Texas Instruments TPS2491DGSRG4, TPS2490 Datasheet

3,0 mm X 4,88 mm

Actual Size

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1
2
3
4
5

10

9
8
7
6

EN

VREF

PROG

TIMER

GND

VCC
SENSE
GATE
OUT
PG

DGS Package

(Top View)

7

VCC SENSE GATE OUT

EN

VREF

PG

PROG

TIMER

GND

6

8910

1

2

3

4

5

D1

SMAJ60A

C1

0.1 µF

R

S

0.01 Ω

M1

IRF540NS

R6

470 kΩ

R5

10 Ω

R3

41.2 kΩ

R4

8.25 kΩ

C

T

0.1 µF

C

O

220 µF

R1

324 kΩ

R2

13.3 kΩ

VI = 48 Vdc

VO at 4 A

Power Good

TPS2490/91

I

LIM

= 5 A,

VON/V

OFF

= 34.2 V/31.7 V,

P

LIM

= 34 W,

Timeout = 16 mS

Programmed

SOA, 16mS

POSITIVE HIGH-VOLTAGE POWER-LIMITING HOTSWAP CONTROLLER

FEATURES APPLICATIONS

• Programmable Power Limiting and Current
Limiting for Complete SOA Protection

• Wide Operating Range: +9 V to +80 V

• Latched Operation (TPS2490) and Automatic

Retry (TPS2491)

• High-side Drive for Low-R

DS(on)

External

N-channel MOSFET

• Programmable Fault Timer to Protect the
MOSFET and Eliminate Nuisance Shutdowns

• Power Good Open-Drain Output for Down­stream DC/DC Coordination

• Enable can be used as a Programmable
Undervoltage Lockout or Logic Control

• Small, Space-saving 10-pin MSOP Package

• Server Backplanes

• Storage Area Networks (SAN)

• Medical Systems

• Plug-in Modules

• Base Stations

TPS2490
TPS2491

SLVS503–NOVEMBER 2003

DESCRIPTION

The TPS2490 and TPS2491 are easy-to-use, positive high voltage, 10-pin Hot Swap Power Manager™ devices
that safely drive an external N-channel MOSFET switch. The power limit and current limit (both are adjustable
and independent of each other) ensure that the external MOSFET operates inside a selected safe operating area
(SOA) under the harshest operating conditions. Applications include inrush current limiting, electronic circuit
breaker protection, controlled load turn-on, interfacing to down-stream dc-to-dc converters, and power feed
protection. These devices are available in a small, space-saving 10-pin MSOP package and significantly reduce
the number of external devices, saving precious board space. The TPS2490/91 is supported by application
notes, an evaluation module, and a design tool.

Typical Application and Corresponding SOA

Hot Swap Power Manager is a trademark of Texas Instruments.

PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

Copyright © 2002–2003, Texas Instruments Incorporated

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TPS2490
TPS2491

SLVS503–NOVEMBER 2003

This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.

ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more
susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.

ORDERING INFORMATION

TA FUNCTION PACKAGE PART NUMBER

-40°C to 85°C

(1) Add an R suffix to the device type for tape and reel packaging.

Latched VSSOP-10 TPS2490DGS BIY

Retry (MSOP) TPS2491DGS BIX

(1)

SYMBOL

ABSOLUTE MAXIMUM RATINGS

(1)

over operating free-air temperature range (unless otherwise noted)

UNIT

Input voltage range, VCC, SENSE, EN, OUT -0.3 to 100 V

Output voltage range, GATE, PG -0.3 to 100 V

Input voltage range, PROG -0.3 to 6 V

Output voltage range, TIMER, VREF -0.3 to 6 V

Sink current, PG 10 mA

Source current, VREF 0 to 2 mA

Sink Current, PROG 2 mA

ESD - human body model 2 kV

ESD - charged device model 500 V

Maximum junction temperature, T

Storage temperature, T

Lead temperature 1.6 mm (1/16 inch) from case for 10 seconds 260 °C

(1) Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings

only and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating
conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability

ST

J

150 °C

–65 to 150 °C

RECOMMENDED OPERATING CONDITIONS

MIN NOM MAX UNIT

V

V

I

VREF

T

T

VCC

PROG

J

A

Input voltage range 9 80 V

Input voltage range 0 4 V

Operating current range (sourcing), V

Operating junction temperature -40 125 °C

Operating free-air temperature -40 85 °C

REF

0 1 mA

DISSIPATION RATING TABLE

PACKAGE TA<25°C DERATING FACTOR TA= 70°C TA= 85°C

POWER RATING ABOVE TA= 25°C POWER RATING POWER RATING

mW (mW/°C) (mW) (mW)

VSSOP-10 (MSOP) 376 3.76 207 150

2

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TPS2490
TPS2491

SLVS503–NOVEMBER 2003

ELECTRICAL CHARACTERISTICS

unless otherwise noted, minimum and maximum limits apply across the recommended operating junction temperature and
voltage range, V
all outputs unloaded; positive currents are into pins.

SUPPLY CURRENT (VCC)

Enabled VEN= Hi, V

Disabled VEN= Lo, V

CURRENT SENSE INPUT (SENSE)

I

SENSE

REFERENCE VOLTAGE OUTPUT (VREF)

V

REF

POWER LIMITING INPUT (PROG)

I

PROG

R

PROG

POWER LIMITING AND CURRENT LIMITING (SENSE)

V

CL

V

SENSE

t

F_TRIP

TIMER OPERATION (TIMER)

D

RETRY

GATE DRIVE OUTPUT (GATE)

I

GATE

t

D_ON

t

D_OFF

POWER GOOD OUTPUT (PG)

V

PG_L

V

PGTL

Input bias current V

Reference voltage 0 < I

Input bias current, device enabled, sourcing or
sinking

Pulldown resistance, device disabled I

Current sense threshold V
power limiting trip V

Current sense threshold V
power limiting trip

Large overload response time to GATE low

Charge current (sourcing)

Discharge current (sinking)

TIMER upper threshold voltage 3.9 4 4.1 V

TIMER lower reset threshold voltage TPS2491 only 0.96 1.0 1.04 V

Fault retry duty cycle TPS2491 only 0.5% 0.75% 1.0%

GATE sourcing current 15 22 35 µA

GATE sinking current

GATE output voltage, V

Propagation delay: EN going true to GATE VEN= 0 → 2.5 V, 50% of VENto 50% of
output high

Propagation delay: EN going false (0 V) to
GATE output low

Propagation delay: TIMER expires to GATE
output low

Low voltage (sinking)

PG threshold voltage, V
open drain

= 0 V, and all outputs unloaded; typical specifications are at TJ= 25°C, V

TIMER

VCC

= 48 V, V

TIMER

= 0 V, and

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

= V

SENSE

SENSE

= V

SENSE

VREF

0 < V

PROG

= 200 µA, VEN= 0 V 375 600 Ω

PROG

(VCC-SENSE)

(VCC-sense)

with V

without V

(1)

PROG

PROG

PROG

V

PROG

V

(VCC-SENSE)

C

(GATE-OUT)

V

TIMER

V

TIMER

V

TIMER

V

TIMER

V

SENSE

VEN= Hi

VEN= Lo, V

VEN= Hi, V
V

(VCC-SENSE)

(GATE-OUT)

(1)

V

GATE

, V

, V

VCC

< 1 mA 3.9 4 4.1 V

< 4 V, VEN= 48 V 5 µA

= 2.4 V, V
= 0.9 V, V

= 4 V, V

SENSE

= 4 V, V

OUT

: 0 → 200 mV, 1.2 µS

= 2 nF, V

= 0 V 15.0 25.0 34.0 µA

= 0 V, TJ= 25°C 20.0 25.0 30.0 µA

= 5 V 1.50 2.5 3.70 µA

= 5 V, TJ= 25°C 2.10 2.5 3.10 µA

= V

, V

VCC

= V

GATE

= V

GATE

≥ 200 mV

= V

OUT

VCC

= V

OUT

VCC

= V

= V

VCC

= V

OUT

= 0 V or

OUT

= 30 V, V

OUT

= V

= V

SENSE

(GATE-OUT)

(GATE-OUT)

VCC

, 75 125 250 mA

VCC

, R

(GATE-OUT)

= 0 90 250 µA

OUT

VCC

= 48 V

VCC

OUT

,

= 1 V

= 7 V,

= 1 MΩ

450 1000 µA

7.5 20 µA

17 25 33 mV

45 50 55 mV

1.8 2.4 2.8 mA

12 16 V

25 40 µS

VEN= 2.5 V → 0, 50% of VENto 50% of
V

, V

= V

(1)

(1)

GATE

R

(GATE-OUT)

V

TIMER

V

TIMER

R

(GATE-OUT)

OUT

= 1 MΩ, t

: 0 → 5 V, t

to 50% of V

, 0.5 1 µS

VCC

= 1 MΩ,

< 0.1 µS

FALL

< 0.1 µS, 50% of

RISE

, V

GATE

OUT

= V

, 0.8 1 µS

VCC

IPG= 2 mA 0.1 0.25 V

IPG= 4 mA 0.25 0.5 V

rising, PG goes

OUT

V

SENSE

= V

, measure V

VCC

(VCC-OUT)

0.8 1.25 1.7 V

(1) Not tested in production.

3

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TPS2490
TPS2491

SLVS503–NOVEMBER 2003

ELECTRICAL CHARACTERISTICS (continued)

unless otherwise noted, minimum and maximum limits apply across the recommended operating junction temperature and
voltage range, V
all outputs unloaded; positive currents are into pins.

VPGTH V

∆V

PGT

t

DPG

OUTPUT VOLTAGE FEEDBACK INPUT (OUT)

I

OUT

ENABLE INPUT (EN)

V

EN_H

V

EN_L

INPUT SUPPLY UVLO (VCC)

PG threshold voltage, V
low

PG threshold hysteresis voltage, V

PG deglitch delay, detection to output, rising
and falling edges

Leakage current, PG false, open drain 10 µA

Bias current

Threshold, VENgoing high 1.32 1.35 1.38 V

Threshold, VENgoing low 1.22 1.25 1.28 V

VENhysteresis

Leakage current VEN= 48 V 1 µA

V

VCC

V

VCC

Hysteresis

= 0 V, and all outputs unloaded; typical specifications are at TJ= 25°C, V

TIMER

VCC

= 48 V, V

TIMER

= 0 V, and

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

falling, PG goes

OUT

(SENSE-OUT)VSENSE

(2)

(2)

= V

SENSE

V

SENSE

V

= V

OUT

V

= GND, VEN= Lo, sourcing 18 40 µA

OUT

, measure V

VCC

= V

VCC

= V

VCC

, VEN= Hi, sinking 8 20 µA

VCC

(VCC-OUT)

2.2 2.7 3.2 V

1.4 V

5 9 15 ms

100 mV

turn on Rising 8.4 8.8 V

turn off Falling 7.5 8.3 V

(2)

75 mV

(2) Not tested in production.

4

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200

250

300

350

400

450

500

550

600

9 19 29 39 49 59 69 79

TJ = −40C

TJ = 25C

TJ = 125C

I

VCC

− Supply Current −

VCC − Supply Voltage − V

A

45

46

47

48

49

50

51

52

53

54

55

9 19 29 39 49 59 69 79

TJ = −40C

TJ = 25C

TJ = 125C

VCC − Supply Voltage − V

− Current Limit Trip − mV

V

(

VCC − Sense)

2

2.1

2.2

2.3

2.4

2.5

2.6

9 19 29 39 49 59 69 79

TJ = −40C

TJ = 25C

TJ = 125C

− Gate Pullup Current (EN = OV) − mA

I

Gate

VCC − Supply Voltage − V

15

17

19

21

23

25

27

29

31

33

35

9 19 29 39 49 59 69 79

TJ = −40C

TJ = 25C

TJ = 125C

VCC − Supply Voltage − V

− Gate Pullup Current −

Gate



A

I

TYPICAL CHARACTERISTICS

TPS2490
TPS2491

SLVS503–NOVEMBER 2003

SUPPLY CURRENT CURRENT LIMIT TRIP

SUPPLY VOLTAGE SUPPLY VOLTAGE

GATE PULLUP CURRENT GATE PULLDOWN CURRENT(EN = 0 V)

SUPPLY VOLTAGE SUPPLY VOLTAGE

vs vs

Figure 1. Figure 2.

vs vs

Figure 3. Figure 4.

5

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75

95

115

135

155

175

195

215

9 19 29 39 49 59 69 79

TJ = −40C

TJ = 25C

TJ = 125C

− Gate Pulldown Current − mA

I

Gate

VCC − Supply Voltage − V

0

200

400

600

800

1000

1200

9 14 19 24 29 34 39 44 49

T − Current Limit Response Time − nS

TJ = −40C

TJ = 25C

TJ = 125C

VCC − Supply Voltage − V

18

20

22

24

26

28

30

32

9 19

29

39 49 59 69 79

− Timer Pullup Current −

TJ = −40C

TJ = 25C

TJ = 125C

I

Timer

Aµ

VCC − Supply Voltage − V

13.50

13.75

14

14.25

14.50

9 19 29 39 49 59 69 79

− Gate Output Voltage − V
TJ = −40C

TJ = 25C

TJ = 125C

VCC − Supply Voltage − V

V

Gate

TPS2490
TPS2491

SLVS503–NOVEMBER 2003

TYPICAL CHARACTERISTICS (continued)

GATE PULLDOWN CURRENT CURRENT LIMIT RESPONSE TIME

SUPPLY VOLTAGE SUPPLY VOLTAGE

(EN = 4 V, V(vcc – sense) = 200 mV) (EN = 4 V, V(vcc – sense) = 200 mV)

GATE OUTPUT VOLTAGE TIMER PULLUP CURRENT

SUPPLY VOLTAGE SUPPLY VOLTAGE

vs vs

Figure 5. Figure 6.

vs vs

6

Figure 7. Figure 8.

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9.60

9.65

9.70

9.75

9.80

9 19 29 39 49 59 69 79

TJ = −40C

TJ = 125C

TJ = 25C

− Charge/Discharge Ratio

I

Timer

VCC − Supply Voltage − V

1.245

1.246

1.247

1.248

1.249

1.250

1.251

1.252

1.253

1.254

1.255

9 19 29 39 49 59 69 79

− EN Threshold Voltage (Falling) − V

TJ = −40C

TJ = 125C

TJ = 25C

V

EN

VCC − Supply Voltage − V

1.345

1.346

1.347

1.348

1.349

1.350

1.351

9 19 29 39 49 59 69 79

TJ = −40C

TJ = 125C

TJ = 25C

− EN Threshold Voltage (Rising) − V

V

EN

VCC − Supply Voltage − V

TYPICAL CHARACTERISTICS (continued)

TPS2490
TPS2491

SLVS503–NOVEMBER 2003

TIMER CHARGE/DISCHARGE RATIO EN THRESHOLD VOLTAGE (FALLING)

SUPPLY VOLTAGE AND TEMPERATURE SUPPLY VOLTAGE

vs vs

Figure 9. Figure 10.

EN THRESHOLD VOLTAGE (RISING)

vs

SUPPLY VOLTAGE

Figure 11.

7