TPS40140 datasheet(4/65 Pages) TI | DUAL OR 2-PHASE, STACKABLE CONTROLLER

Part No.	TPS40140

Description	DUAL OR 2-PHASE, STACKABLE CONTROLLER

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Manufacturer	TI [Texas Instruments]

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2.5

ELECTRICAL CHARACTERISTICS

TPS40140

DUAL OR 2-PHASE, STACKABLE CONTROLLER

SLUS660A – SEPTEMBER 2005 – REVISED JULY 2006

T

J = –40°C to 85°C, (unless otherwise noted), VVDD = 7 V, VBP5 = 5 V, UVLO_CE1, UCLO_CE2: 10 kΩ, Pullup to BP5,

f

SW = 300 kHz, unless otherwise noted

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VDD INPUT SUPPLY

Operating Voltage Range

4.5

12

15

V

Shutdown Current

UVLO_CE1 = UVLO_CE2 =GND

1

10

µA

BP5 INPUT SUPPLY

Operating Voltage Range

4.5

5.0

5.5

V

BP5 Operating Current

2

3

5

mA

Rising BP5 Turn-On

4.0

4.25

4.45

V

BP5 Turn-Off Hysteresis

100

220

400

mV

Standby Mode Current(1)

UVLO_CEx =1.7V

2.8

mA

VREG

7 V < VDD <15 V

4.5

5.1

5.5

V

Output current

0

100

mA

OSCILLATOR, RT

Phase Frequency Accuracy

RRT= 110 kΩ

300

kHz

Phase Frequency Set Range

150

1000

kHz

RT(1)

25 k

Ω≤ R

RT≤ 500 kΩ

0.7

V

UNDERVOLTAGE LOCKOUT (UVLO_CE1, UVLO_CE2)

Enable threshold, standby mode

Internal 5VREG regulator enabled

0.5

1.0

1.5

V

UVLO threshold

PWM Switching enabled

1.9

2

2.1

V

UVLO hysteresis

At the UVLO_CEx pin

40

mV

UVLO_CE1, UVLO_CE2 bias

1

µA

current(1)

PWM

2-phase, 4-phase, 8-phase or 16-phase

87.5%

Maximum duty cycle per

D

channel(1)

3-phase, 6-phase, or 12-phase

83.3%

VSHARE

IVSHR = 0

1.785

1.8

1.815

V

(1)

-30

µA<i

VSHR < 50µA

1.785

1.8

1.815

V

ERROR AMPLIFIER CH1, ERROR AMPLIFIER CH2

Input Common Mode Range(1)

0

0.7

2.0

V

Input Bias Current(1)

VFB = 0.7 V

10

nA

FBx Voltage(1)

0.6965

0.700

0.7035

V

Output Source Current

VCOMP = 1.1 V, VFB = 0.6 V

1

2

mA

Output Sink Current

VCOMP = 1.1V, VFB = BP5

1

2

mA

BW(1)

8

12

MHz

Open Loop Gain(1)

60

90

dB

VOLTAGE TRACKING (TRK1, TRK2)

After EN, before PWM and during hiccup mode

5

6.0

7.3

µA

SS source current

After first PWM pulse

10

12.5

15

µA

Fault Enable Threshold(1)

1.4

V

Internal Clamp Voltage(1)

2.4

V

SS sink resistance(1)

Pull-down resistance

1

k

Ω

(1)

Ensured by design. Not 100% production tested.

DEVICE RATINGS

4

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