DC/DC Converter

E_XT-1WAR2 Series

2015.04.14-A/2

Page 3 of 5

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Product Characteristic Curve

-10%

80%

20%

10%

40%

60%

-5%

0

+5%

+10%

+15%

100%

Typ.

Min.

Max.

-7.5%

-2.5%

+2.5%

Output Current Percent(%)

(Nominal Input Voltage)

Tolerance Envelope Curve

Fig. 1

120

100

80

60

40

20

0

-40

0

40

80 100 105

Ambient Temperature( )

℃

Safe Operating Area

Te mperatur e Derating Curv e

Fig. 2

E0505XT-1WAR2

50

55

60

65

70

75

80

85

90

95

100

4.5 4.6 4.7 4.8 4.9

5

5.1 5.2 5.3 5.4 5.5

Input Voltage(V)

Efficiency Vs Input Voltage (Full Load)

E0505XT-1WAR2

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)

E1205XT-1WAR2

50

55

60

65

70

75

80

85

90

95

100

10.8 11.1 11.4 11.7 12.0 12.3 12.6 12.9 13.2

Input Voltage(V)

Efficiency Vs Input Voltage (Full Load)

E1205XT-1WAR2

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 circuit

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

Moreover, choosing a suitable filter capacitor is very important, start-up problems may be caused if the capacitance is too large. Under the

condition of safe and reliable operation, the recommended capacitive load values are shown in Table 1.

Vin

GND

+Vo

0V

DC

Cin

DC

Cout

Cout

-Vo

Fig.3

Recommended capacitive load value table (Table 1)

Vin(VDC)

Cin(μF)

Vo (VDC)

Cout(μF)

3.3

4.7

±5

4.7

5

4.7

±9

2.2

12

2.2

±12

1

15

2.2

±15

1

24

1

±24

0.47