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WRF_MT-3W

2013.06.26-A/1

Page 2 of 6

Models ON

Ctrl open or be insulated

Ctrl*

Models OFF

Connect high level voltage,and ensure the current into Ctrl to be 5-10mA

Note: *Please refer to "DESIGN CONSIDERATIONS" as the direction for use of Ctrl .

OUTPUT SPECIFICATIONS

Item

Test Conditions

Min.

Typ.

Max.

Unit

Output Voltage Accuracy

5% to 100% load

--

±1

±3

No-load Output Voltage Accuracy

Input voltage range

--

±1.5

±5

Line Regulation

Full load, Input voltage from low to high

--

±0.2

±0.5

Load Regulation

5% to 100% load

--

±0.2

±0.8

%

Transient Recovery Time

--

0.5

3

ms

Transient Response Deviation

25% load step change

--

±2.5

±5

%

Temperature coefficient

100% load

--

±0.02

±0.03

%/

°C

Ripple*

--

30

45

Noise*

20MHz Bandwidth

--

45

100

mVp-p

Output Short Circuit Protection

Input voltage range

Continuous, automatic recovery

Note:* Ripple and noise tested with

“parallel cable” method. See detailed operation instructions at DC-DC application notes.

COMMON SPECIFICATIONS

Item

Test Conditions

Min.

Typ.

Max.

Unit

Isolation Voltage

Input-Output, Tested for 1 minute, leakage current less than 1 mA

1500

--

--

VDC

Isolation Resistance

Input-Output, Test at 500VDC

1000

--

--

M

Ω

Isolation Capacitance

Input-Output,100KHz/0.1V

--

35

45

pF

Switching Frequency(PFM Mode) 100% load, Nominal Input voltage

--

250

--

KHz

MTBF

MIL-HDBK-217F@25℃

1000

--

--

K hours

Case Material

Epoxy Resin (UL94-V0)

Weight

--

4.8

--

g

ENVIRONMENTAL SPECIFICATIONS

Item

Test Conditions

Min.

Typ.

Max.

Unit

Storage Humidity

Non condensing

--

--

95

%

Operating Temperature

Power derating (above85℃,see Figure 5)

-40

--

85

Storage Temperature

-55

--

125

Temp. rise at full load

Ta=25

°C

--

25

--

Lead Temperature

1.5mm from case for 10 seconds

--

--

300

°C

Cooling

Free air convection

EMC SPECIFICATIONS

CE

CISPR22/EN55022

CLASS B (Recommended Circuit Refer to Figure1-② or Figure 3)

EMI

RE

CISPR22/EN55022

CLASS B (Recommended Circuit Refer to Figure1-② or Figure 3)

ESD

IEC/EN61000-4-2

Contact

±4KV/ Air ±8KV

perf. Criteria B

RS

IEC/EN61000-4-3

10V/m

perf. Criteria A

IEC/EN61000-4-4

±2KV

(Recommended Circuit Refer to Figure1-①)

perf. Criteria B

EFT

IEC/EN61000-4-4

±4KV

(Recommended Circuit Refer to Figure 3)

perf. Criteria B

Surge

IEC/EN61000-4-5

±2KV

(Recommended Circuit Refer to Figure1-① or Figure 3)

perf. Criteria B

CS

IEC/EN61000-4-6

3 Vr.m.s

perf. Criteria A

EMS

Voltage dips, short and

interruptions immunity

IEC/EN61000-4-29

0%-70%

perf. Criteria B