TPS51518_15 datasheet(4/35 Pages) TI

No de pièce	TPS51518

Description	Single-Phase, D-CAP??and D-CAP2??Controller with 2-Bit Flexible VID Control

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Fabricant	TI [Texas Instruments]

Site Internet	http://www.ti.com

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TPS51518

SLUSAO8

– DECEMBER 2011

www.ti.com

ELECTRICAL CHARACTERISTICS

over operating free-air temperature range, VV5IN= 5 V, VMODE= 5 V, VEN= 3.3 V (unless otherwise noted)

PARAMETER

TEST CONDITION

MIN

TYP

MAX

UNIT

SUPPLY CURRENT

IV5IN

V5IN supply current

TA = 25°C, No load, VEN = 5 V, VMODE = 5 V

560

μA

IV5SDN

V5IN shutdown current

TA = 25°C, No load, VEN = 0 V

1

μA

VREF OUTPUT

VVREF

Output voltage

IVREF = 30 µA, w/r/t GSNS

2.000

V

0

µA ≦ IVREF < 30 µA, 0°C ≦ TA < 85°C

–0.8%

0.8%

VVREFTOL

Output voltage tolerance

0

µA ≦ IVREF < 300 µA, –10°C ≦ TA < 105°C

–1%

1%

IVREFOCL

Current limit

VVREF-GSNS = 1.7 V

0.4

1.0

mA

OUTPUT VOLTAGE

VSLEWCLP

SLEW clamp voltage

VREFIN = 1 V

0.92

1.08

V

gM

Error amplifier transconductance

VREFIN = 1 V

60

µS

IVSNS

VSNS input current

VVSNS = 1.0 V

–1

1

μA

IVSNSDIS

VSNS discharge current

VEN = 0 V, VVSNS = 0.5 V, VMODE = 0 V

12

mA

SMPS FREQUENCY

fSW

Switching frequency

VIN = 12 V, VVSNS = 1.0 V, VMODE = 0 V

350

kHz

tON(min)

Minimum on-time

DRVH rising to falling

40

ns

tOFF(min)

Minimum off-time

DRVH falling to rising

320

DRIVERS

Source, IDRVH = 50 mA

1.7

RDH

High-side driver resistance

Ω

Sink, IDRVH = 50 mA

0.8

Source, IDRVL = 50 mA

1.1

RDL

Low-side driver resistance

Ω

Sink, IDRVL = 50 mA

0.6

INTERNAL BOOT STRAP SW

VFBST

Forward voltage

VV5IN-BST, TA = 25°C, IF = 10 mA

0.1

0.2

V

IBST

BST leakage current

TA = 25°C, VBST = 33 V, VSW = 28 V

0.01

1.50

μA

LOGIC THRESHOLD AND TIMING

VVIDx(LL)

VID1/VID0 low-level voltage

0.3

V

VVIDx(LH)

VID1/VID0 high-level voltage

0.9

V

VVIDx(HYST)

VID1/VID0 hysteresis voltage

0.4

V

IVIDx(LLK)

VID1/VID0 input leakage current

–1

0

1

μA

VEN(LL)

EN low-level voltage

0.5

V

VEN(LH)

EN high-level voltage

1.5

V

VEN(HYST)

EN hysteresis voltage

0.25

V

IEN(LLK)

EN input leakage current

–1

1

nA

SOFT START/SLEW RATE

ISS

Soft-start current

Soft-start current source

10

μA

ISLEW

Slew control current

50

μA

4

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