ADDC02805S_15 datasheet(2/16 Pages) AD

部件名	ADDC02805S

功能描述	28 V/100 W DC/DC Converter with Integral EMI Filter

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制造商	AD [Analog Devices]

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ADDC02805S–SPECIFICATIONS

ELECTRICAL CHARACTERISTICS

Case

Test

ADDC02805S

Parameter

Temp

Level

Conditions

Min

Typ

Max

Units

INPUT CHARACTERISTICS

Steady State Operating Input Voltage Range

1

Full

VI

IO = 2 A to 20 A

18

28

40

V

Abnormal Operating Input Voltage Range

(Per MIL-STD-704D)

1

Full

VI

IO = 2 A to 16 A

16

50

V

Input Overvoltage Shutdown

+25

°C

I

50

52.5

55

V

No Load Input Current

+25

°CVI

82

90

mA

Disabled Input Current

+25

°CVI

4

5

mA

OUTPUT CHARACTERISTICS2, 3

Output Voltage (VO)

+25

°CI

IO = 2 A to 20 A, VIN = 18 V to 40 V dc

5.00

5.025

5.05

V

Full

VI

IO = 2 A to 20 A, VIN = 18 V to 40 V dc

4.90

5.10

V

Full

VI

IO = 2 A to 16 A, VIN = 16 V to 50 V dc

4.90

5.10

V

Line Regulation

+25

°CVI

IO = 20 A, VIN = 18 V to 40 V dc

1

10

mV

Load Regulation

+25

°CVI

VIN = 28 V dc, IO = 2 A to 20 A

1

10

mV

Output Ripple/Noise4

+25

°CI

IO = 20 A, 5 kHz – 2 MHz BW

15

50

mV p-p

Output Current (IO)

Full

VI

VIN = 18 V to 40 V dc

2

20

A

Output Overvoltage Protection

+25

°CV

IO = 20 A, Open Remote Sense Connection

125

% VO Nom

Output Current Limit

+25

°CV

VO = 90% VOUT Nom

130

% IO max

Output Short Circuit Current

+25

°C

I

45 m

Ω ≤ R

SHORT Circuit ≤ 60 mΩ

30

A

ISOLATION CHARACTERISTICS

Isolation Resistance

+25

°C

I

Input to Output or Any Pin to Case at 500 V dc

100

M

Ω

DYNAMIC CHARACTERISTICS

4

Maximum Output Voltage Deviation Due to

Step Change in Load

+25

°CI

IO = 10 A to 20 A or 20 A to 10 A di/dt = 0.5 A/µs

445

575

mV

Response Time Due to Step Change in Load

+25

°CI

IO = 10 A to 20 A or 20 A to 10 A, di/dt = 0.5 A/µs,

125

170

µs

Time for VOUT to Return within 2% of Final Value

Soft Start Turn-On Time

+25

°CI

IO = 20 A, From Inhibit High to Status High

7

20

ms

THERMAL CHARACTERISTICS

Efficiency

+25

°CI

IO = 12 A

78

80

%

Full

VI

IO = 12 A

76

%

+25

°CI

IO = 20 A

78

79

%

Full

VI

IO = 20 A

76

%

Hottest Junction Temperature

5

+90

°CV

IO = 20 A

110

°C

CONTROL CHARACTERISTICS

Clock Frequency

Full

VI

IO = 2 A

0.87

1.03

MHz

ADJUST (Pin 3) V ADJ

+25

°C

I

1.97

2.04

2.10

V

STATUS (Pin 4)

VOH

+25

°CI

IOH = 400 µA

2.4

4.0

V

VOL

+25

°CI

IOL = 1 mA

0.15

0.7

V

VAUX (Pin 5)

VO (nom)

+25

°CI

IAUX = 5 mA, Load Current = 20 A

14.5

14.7

15.0

V

INHIBIT (Pin 6)

VIL

+25

°CI

0.5

V

IIL

+25

°CI

VIL = 0.5 V

1.2

mA

VI (Open Circuit)

+25

°CI

15

V

SYNC (Pin 7)

6

VIH

+25

°C

I

4.0

V

IIH

+25

°CI

VIH = 7.0 V

150

µA

ISHARE (Pin 8)

+25

°CI

IO = 20 A

2.78

2.82

2.88

V

TEMP (Pin 9)

+25

°C

V

3.90

V

NOTES

150 V dc upper limit rated for transient condition of up to 50 ms. 16 V dc lower limit rated for continuous operation during emergency condition. Steady state

and abnormal input voltage range require source impedance sufficient to insure input stability at low line. See sections entitled System Instability Considerations

and Input Voltage Range.

2Measured at the remote sense points.

3Unit regulates output voltage to zero load.

4C

LOAD = 0.

5Refer to section entitled Thermal Characteristics for more information.

6Unit has internal pull-down; refer to section entitled Pin 7 (SYNC).

Specifications subject to change without notice.

REV. A

–2–

(TC = +25 C, VIN = 28 V dc

0.5 V dc, unless otherwise noted; full temperature range is

–55 C to +90 C; all temperatures are case and TC is the temperature measured at the center of the package bottom.)

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