DC/DC Converter

A_S-1W(E)R2 & B_LS-1W(E)R2 Series

2014.03.03-A/3

Page 4 of5

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A0505S-1WR2

50

55

60

65

70

75

80

85

90

95

100

Input Voltage (V)

Efficiency Vs Input Voltage (Full load)

A0505S-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=5V)

A2415S-1WR2

50

55

60

65

70

75

80

85

90

95

100

Input Voltage (V)

Efficiency Vs Input Voltage (Full Load)

A2415S-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=12V)

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

Dual O utput

Single Ou tput

Vin

GND

+Vo

0V

DC

Cin

DC

Cout

Fig.3

Recommended capacitive load value table (Table 1)

Vin

(VDC)

Cin

(µF)

Single Vout

(VDC)

Cout

(µF)

Dual Vout

(VDC)

Cout

(µF)

3.3/5

4.7

3.3/5

10

±3.3/±5

4.7

9/12

2.2

9/12

2.2

±9/±12

1

15

2.2

15/24

1

±15/±24

0.47

24

1

--

--

--

--

It is not recommended to connect any external capacitor when

output power is less than 0.5W.

2. EMC typical recommended circuit (CLASS B)

Vin

GND

+Vo

-Vo

()

0V

DCDC

LOAD

LDM

C1

Vin

GND

C2

Fig.4

Input voltage (V)

3.3/5/9/12/15/24

EMI

C1

4.7µF /50V

C2

Refer to the Cout in Fig.3

LDM

6.8µH