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ASD20 20w Power Supplies

Isolated and Regulated 20 WATT Modular DC/DC Converters

Wide 4:1 Input Range

1500V Isolation

Short Circuit Protection

Remote On/Off Control

High Efficiency

Input PI Filter

Model Number

Input Voltage Range

Output Voltage

Output Amps

Preset Accuracy

Voltage Balance

Transient Response

Efficiency

ASD20-12S3

9-36 VDC

3.3 VDC

4

±1%

<500uS 25% Load Charge

78%

ASD20-48S3

18-72 VDC

3.3 VDC

4

±1%

<500uS 25% Load Charge

78%

ASD20-12S5

9-36 VDC

5 VDC

4

±1%

<500uS 25% Load Charge

81%

ASD20-48S5

18-72 VDC

5 VDC

4

±1%

<500uS 25% Load Charge

82%

ASD20-12S12

9-36 VDC

12 VDC

1.67

±1%

<500uS 25% Load Charge

83%

ASD20-48S12

18-72 VDC

12 VDC

1.67

±1%

<500uS 25% Load Charge

84%

ASD20-12S15

9-36 VDC

15 VDC

1.33

±1%

<500uS 25% Load Charge

83%

ASD20-48S15

18-72 VDC

15 VDC

1.33

±1%

<500uS 25% Load Charge

84%

ASD20-12D5

9-36 VDC

±5 VDC

±2.0

1/2%

±1% FL

<500uS Full load to 1/2 load

83%

ASD20-48D5

18-72 VDC

±5 VDC

±2.0

1/2%

±1% FL

<500uS Full load to 1/2 load

84%

ASD20-12D12

9-36 VDC

±12 VDC

±833

1/2%

±1% FL

<500uS Full load to 1/2 load

83%

ASD20-48D12

18-72 VDC

±12 VDC

±833

1/2%

±1% FL

<500uS Full load to 1/2 load

84%

ASD20-12D15

9-36 VDC

±15 VDC

±666

1/2%

±1% FL

<500uS Full load to 1/2 load

83%

ASD20-48D15

18-72 VDC

±15 VDC

±666

1/2%

±1% FL

<500uS Full load to 1/2 load

84%

ASD20 series

Input Specifications

Input Voltage Range

9-36 VDC

Remote Off Input Current

Logic Compatibility CMOS or Open Collector TTL; EC-On >+5.5VDC or Open Circuit; EC-Off <1.8VDC; Control Common Ref. to - Input

Input Filter

PI Type

General Specifications

Isolation

1500VDC

Insulation Resistance

10-8nth Ohm min.

Efficiency

74%

Switching Frequency

300KHz

Safety Approvals

UL60950

Physical Specifications

Size (Inches)

1.6” x 2” x 0.45”

Case Material

Black coated Copper w. Non-conductive base

Construction

Fully Encapsulated

Weight (g)

68g

Weight (oz)

2oz

Output Specifications

Output Voltage

3.3 VDC

Output Amps

4

Load Regulation

±0.5% 25% to FL

Line Regulation

±0.5% HL-LL

Preset Accuracy

±1%

Temperature Coefficient

±0.02%/°C

Ripple and Noise

RMS 20mV max. / P-P 75mVp-p max.

Short Circuit Protection

Continuous

Transient Response

<500uS 25% Load Charge

DC Voltage Adjust (typ.)

±10%

Environmental Specifications

Operating Temperature

-25 to +71°C w. Derate See Curve

Case Temperature

110°C max.

Storage Temperature

-55 to +125°C

RFI

Six Sided Shielding

MTBF

880,584 Hrs. MIL-HDBK-217F Ground Benign, 25°C

Notes

All specifications are typical at nominal input, full load, and 25°C unless otherwise noted

Astrodyne products are not authorized or warranteed for use as critical components in life support systems, equipment used in hazardous environments, nuclear controls systems, or other mission-critical applications.