Diodes AP1501A Manuel d'utilisateur télécharger pdf (Page 8)

AP1501A

150KHz, 5A PWM BUCK DC/DC CONVERTER

AP1501A Rev. 10 8 of 14 SEPTEMBER 2009

DS31191

www.diodes.com © Diodes Incorporated

Typical Performance Characteristics

Typical Performance Characteristics

Normalized Output Voltage

4.90

4.95

5.00

5.05

5.10

-50 -25 0 25 50 75 100 125

OUTPUT VOLTAGE CHANGE

V

IN

=20V, I

LOAD

=3A

Normalized at T

J

= 25°C

JUNCTION TEMPERATURE(°C)

JUNCTION TEMPERATURE(°C)

SWITCH CURRENT LIMIT (A)

Switch Current Limit

0.0

5.0

10.0

15.0

20.0

25.0

-50 -25 0 25 50 75 100 125

JUNCTION TEMPERATURE(°C)

SUPPLY CURRENT (mA)

Operating Quiescent Current

INPUT VOLTAGE

EFFICIENCY (%)

Efficiency

100

65

70

75

80

85

90

95

810152025

30

35

40

5V

3.3V

5A Load

1.2

1.3

1.4

1.5

1.6

1.7

2.0

3

45

SWITCH CURRENT(A)

SATURATION VOLTAGE (V)

1

2

3

1 : -40

o

C

2 : 25

o

C

3 : 125

o

C

Switch Saturation Voltage

5.5

6.0

6.5

7.0

7.5

-50 -25 0 25 50 75 100 125

V

IN

=12V, V

OUT

=5V

SUPPLY VOLTAGE (V)

CURRENT (uA)

0.0

40.0

80.0

120.0

160.0

200.0

Shutdown Quiescent Current

10 20 30 40

V

ON/OFF

=5V

1 : -40

o

C

2 : 25

o

C

3 : 125

o

C

1

3

2

Switch ON

Switch OFF

1 2 3 4 5 6 7 8 9 10 11 12 13 14

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