MAX5038EAI25 datasheet(6/26 Pages) MAXIM

Part #	MAX5038EAI25

Description	Dual-Phase, Parallelable, Average Current-Mode Controllers

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Manufacturer	MAXIM [Maxim Integrated Products]

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Dual-Phase, Parallelable, Average Current-Mode

Controllers

6

_______________________________________________________________________________________

Typical Operating Characteristics (continued)

(Circuit of Figure 1, TA = +25°C, unless otherwise noted.)

CURRENT-SENSE THRESHOLD

vs. OUTPUT VOLTAGE

VOUT (V)

1.7

1.6

1.4

1.5

1.2

1.3

1.1

46

47

48

49

50

51

52

53

54

55

45

1.0

1.8

PHASE 2

PHASE 1

OUTPUT VOLTAGE vs. OUTPUT CURRENT

AND ERROR AMP GAIN (RF / RIN)

ILOAD (A)

50

45

40

35

30

25

20

15

10

5

1.65

1.70

1.75

1.80

1.85

1.60

055

VIN = +12V

VOUT = +1.8V

RF / RIN = 15

RF / RIN = 12.5

RF / RIN = 10

RF / RIN = 7.5

DIFFERENTIAL AMPLIFIER BANDWIDTH

MAX5038/41 toc12

FREQUENCY (MHz)

1

0.1

0.5

1.0

1.5

2.0

2.5

3.0

3.5

0

0.01

10

-225

-270

-180

-135

-90

-45

0

45

90

PHASE

GAIN

DIFF OUTPUT ERROR

vs. SENSE+ TO SENSE- VOLTAGE

∆VSENSE (V)

1.9

1.8

1.1 1.2 1.3

1.5 1.6

1.4

1.7

0.025

0.050

0.075

0.100

0.125

0.150

0.175

0.200

0

1.0

2.0

VIN = +12V

NO DRIVER

VCC LOAD REGULATION

vs. INPUT VOLTAGE

ICC (mA)

135

120

15 30 45

75 90

60

105

4.85

4.90

4.95

5.00

5.05

5.10

5.15

5.20

4.80

0

150

VIN = +24V

VIN = +12V

VIN = +8V

DC LOAD

VCC LINE REGULATION

VIN (V)

26

24

20 22

12 14 16 18

10

4.80

4.85

4.90

4.95

5.00

5.05

5.10

5.15

5.20

5.25

4.75

828

ICC = 0

ICC = 40mA

VCC LINE REGULATION

VIN (V)

13.0

12.0

9.0

10.0

11.0

4.80

4.85

4.90

4.95

5.00

5.05

5.10

5.15

5.20

5.25

4.75

8.0

ICC = 80mA

DRIVER RISE TIME

vs. DRIVER LOAD CAPACITANCE

CDRIVER (nF)

31

26

16

21

11

6

10

20

30

40

50

60

70

80

90

100

110

120

0

136

DL_

DH_

VIN = +12V

fSW = 250kHz

DRIVER FALL TIME

vs. DRIVER LOAD CAPACITANCE

CDRIVER (nF)

31

26

16

21

11

6

10

20

30

40

50

60

70

80

90

100

110

120

0

136

DL_

DH_

VIN = +12V

fSW = 250kHz

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MAX5038EAI25 Datasheet(PDF) 6 Page - Maxim Integrated Products

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