Model Selection Guide

www.micropowerdirect.com

Notes:

1. When measuring output ripple & noise, it is recommended that an external capacitor (1 µF to 10 µF)

2. Transient recovery is measured to within a 1% error band for a load step change of 25%.

3. Short circuit protection is provided by a “hiccup mode” circuit.

4. All units are rated for EN 55022 (CE/RE) class A without external components. They will meet class

B with the addition of the DCFM-0x (or a similar discrete filter circuit as shown on page 3). Contact

the factory for more information.

5. To meet the requirements of EN 61000-4-4 (±2 kV), external components are needed, as shown

on page 3. With the addition of the DCFM-0x, EN 61000-4-4 (±4 kV) can be achieved. Contact

the factory for more information.

6. To meet the requirements of EN 61000-4-5 (±2 kV), external components are needed. This can be

done discretely (as shown on page 3), or with the addition of the DCFM-0x. Contact the factory for

more information.

7. These units should not be operated with a load under 5% of full load. Operation at no-load will not

damage the unit, but they may not meet all specifications.

9. It is recommended that a fuse be used on the input of a power supply for protection. See the Model

Selection table above for the correct rating.

Model

Number

Input

Output

Efficiency

(%, Typ)

Reflected

Ripple

Current

(mA Typ)

Capacitive

Load

(µF, Max)

Fuse

Rating

Slow-Blow

(mA)

Voltage

(VDC)

Current

(mA, Max)

Current

(mA, Min)

Nominal

Range

Full-Load No-Load

MA624S-05ERUI

24

9.0 - 36.0

301

12

5.0

1,200

60

83

20.0

2,200

2,000

MA624S-12ERUI

24

9.0 - 36.0

287

12

12.0

500

25

87

20.0

680

2,000

MA624S-15ERUI

24

9.0 - 36.0

284

12

15.0

400

20

88

20.0

680

2,000

MA624S-24ERUI

24

9.0 - 36.0

287

12

24.0

250

12

87

20.0

680

2,000

MA648S-05ERUI

48

18.0 - 75.0

151

3

5.0

1,200

60

83

20.0

2,200

1,000

MA648S-12ERUI

48

18.0 - 75.0

143

3

12.0

500

25

87

20.0

680

1,000

MA648S-15ERUI

48

18.0 - 75.0

142

3

15.0

400

20

88

20.0

680

1,000

MA648S-24ERUI

48

18.0 - 75.0

143

3

24.0

250

12

87

20.0

680

1,000

Derating Curve