TPS40050Q1

TPS40051Q1

TPS40053Q1

SGLS219 − NOVEMBER 2003

www.ti.com

5

ELECTRICAL CHARACTERISTICS

TA = −40°C to 125°C, VIN = 24 Vdc, RT = 90.9 kΩ, IKFF = 150 µA, fSW = 500 kHz, all parameters at zero power dissipation

(unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

CURRENT LIMIT

ISINK

Current limit sink current

6.2

10.0

13

µA

Propagation delay to output

VILIM = 23.7 V, VSW = (VILIM − 0.5 V)

200

300

500

Propagation delay to output

VILIM = 23.7 V, VSW = (VILIM − 2 V)

100

200

400

ns

tON

Switch leading-edge blanking pulse time(1)

100

ns

tOFF

Off time during a fault

7

cycles

VILIM = 23.6 V,

TA = 25°C

−125

−35

VOS

Offset voltage SW vs. ILIM

VILIM = 23.6 V,

0

°C ≤ TA ≤ 85°C

−140

−75

−15

mV

VOS

Offset voltage SW vs. ILIM

VILIM = 23.6 V,

−40

°C ≤ TA ≤ 125°C

−250

10

mV

OUTPUT DRIVER

tLRISE

Low-side driver rise time

CLOAD = 2200 pF

48

96

tLFALL

Low-side driver fall time

CLOAD = 2200 pF

24

48

ns

tHRISE High-side driver rise time

CLOAD = 2200 pF, (HDRV − SW)

48

96

ns

tHFALL

High-side driver fall time

CLOAD = 2200 pF, (HDRV − SW)

36

72

VOH

High-level ouput voltage, HDRV

IHDRV = −0.1 A (HDRV − SW)

BOOST

−1.5 V

BOOST

−1.0 V

VOL

Low-level ouput voltage, HDRV

IHDRV = 0.1 A (HDRV − SW)

0.75

V

VOH

High-level ouput voltage, LDRV

ILDRV = −0.1 A

BP10

−1.4 V

BP10

− 1.0 V

V

VOL

Low-level ouput voltage, LDRV

ILDRV = 0.1 A

0.5

Minimum controllable pulse width

100

150

ns

SS/SD SHUTDOWN

VSD

Shutdown threshold voltage

Outputs off

90

125

150

mV

VEN

Device active threshold voltage

190

210

245

mV

BOOST REGULATOR

VBOOST Output voltage

VIN = 24.0 V

31.5

32.5

33.5

V

RECTIFIER ZERO CURRENT COMPARATOR (TPS40050/TPS40053 SS ONLY)

VSW

Switch voltage

LDRV output OFF

−10

−0.5

10

mV

SW NODE

ILEAK

Leakage current(1)

25

µA

THERMAL SHUTDOWN

TSD

Shutdown temperature(1)

165

°C

TSD

Hysteresis(1)

20

°C

UVLO

VUVLO KFF programmable threshold voltage

RKFF = 28.7 kΩ

6.9

7.5

7.9

V

(1)

Ensured by design. Not production tested.

(2)

IKFF increases with SYNC frequency, IKFF decreases with maximum duty cycle