Analog Devices ADDC02815DA, ADDC02812DA Datasheet

28 V/100 W DC/DC Converters

a

FEATURES
28 V dc Input, 612 V dc @ 8.34 A, 100 W Output

(ADDC02812DA)

28 V dc Input, 615 V dc @ 6.68 A, 100 W Output

(ADDC02815DA)
Integral EMI Filter Designed to Meet MIL-STD-461D
Low Weight: 80 Grams
NAVMAT Derated
Many Protection and System Features

APPLICATIONS
Commercial and Military Airborne Electronics
Missile Electronics
Space-Based Antennae and Vehicles
Mobile/Portable Ground Equipment

GENERAL DESCRIPTION

The ADDC02812DA and ADDC02815DA hybrid military dc/
dc converters with integral EMI filter offer the highest power
density of any dc/dc power converters with their features and in
their power range available today. The converters with integral
EMI filter are a fixed frequency, 1 MHz, square wave switching
dc/dc power supply. They are not variable frequency resonant
converters. In addition to many protection features, these con­verters have system level features that allow them to be used as a
component in larger systems as well as a stand-alone power
supply. The units are designed for high reliability and high
performance applications where saving space and/or weight are
critical.

The ADDC02812DA and ADDC02815DA are available in a
hermetically sealed, molybdenum based hybrid package and are
easily heatsink mountable. Three screening levels are available,
including military SMD.

with Integral EMI Filter

ADDC02812DA/ADDC02815DA

FUNCTIONAL BLOCK DIAGRAM

–SENSE
+SENSE
ADJUST
STATUS

V

INHIBIT

SYNC

I

SHARE

TEMP

–V
+V

AUX

IN
IN

OUTPUT SIDE

CONTROL

CIRCUIT

INPUT SIDE

CONTROL

CIRCUIT

EMI FILTER

PRODUCT HIGHLIGHTS

1. 60 W/cubic inch power density with an integral EMI filter
designed to meet all applicable requirements in MIL-STD­461D when installed in a typical system setup

2. Light weight: 80 grams

3. Operational and survivable over a wide range of input
conditions: 16 V–50 V dc; survives low line, high line, and
positive and negative transients

4. High reliability; NAVMAT derated

5. Protection features include:
Output Overvoltage Protection
Output Short Circuit Current Protection
Thermal Monitor/Shutdown
Input Overvoltage Shutdown
Input Transient Protection

6. System level features include:
Current Sharing for Parallel Operation
Inhibit Control
Output Status Signal
Synchronization for Multiple Units
Input Referenced Auxiliary Voltage

ADDC02812DA/ADDC02815DA

FIXED

FREQUENCY

DUAL
INTERLEAVED
POWER TRAIN

OUTPUT

FILTER

–V

OUT

–V

OUT

V

COM

V

COM

+V

OUT

+V

OUT

REV. A

Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: [phone] World Wide Web Site: http://www.analog.com
Fax: [phone] © Analog Devices, Inc., 1997

ADDC02812DA/ADDC02815DA–SPECIFICATIONS

ELECTRICAL CHARACTERISTICS

(TC = 258C, VIN = 28 V dc unless otherwise noted; full temperature range is –558C to

+908C; all temperatures are case and TCis the temperature measured at the center of the package bottom.)

Parameter Temp Level Conditions Min Typ Max Min Typ Max Units

INPUT CHARACTERISTICS

Steady State Operating Input

Voltage Range1 (12 V) Full VI IO = ±0.42 A to ±4.17 A 18 28 40 V dc

Steady State Operating Input

Voltage Range1 (15 V) Full VI IO = ±0.34 A to ±3.34 A 18 28 40 V dc

Abnormal Operating Input Voltage

Range (per MIL-STD-704D)1 (12 V) Full VI IO = ±0.42 A to ±3.34 A 16 50 V dc

Abnormal Operating Input Voltage

Range (per MIL-STD-704D)1 (15 V) Full VI IO = ±0.34 A to ±2.67 A 16 50 V dc
Input Voltage Shutdown (12 V/15 V) +25°C I 50 52 55 50 52 55 V dc
No Load Input Current (12 V/15 V) +25°C I 85 100 85 100 mA
Disabled Input Current (12 V/15 V) Full VI 1 2 1 2 mA

OUTPUT CHARACTERISTICS

Regulated Output Voltage (+12 V) +25°CI IO = ±0.42 A to ± 4.17 A, +11.88 +12.00 +12.12 V dc

Regulated Output Voltage (+15 V) +25°CI IO = ±0.34 A to ± 3.34 A, +14.85 +15.00 +15.15 V dc

Cross Regulated Output Voltage (–12 V) +25°CI IO = ±0.42 A to ± 4.17 A, –12.24 –12.00 –11.76 V dc

Cross Regulated Output Voltage (–15 V) +25°CI IO = ±0.34 A to ± 3.34 A, –14.70 –15.00 –15.30 V dc

Line Regulation (12 V) +25°CV IO = ±4.17 A, 4 mV
Line Regulation (15 V) +25°CV IO = ±3.34 A, 5 mV
Load Regulation (12 V) +25°CV VIN = 28 V dc, 4 mV
Load Regulation (15 V) +25°CV VIN = 28 V dc, 6 mV
Output Ripple/Noise (Regulated +12 V)5+25°CI IO = ±4.17 A, 45 mV p-p

(Cross Regulated –12 V)
Output Ripple/Noise (Regulated +15 V)5+25°CI IO = ±3.34 A, 45 mV p-p

(Cross Regulated –15 V)
Total Output Current (IO) 12 V Full VI VO = ±12 V dc, 0.833 8.34 A

Total Output Current (IO) 15 V Full VI VO = ±15 V dc, 0.68 6.68 A
Output Overvoltage Protection (12 V) +25°CV IO = ±4.17 A, Open 118 % V nom
Output Overvoltage Protection (15 V) +25°CV IO = ±3.34 A, Open 118 % V nom
Output Current Limit (12 V/15 V) +25°CV VO = 90% V

Output Short Circuit Current (12 V/15 V) +25°C I 15.5 14.5 A

ISOLATION CHARACTERISTICS

Isolation Voltage +25°C I Input to Output or Any Pin 100 100 MΩ

2, 3, 4

5

5

Case Test ADDC02812DA ADDC02815DA

Full VI IO = ±0.42 A to ± 4.17 A, +11.76 +12.24 V dc
Full VI IO = ±0.42 A to ± 4.17 A, +11.76 +12.24 V dc

Full VI IO = ±0.34 A to ± 3.34 A, +14.70 +15.30 V dc
Full VI IO = ±0.34 A to ± 3.34 A, +14.70 +15.30 V dc

Full VI IO = ±0.42 A to ± 4.17 A, –12.36 –11.64 V dc
Full VI IO = ±0.42 A to ± 4.17 A, –12.36 –11.64 V dc

Full VI IO = ±0.34 A to ± 3.34 A, –14.55 –15.45 V dc
Full VI IO = ±0.34 A to ± 3.34 A, –14.55 –15.45 V dc

VIN = 18 to 40 V dc
VIN = 18 to 40 V dc
VIN = 16 to 50 V dc
VIN = 18 to 40 V dc
VIN = 18 to 40 V dc
VIN = 16 to 50 V dc
VIN = 18 to 40 V dc
VIN = 18 to 40 V dc
VIN = 16 to 50 V dc
VIN = 18 to 40 V dc
VIN = 18 to 40 V dc
VIN = 16 to 50 V dc
VIN = 18 to 40 V dc
VIN = 18 to 40 V dc
IO = ±0.42 A to +4.17 A
IO = ±0.34 A to +3.34 A
5 kHz – 2 MHz BW 55 mV p-p
5 kHz – 2 MHz BW 50 mV p-p
VIN = 18 to 40 V dc
VIN = 18 to 40 V dc
Remote Sense Connection
Remote Sense Connection

to Case at 500 V dc

Nom 130 130 % IO max

OUT

–2–

REV. A

ADDC02812DA/ADDC02815DA

Parameter Temp Level Conditions Min Typ Max Min Typ Max Units

Case Test ADDC02812DA ADDC02815DA

DYNAMIC CHARACTERISTICS

6

Output Voltage Deviation Due to Step +25°CV IO = ±2.08 A to ±4.17 A 0.850 V

Change in Load (12 V) or ±4.17 A to ±2.08 A

Output Voltage Deviation Due to Step +25°CV IO = ±1.67 A to ±3.34 A 0.850 V

Change in Load (15 V) or ±3.34 A to ±1.67 A

Response Time Due to Step +25°CV IO = ±2.08 A to ±4.17 A 150 µs

Change in Load (12 V) or ±4.17 A to ±2.08 A

di/dt = 0.5 A/µs, Measured
to Within 2% of Final Value

Response Time Due to Step Change +25°CV IO = ±1.67 A to ±3.34 A or 150 µs

in Load (15 V) ±3.34 A to ±1.67 A,

di/dt = 0.5 A/µs, Measured
to Within 2% of Final Value

Soft Start Turn-On Time (12 V) +25°CI IO = ±4.17 A, from Inhibit 6 15 ms

High to Status High

Soft Start Turn-On Time (15 V) +25°CI IO = ±3.34 A, from Inhibit 6 15 ms

High to Status High

THERMAL CHARACTERISTICS

Efficiency (12 V) +25°CI IO = ±2.5 A 81 85 %

+90°CVI IO = ±2.5 A 81 %
–55°CVI IO = ±2.5 A 80 %
+25°CI IO = ±4.17 A 81 85 %
+90°CVI IO = ±4.17 A 81 %
–55°CVI IO = ±4.17 A 80 %

Efficiency (15 V) +25°CI IO = ±2.0 A 81 85 %

+90°CVI IO = ±2.0 A 81 %
–55°CVI IO = ±2.0 A 80 %
+25°CI IO = ±3.34 A 81 85 %
+90°CVI IO = ±3.34 A 81 %

–55°CVI IO = ±3.34 A 80 %
Hottest Junction Temperature7 (12 V) +90°CV IO = ±4.17 A 110 °C
Hottest Junction Temperature7 (15 V) +90°CV IO = ±3.34 A 110 °C

CONTROL CHARACTERISTICS

Clock Frequency (12 V) Full VI IO = ±0.42 A 0.85 0.99 MHz
Clock Frequency (15 V) Full VI IO = ±0.34 A 0.85 0.99 MHz
Adjust (Pin 3) V
Adjust (Pin 3) V

(12 V) +25°C I 4.7 4.8 4.9 V

ADJ

(15 V) +25°C I 5.9 6.0 6.1 V

ADJ

Status (Pin 4)

V

OH

V

OL

V

(Pin 5)

AUX

VO (nom) (12 V) +25°CI I

+25°CI IOH = 400 µA 2.4 4.0 2.4 4.0 V

+25°CI IOL = 1 mA 0.15 0.7 0.15 0.7 V

= 5 mA, Load 13.00 13.5 14.00 V

AUX

Current = ±4.17 A

V

(Pin 5)

AUX

VO (nom) (15 V) +25°CI I

= 5 mA, Load 13.5 13.9 14.5 V

AUX

Current = ±3.34 A

Inhibit (Pin 6)

V

IL

I

IL

VI (Open Circuit) +25°C I 15 15 V

SYNC (Pin 7)

V

IH

I

IH

I

SHARE

I

SHARE

8

(Pin 8) (12 V) +25° C I Load Current = ±4.17 A 2.65 2.75 2.85 V
(Pin 8) (15 V) +25° C I Load Current = ±3.34 A 2.65 2.75 2.85 V

+25°C I 0.5 0.5 V

+25°CI VIL = 0.5 V 1.2 1.2 mA

+25°C I 4.0 4.0 V

+25°CI VIH = 7.0 V 175 175 µA

Temp (Pin 9) +25°C V 3.90 3.90 V

NOTES

1

Military subgroups apply only to military qualified devices.

2

50 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.

3

Measured at the remote sense points.

4

Output characteristics tested with balanced loads on each output; however, unit operates with unbalanced loads up to 90%/10% split.

5

Regulated output typically performs with less ripple than cross regulated output. 100% test is performed with VD+ regulated and VD– cross regulated.

6

C

= 0.

LOAD

7

Refer to section entitled Thermal Characteristics for more information.

8

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

Specifications subject to change without notice.

REV. A

–3–

ADDC02812DA/ADDC02815DA

WARNING!

ESD SENSITIVE DEVICE

ABSOLUTE MAXIMUM RATINGS*

INHIBIT . . . . . . . . . . . . . . . . . . . . . . . . . . 50 V dc, –0.5 V dc

SYNC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 V dc, –0.5 V dc

I

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 V dc, –0.5 V dc

SHARE

TEMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 V dc, –0.3 V dc

Lead Soldering Temp (10 sec) . . . . . . . . . . . . . . . . . . .+300°C

Storage Temperature . . . . . . . . . . . . . . . . . . –65°C to +150°C

Maximum Junction Temperature . . . . . . . . . . . . . . . .+150°C

Maximum Case Operating Temperature . . . . . . . . . . .+125°C

*Absolute maximum ratings are limiting values, to be applied individually, and

beyond which the serviceability of the circuit may be impaired. Functional
operability under any of these conditions is not necessarily implied. Exposure of
absolute maximum rating conditions for extended periods of time may affect
device reliability.

ORDERING GUIDE

Operating
Temperature Package

Model Range (Case) Description

ADDC02812DAKV –40°C to +85°C Hermetic
ADDC02812DATV –55°C to +90°C Hermetic
5962-9684101HXC
(ADDC02812DATV/QMLH) –55°C to +125°C Hermetic
ADDC02815DAKV –40°C to +85°C Hermetic
ADDC02815DATV –55°C to +90°C Hermetic
5962-9684201HXC
(ADDC02815DATV/QMLH) –55°C to +125°C Hermetic

EXPLANATION OF TEST LEVELS
Test Level

I – 100% production tested.
II – 100% production tested at +25°C, and sample tested

at specified temperatures.
III – Sample tested only.
IV – Parameter is guaranteed by design and characterization

testing.
V – Parameter is a typical value only.
VI – All devices are 100% production tested at +25°C. 100%

production tested at temperature extremes for military

temperature devices; guaranteed by design and charac-

terization testing for industrial devices.

PIN CONFIGURATION

PIN DESCRIPTIONS

Pin
No. Name Function

1 –SENSE Feedback loop connection for remote sensing

output voltage. Must always be connected for
proper operation.

2 +SENSE Feedback loop connection for remote sensing

output voltage. Must always be connected

for proper operation.
3 ADJUST Adjusts output voltage setpoint.
4 STATUS Indicates output voltage is within ±5% of

nominal. Active high referenced to –SENSE

(Pin 1).
5V

AUX

Low level dc auxiliary voltage supply refer-

enced to input return (Pin 10).
6 INHIBIT Power supply disable. Active low and refer-

enced to input return (Pin 10).
7 SYNC Clock synchronization input for multiple

units; referenced to input return (Pin 10).
8I

SHARE

Current share pin which allows paralleled

units to share current typically within ± 5% at

full load; referenced to input return (Pin 10).
9 TEMP Case temperature indicator and temperature

shutdown override; referenced to input return

(Pin 10).
10 –V
11 +V
12 +V

IN

IN
OUT

Input Return.

+28 V Nominal Input Bus.

+12 V dc Output (ADDC02812DA).

+15 V dc Output (ADDC02815DA).
13 +V

OUT

+12 V dc Output (ADDC02812DA).

+15 V dc Output (ADDC02815DA).
14 V
15 V
16 –V

COMMON
COMMON

OUT

Output Return.

Output Return.

–12 V dc Output (ADDC02812DA).

–15 V dc Output (ADDC02815DA).
17 –V

OUT

–12 V dc Output (ADDC02812DA).

–15 V dc Output (ADDC02815DA).

1

TOP

VIEW

11

17

12

CAUTION

ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection. Although
the ADDC02812DA/ADDC02815DA feature proprietary ESD protection circuitry, permanent
damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper
ESD precautions are recommended to avoid performance degradation or loss of functionality.

–4–

REV. A

Typical Performance Curves

86

84

82

80

78

76

EFFICIENCY – %

74

72

70

10 10020 30 40 50 60 70 80 90

Figure 1. Efficiency vs. Line and Load at +25°C
(ADDC02812DA)

28V

40V

V
V
T

OUTPUT POWER – Watts

18V

= 28V

IN

= +12V

O

= +258C

C

ADDC02812DA/ADDC02815DA

14.4

14.2

14.0

13.8

13.6

INPUT VOLTAGE

13.4

13.2

13.0
50 10060 70 80 90

OUTPUT POWER – Watts

Figure 4. Low Line Dropout vs. Load at 90°C Case
Temperature

88

86

18V

84

82

80

78

EFFICIENCY – %

76

74

72

70

10 10020 30 40 50 60 70 80 90

28V

40V

OUTPUT POWER – Watts

V

IN

V

O

T

C

= 28V
= 6 15V
= +258C

Figure 2. Efficiency vs. Line and Load at +25°C
(ADDC02815DA)

87

86

85

1.00

0.50

0.00

DEVIATION – %

OUT

V

–0.50

–1.00

–55 90–35 –15 5 25 55 75

T

CASE

– 8C

Figure 5. Normalized Output Voltage vs. Case

°

Temperature (

2V

/DIV

C)

V

O

EFFICIENCY – %

84

83

–55 90–45 –35 –15 –5 5 25 45 65 85

T

CASE

– 8C

Figure 3. Efficiency vs. Case Temperature (°C)
(at Nominal V

, 75% Max Load, ADDC02812DA)

IN

REV. A

V

INHIBIT

1ms

Figure 6. Output Voltage Transient During Turn-On
with Minimum Load Displaying Soft Start When Supply
Is Enabled

–5–

ADDC02812DA/ADDC02815DA

V

O

200mV

/DIV

100W

I

50W

O

50ms

–10
–20

–30
–40
–50

zASz – dB

–60

–70
–80
–90

–100

0

10

100

1k 10k

FREQUENCY – Hz

50k

Figure 7. Output Voltage Transient Response to a 50% to
a 100% Step Change in Load with Zero Load Capacitance
(ADDC02812DA)

V

O

200mV

/DIV

100W

50W

I

O

50ms

Figure 8. Output Voltage Transient Response to a 50% to
a 100% Step Change in Load with Zero Load Capacitance
(ADDC02815DA)

4

UNREGULATED OUTPUT @ 10%

2

0

FULL POWER

CROSS REGULATION – %

–2

Figure 10. Audio Susceptibility (Magnitude of V

1000

100

z – mV

OUT

zZ

10

1

0.01 1000.1 1 10
FREQUENCY – kHz

OUT/VIN

Figure 11. Incremental Output Impedance (Magnitude)

10

VIN = 28V

VIN = 18V

z – V
zZ

1

IN

–0.1

)

–4

10 9030 50 70

% FULL POWER REGULATED OUTPUT

Figure 9. Cross Regulation Envelope

–0.01

0.01 1000.1 1 10
FREQUENCY – kHz

Figure 12. Incremental Input Impedance (Magnitude)

–6–

REV. A