Isolated and Regulated 40 WATT Modular DC/DC Converters

300 Myles Standish Blvd., Taunton, MA 02780

Ph: 1-800-823-8082

fax: 508-823-8181

WWW.ASTRODYNe.cOM

INPUT SPecIfIcATIONS

Input Voltage Ranges:

24 VDC Nominal

18-36 VDC

48 VDC Nominal

36-75 VDC

Input Filter (Note 6)

L-C Type

Under Voltage Lockout

24V Input

DC-DC On: 17.8V

DC-DC Off: 16V

48V Input

DC-DC On: 36V

DC-DC Off: 34V

Input Voltage Variation dv/dt

5V / mS, max.

(Complies with ETS300 132 part 4.4)

Input Surge Voltage 100mS max. 24V Input

50VDC

48V Input

100VDC

Input Reflected Ripple (Note 7)

Nom I/P and FL

40mA Pk-Pk

Start Up Time

Nom. I/P and Static Resistive Load

25mS, typ.

Remote ON/OFF (Note 8)

DC-DC On: Open or 3.5V < Vr < 12V

DC-DC Off: Short or 0V < Vr < 1.2V

Remote Off Input Current

Nom. Input:

2.5mA

OUTPUT SPecIfIcATIONS

Output Power

40 Watts Max.

Voltage and Current

See Selection Chart

O/P Accuracy (FL & Nom I/P)

single/dual; +/- 1%

Triple Main: +/-1%

Triple Aux.: +/-3%

Voltage Adjust (Note 1)

+/-10%

Min. Load-Triple Only (Note 2)

10%

Load Regulation-10%-FL

singles: +/-0.5%

(Note 3)

duals: +/-1%

Triple Main: +/-2%

Triple Aux.: +/-5%

Line Regulation

single/dual; +/- 0.5%

Triple Main: +/-1%

Triple Aux.: +/-5%

Cross Regulation (Note 4)

single/dual/triple main +/-1%

triple aux. +/-5%

Temperature Coefficient

+/-0.02%/DegC, Max.

Ripple/Noise (Note 5)

See Selection Chart

Transient Response

(25% Load Step)

400uS

Voltage Stability

(singles/duals)

+/- 2%

(triples)

5 V:+/-2%, Aux: +/-5%

Over Load Protection

FL, Nom. I/P: 150% Max.

Short Circuit Protection

Hiccup, Auto Recovery

OVP Threshold, Zener Diode Clamp:

3.3V Output

3.9Volts

5V Output

6.2Volts

12V Output

15Volts

15V Output

18Volts

GeNeRAL SPecIfIcATIONS

Input-Out Isolation

1600VDC

Isolation Resistance

10-9nth Ohms

Isolation Capacitance

1000pF, Max.

Efficiency

See Selection Chart

Switching Frequency (Note 9)

300Khz, typ

eNVIRONMeNTAL SPecIfIcATIONS

Oper. Temperature

-40 to +85°C with derate

Storage Temperature

Relative Humidity

Maximum Case Temp

Over Temp. Protection

115°C, typ.

Thermal Impedance (Note 11)

Convection:

9.2°C/Watt

Heat Sink w. 20LFM

8.5°C/Watt

Heat Sink w. 500LFM

2.8°C/Watt

Thermal Shock

MIL-STD-810D

Vibration

10-55Hz, 2G, 30 Minutes

along X, Y and Z Axes

MTBF (Note 10)

1.398 MHrs

PHYSIcAL SPecIfIcATIONS

Case Material

Nickel-Coated Copper

Non-Conductive Base

Construction

Fully Encapsulated with

UL94-VO Epoxy

Dimensions

2.0” x 2.0” x 0.40”

Weight

2.11 oz, (60g)

may adversely affect long term reliability. Proper operation under conditions

other than the standard operating conditions is neither warranteed nor implied.

All specifications are typical at nominal input, full load, and 25DegC unless

otherwise noted