DC/DC Converter

A_D-1WR2 series

2014.03.03-A/0

Page 3 of4

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Product Characteristic Curve

Tolerance Envelope Graph

+10%

+5%

50

100

+2.5%

-2.5%

-7.5%

Rated

Output Voltage

Output Current Percentage(%)

Typical Loa

d C urve

70

(Nominal Input Voltage)

Fig.1

120

100

80

60

40

20

0

Ambient Temp.()

℃

Temperature Derating Graph

Safe Operating Area

40

0

40

85 105 120

Fig.2

A0505D-1WR2

50

55

60

65

70

75

80

85

90

95

100

Input Voltage (V)

Efficiency Vs Input Voltage (Full Load)

A0505D-1WR2

0

10

20

30

40

50

60

70

80

90

100

10

20

30

40

50

60

70

80

90

100

Output Current Percentage (%)

Efficiency Vs Output Load(Vin=Vin-nominal)

A1205D-1WR2

50

55

60

65

70

75

80

85

90

95

100

Input Voltage (V)

Efficiency Vs Input Voltage (Full Load)

A1205D-1WR2

0

10

20

30

40

50

60

70

80

90

100

10

20

30

40

50

60

70

80

90

100

Output Current Percentage (%)

Efficiency Vs Output Load(Vin=Vin-nominal)

Design Reference

1. Typical application

If it is required to further reduce input and output ripple, a filter capacitor can be connected to the input and output terminals, see Fig.3.

Moreover, choosing suitable filter capacitor is very important, start-up problems may be caused by too large capacitance. To ensured

the modules running well, the recommended capacitive load values as shown in Table 1.

Vin

GND

+Vo

0V

DC

Cin

DC

Cout

Cout

-Vo

Single Output

Fig.3

Recommended capacitive load value table (Table 1)

Vin

(VDC)

Cin

(µF)

Dual Vout

(VDC)

Cout

(µF)

5

4.7

±5

4.7

12

2.2

±9/±12

1

15

2.2

±15/±24

0.47

24

1

--

--

It is not recommended to connect any external capacitor when

output power is less than 0.5W.