DC/DC Converter

URF_LP-20WR3 Series

2015.08.12-A/2

Page 3 of 6

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A4S rail package

76.00*31.50*25.80 mm

Weight

Horizontal package/A2S wiring package/A4S rail package

24.00g/46.00g/66.00g (Typ.)

Cooling method

Free air convection

EMC Specifications

EMI

CE

CISPR22/EN55022 CLASS A (Bare component)/

CLASS B (see Fig.3-② for recommended circuit)

RE

CISPR22/EN55022 CLASS A (Bare component)/

CLASS B (see Fig.3-② for recommended circuit)

EMS

ESD

IEC/EN61000-4-2

Contact ±4KV

perf. Criteria B

RS

IEC/EN61000-4-3

10V/m

perf. Criteria A

EFT

IEC/EN61000-4-4

±2KV (see Fig.3-① for recommended circuit)

perf. Criteria B

Surge

IEC/EN61000-4-5

±2KV (see Fig.3-①for recommended circuit)

perf. Criteria B

CS

IEC/EN61000-4-6

3 Vr.m.s

perf. Criteria A

Immunities of voltage dip,

drop and short interruption

IEC/EN61000-4-29 0-70%

perf. Criteria B

Product Characteristic Curve

Operating Temperature( )

℃

Temperature Derating Curve

-40

0

4055

85

120

80

60

100

120

40

20

0

Safe Operating Area

Fig. 1

Design Reference

1. Typical application

All the DC/DC converters of this series are tested according to the recommended circuit (see Fig. 2) before delivery.

If it is required to further reduce input and output ripple, properly increase the input & output of additional capacitors Cin and Cout or

select capacitors of low equivalent impedance provided that the capacitance is no larger than the max. capacitive load of the product.