TPS62180_16 datasheet(5/35 Pages) TI1

No de pièce	TPS62180

Description	4-V to 15-V, 6-A, 2-Phase Step-Down Converters with AEE

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Fabricant	TI1 [Texas Instruments]

Site Internet	http://www.ti.com

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TPS62180, TPS62182

www.ti.com

SLVSBB8A – AUGUST 2014 – REVISED AUGUST 2014

8.5 Electrical Characteristics

Over operating junction temperature range (TJ = –40°C to +125°C) and VIN = 4 V to 15 V.

Typical values at VIN = 12 V and TJ = 25°C (unless otherwise noted).

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

SUPPLY

VIN

Input voltage range

4

15

V

EN = High, IOUT = 0 mA, Device not switching,

IQ

Operating quiescent current

28

55

µA

(TJ = –40°C to +85°C)

ISD

Shutdown current

EN = Low (

≤ 0.3 V), (TJ = –40°C to +85°C)

2.8

15

µA

VUVLO

Falling input voltage

3.5

3.6

3.7

V

Undervoltage lockout threshold (1)

Hysteresis

300

mV

TSD

Rising junction temperature

160

Thermal shutdown

°C

Hysteresis

20

CONTROL (EN, SS/TR, PG)

VH_EN

High-level input threshold voltage (EN)

0.97

1

1.03

V

VL_EN

Low-level input threshold voltage (EN)

0.87

0.9

0.93

V

ILKG_EN

Input leakage current (EN)

EN = VIN or GND

0.01

1.2

µA

ISS/TR

SS/TR pin source current

4.5

5

5.5

µA

Rising (%VOUT)

94%

96%

98%

VTH_PG

Power good threshold voltage

Falling (%VOUT)

90%

92%

94%

VOL_PG

Power good output low voltage

IPG= -2 mA

0.3

V

ILKG_PG

Input leakage current (PG)

1

100

nA

POWER SWITCH

Phase 1

High-side MOSFET ON-resistance

27

65

m

Ω

Phase 2

RDS(ON)

VIN = 7.5 V

Phase 1

Low-side MOSFET ON-resistance

21

45

m

Ω

Phase 2

ILIM

High-side MOSFET current limit

Each phase, VIN = 7.5 V

4.0

4.7

5.5

A

TPSD

Phase shift delay time

Phase 2 after Phase 1, PWM mode

250

ns

OUTPUT

VREF

Internal reference voltage

0.792

0.8

0.808

V

ILKG_FB

Input leakage current (FB)

VFB = 0.8 V

1

100

nA

RDISCHARGE Output discharge resistance

EN = Low

60

Ω

Output voltage range (TPS62180)

VIN ≥ VOUT

0.9

6

V

Output voltage (TPS62182)

3.3

V

PWM Mode, VIN ≥ VOUT + 1 V

–1%

1%

Power Save Mode, VOUT = 3.3 V, Iload ≥ 1 mA,

L = 1 µH, COUT = 2 x 47 µF, (TJ = –40°C to +85°C)

Feedback voltage accuracy

–1%

2%

Power Save Mode, VOUT = 1.8 V, Iload ≥ 1 mA,

(TPS62180)(2)

L = 1 µH, COUT = 4 x 47 µF, (TJ = –40°C to +85°C)

VOUT

Power Save Mode, VOUT = 0.9 V, Iload ≥ 1 mA,

–1%

3%

L = 1 µH, COUT = 4 x 47 µF, (TJ = –40°C to +85°C)

PWM Mode, VIN ≥ VOUT + 1 V

–1%

1%

Output voltage accuracy

Power Save Mode, Iload ≥ 1 mA, L = 1 µH,

(TPS62182)(2)

–1%

2%

COUT = 2 x 47 µF, (TJ = –40°C to +85°C)

Load regulation

VOUT = 3.3 V, PWM Mode operation

0.04

%/A

Line regulation

4 V

≤ VIN ≤ 15 V, VOUT = 3.3 V, IOUT = 4 A

0.01

%/V

Hiccup on time

0.9

tHICCUP

ms

Hiccup off time

5

(1)

The minimum VIN value of 4 V is not violated by UVLO threshold and hysteresis variations.

(2)

The accuracy in Power Save Mode can be improved by increasing the output capacitor value, reducing the output voltage ripple.

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