TPS54680MPWPEP datasheet(8/25 Pages) TI1

Part #	TPS54680MPWPEP

Description	3-V TO 6-V INPUT, 6-A OUTPUT TRACKING SYNCHRONOUS BUCK PWM SWITCHER WITH INTEGRATED FETs

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Manufacturer	TI1 [Texas Instruments]

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8 / 25 page

–20

0

20

40

60

80

100

120

140

1

100

1

k

1

M

–200

–180

–160

–140

–120

–100

–80

–60

–40

–20

0

10

10 k 100 k

10 M

f – Frequency – Hz

Phase

Gain

RL = 10 kΩ,

CL = 160 pF,

TA = 25°C

0.885

0.887

0.889

0.891

0.893

0.895

3

3.5

4

4.5

5

5.5

6

fs = 550 kHz

TA = 85°C,

IO = 3 A

VI – Input Voltage – V

200

300

400

500

600

700

800

−55

−10

35

80

125

Junction Temperature (°C)

RT = 68 k

RT = 100 k

RT = 180 k

G004

0.885

0.887

0.889

0.891

0.893

0.895

−55

−10

35

80

125

Junction Temperature (°C)

G005

0

0.5

1

1.5

2

2.5

3

3.5

4

4.5

5

0

1

2

3

4

5

6

7

8

I

–

L

Load Current – A

TJ = 125°C

fs = 700 kHz

VI = 3.3 V

VI = 5 V

0

10

20

30

40

50

60

−55

−10

35

80

125

IO = 6 A

Junction Temperature (°C)

VIN = 3.3 V

G001

0

10

20

30

40

50

60

−55

−10

35

80

125

IO = 6 A

Junction Temperature (°C)

VIN = 5 V

G002

250

350

450

550

650

750

−55

−10

35

80

125

Junction Temperature (°C)

G003

TPS54680-EP

SGLS212A – OCTOBER 2003 – REVISED OCTOBER 2012

www.ti.com

TYPICAL CHARACTERISTICS

DRAIN-SOURCE

INTERNALLY SET

ON-STATE RESISTANCE

OSCILLATOR FREQUENCY

vs

JUNCTION TEMPERATURE

Figure 2.

Figure 3.

Figure 4.

EXTERNALLY SET

DEVICE POWER LOSSES

OSCILLATOR FREQUENCY

VOLTAGE REFERENCE

AT TJ = 125°C

vs

JUNCTION TEMPERATURE

LOAD CURRENT

Figure 5.

Figure 6.

Figure 7.

OUTPUT VOLTAGE REGULATION

ERROR AMPLIFIER

vs

INPUT VOLTAGE

OPEN LOOP RESPONSE

Figure 8.

Figure 9.

8

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