	TPS51116MPWPREP

Description	COMPLETE DDR, DDR2, DDR3, AND LPDDR3 MEMORY POWER SOLUTION SYNCHRONOUS BUCK CONTROLLER, 1-A LDO, BUFFERED REFERENCE

PDF	38 Pages

Scroll/Zoom	100%

Manufacturer	TI1 [Texas Instruments]

Direct Link	http://www.ti.com

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29 / 38 page

100

−40

−80

1 k

100 k

1 M

−60

−20

−90

−45

180

135

−180

−135

f − Frequency − Hz

Phase

Gain

IVDDQ = 7 A

10 k

−40

−80

100 k

1 M

10 M

−60

−20

−90

−45

180

135

−180

−135

Phase

Gain

f − Frequency − Hz

IVTT = −1 A

t − Time − 200

µs/div

VDDQ

VTTREF

VTT

IVDDQ = IVTT = IVTTREF = 0 A

t − Time − 1 ms/div

VDDQ

VTTREF

VTT

IVDDQ = IVTT = IVTTREF = 0 A

TPS51116-EP

www.ti.com

SLUSB52A – OCTOBER 2012 – REVISED NOVEMBER 2012

TYPICAL CHARACTERISTICS (continued)

Figure 32. Soft-Start Waveforms Tracking Discharge

Figure 33. Soft-Stop Waveforms Non-Tracking Discharge

VDDQ BODE PLOT (CURRENT MODE)

VTT BODE PLOT, SOURCE (DDR2)

GAIN AND PHASE

FREQUENCY

Figure 34.

Figure 35.

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