TPS53355 datasheet(9/29 Pages) TI1

No de pièce	TPS53355

Description	High-Efficiency 30-A Synchronous Buck Converter with Eco-mode?

Download	29 Pages

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Fabricant	TI1 [Texas Instruments]

Site Internet	http://www.ti.com

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1

10

100

1000

0.01

0.1

1

10

100

Output Current (A)

FCCM

Skip Mode

VIN = 12 V

VOUT = 1.1 V

fSW = 750 kHz

G001

1

10

100

1000

0.01

0.1

1

10

100

Output Current (A)

FCCM

Skip Mode

VIN = 12 V

VOUT = 1.1 V

fSW = 1 MHz

0

300

600

900

1200

1500

0

1

2

3

4

5

6

Output Voltage (V)

fSET = 300 kHz

fSET = 500 kHz

fSET = 750 kHz

fSET = 1 MHz

VIN = 12 V

IOUT = 10 A

1.080

1.085

1.090

1.095

1.100

1.105

1.110

1.115

1.120

0

2

4

6

8

10 12 14 16 18 20 22 24 26 28 30

Output Current (A)

Skip Mode

FCCM

fSW = 500 kHz

VIN = 12 V

VOUT = 1.1 V

1.080

1.085

1.090

1.095

1.100

1.105

1.110

1.115

1.120

4

6

8

10

12

14

16

Input Voltage (V)

FCCM, IOUT = 0 A

Skip Mode, IOUT = 0 A

FCCM and Skip Mode, IOUT = 20 A

fSW = 500 kHz

VIN = 12 V

0

10

20

30

40

50

60

70

80

90

100

0.01

0.1

1

10

100

Output Current (A)

Skip Mode, fSW = 500 kHz

FCCM, fSW = 500 kHz

Skip Mode, fSW = 300 kHz

FCCM, fSW = 300 kHz

VIN = 12 V

VVDD = 5 V

VOUT = 1.1 V

TPS53355

www.ti.com

SLUSAE5

– AUGUST 2011

TYPICAL CHARACTERISTICS (continued)

Figure 9. Switching Frequency vs. Output Current

Figure 10. Switching Frequency vs. Output Current

Figure 11. Switching Frequency vs. Output Voltage

Figure 12. Output Voltage vs. Output Current

Figure 13. Output Voltage vs. Input Voltage

Figure 14. Efficiency vs Output Current

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