DC/DC Converter

B_RN-1WR2 & B_RT-1WR2 series

2014.05.06-A/0

Page 2 of4

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Storage Humidity

Non-condensing

--

--

95

%

Switching Frequency

100% load, nominal input voltage

--

100

300

KHz

MTBF

MIL-HDFK-217F@25°C

3500

--

--

K hours

Physical Specifications

Casing Material

Black flame-retardant heat-proof epoxy resin (UL94-V0)

Package Dimensions

B_RN-1WR2

19.50*9.50*4.68mm

B_RT-1WR2

19.50*10.53*5.00mm

Weight

1.4g(Typ.)

Cooling Method

Free air convection

EMC Specifications

EMI

Conducted disturbance

CISPR22/EN55022 CLASS B (see Fig. 4 for recommended circuit)

Radiated emission

CISPR22/EN55022 CLASS B (see Fig. 4 for recommended circuit)

EMS

Electrostatic discharge

IEC/EN61000-4-2

Contact ±6KV Air ±8KV

perf. Criteria B

Product Characteristic Curve

Tolerance Envelope Graph

+10%

+5%

50

100

+2.5%

-2.5%

-7.5%

Rated

Output Voltage

Output Current Percentage(%)

Typical Load

Curve

70

(Nominal Input Voltage)

Fig.1

120

100

80

60

40

20

0

-40

0

40

85 105 120

Ambient Temp.()

℃

Temperature D erating Curve

Safe Operating Area

Fig.2

B0505RN(RT)-

1WR2

50

55

60

65

70

75

80

85

90

95

100

Input Voltage(V)

Efficiency Vs Input Voltage (Full Load)

B0505RN(RT)-

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

Fig.3

Recommended capacitive load value table (Table 1)

Vin(VDC)

Cin(µF)

Vo (VDC)

Cout(µF)

5

4.7

5

10

It is not recommended to connect any external capacitor when

output power is less than 0.5W.