URB1D12LD-20WR3 - Mornsun America

DC/DC Converter

URB1D_LD-20WR3 Series

2018.10.11-A/3 Page 1 of 9

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20W isolated DC-DC converter with Ultra-wide Input

and Regulated Single Output

Patent Protection RoHS

FEATURES

Ultra-wide 4:1 input voltage range

Reinforced I/O isolation test voltage 2.25k VDC

Operating ambient temperature range -40℃to

+85℃

Input under-voltage protection, output short

circuit, over-current, over–voltage protection

Low output ripple & noise

EN50121-3-2 & CISPR32/EN55032 CLASS A EMI

compliant without external components

EN50155/EN60950 Approval

Designed to meet IEC60950/UL60950 safety

standards

Input Reverse Polarity Protection available with

Chassis (A2S) or 35mm DIN-Rail mounting (A4S)

version

Industry standard pin-out

URB1D_LD-20WR3 20W series of isolated DC-DC converter products have an ultra-wide 4:1 input voltage and feature efficiencies of up to

87%. Input to output isolation is tested with 2250VDC and the converters safely operate in an ambient temperature of -40℃to +85℃, input

under-voltage protection, output short circuit, over-current, over–voltage protection and are offered with various mounting options ideally

suiting electronic equipment and railway vehicle applications using 72V, 96V and 110V battery voltages.

Selection Guide

Certification

Part No.①

Input Voltage (VDC)

Output

Full Load

Efficiency③(%)

Min./Typ.

Max. Capacitive

Load(µF)

Nominal

(Range)

Max.②

Voltage (VDC)

Current(mA)

Max./Min.

URB1D03LD-20WR3

110

(40-160)

170

3.3

5000/0

80/82

10000

URB1D05LD-20WR3

4000/0

83/85

10000

URB1D12LD-20WR3

1667/0

84/86

1600

URB1D15LD-20WR3

1333/0

84/86

1000

URB1D24LD-20WR3

833/0

85/87

470

Note:

①Use “H” suffix for heat sink mounting, “A2S” suffix for chassis mounting and “A4S” suffix for DIN-Rail mounting. We recommend to choose modules with a

heat sink for enhanced heat dissipation and applications with extreme temperature requirements;

②Absolute maximum stress rating without damage (not recommended);

③Efficiency is measured at nominal input voltage and rated output load; efficiencies for A2S and A4S Model’s is decreased by 2% due to the input reverse

polarity protection circuit.

DC/DC Converter

URB1D_LD-20WR3 Series

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Input Specifications

Item

Operating Conditions

Min.

Typ.

Max.

Unit

Input Current (full load / no-load)

Nominal input voltage

3.3V output

183/10

188/20

5V output

214/10

219/20

Others

212/3

217/8

Reflected Ripple Current

Nominal input voltage

Surge Voltage (1sec. max.)

-0.7

180

VDC

Start-up Voltage

100% load

Shut-down Voltage

Start-up Time

Nominal input voltage & constant resistance load

Input Filter

Pi filter

Hot Plug

Unavailable

Ctrl*

Module on

Ctrl pin open or pulled high (3.5-12VDC)

Module off

Ctrl pin pulled low to GND (0-1.2VDC)

Input current when off

Note: *The Ctrl pin voltage is referenced to input GND.

Output Specifications

Item

Operating Conditions

Min.

Typ.

Max.

Unit

Voltage Accuracy

0% -100% load

±1

±3

Linear Regulation

Input voltage variation from low to high at full load

±0.2

±0.5

Load Regulation

0% -100% load

±0.5

±1

Transient Recovery Time

25% load step change,

nominal input voltage

300

500

µs

Transient Response Deviation

3.3V/5V output

±3

±8

Others

±3

±5

Temperature Coefficient

Full load

±0.02

±0.03

%/℃

Ripple & Noise *

20MHz bandwidth, 5% -100% load

100

mV p-p

Trim

110

%Vo

Over-voltage Protection

Input voltage range

110

160

Over-current Protection

120

210

%Io

Short-circuit Protection

Continuous, self-recovery

Note: *Ripple & Noise at < 5% load is 5%Vo max. The ”parallel cable” method is used for Ripple and Noise test, please refer to DC-DC Converter Application Notes

for specific information.

General Specifications

Item

Operating Conditions

Min.

Typ.

Max.

Unit

Isolation

Input-output Electric Strength Test for 1 minute with

a leakage current of 1mA max.

2250

VDC

Input/output-case Electric Strength Test for 1

minute with a leakage current of 1mA max.

1600

Insulation Resistance

Input-output resistance at 500VDC

1000

MΩ

Isolation Capacitance

Input-output capacitance at 100KHz/0.1V

2200

Operating Temperature

See Fig. 1

-40

+85

℃

Storage Temperature

-55

+125

Storage Humidity

Non-condensing

%RH

Pin Soldering Resistance

Temperature

Soldering spot is 1.5mm away from case for 10

seconds

300

℃

Switching Frequency*

PWM mode

300

KHz

Vibration

IEC61373 - Category 1, Grade B

MTBF

MIL-HDBK-217F@25℃

1000

K hours

Note: * Switching frequency is measured at full load. The module reduces the switching frequency for light load (below 50%) efficiency improvement.

DC/DC Converter

URB1D_LD-20WR3 Series

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Mechanical Specifications

Case Material

Aluminum alloy

Dimensions

Without heat sink

Horizontal package

50.80 × 25.40 × 11.80mm

A2S chassis mounting

76.00 × 31.50 × 21.20mm

A4S Din-rail mounting

76.00 × 31.50 × 25.80mm

With heat sink

Horizontal package

51.40 × 26.20 × 16.50mm

A2S chassis mounting

76.00 × 31.50 × 25.30mm

A4S Din-rail mounting

76.00 × 31.50 × 29.90mm

Weight

Without heat sink

Horizontal package/A2S chassis mounting/A4S Din-rail

mounting

26.0g/48.0g/68.0g(Typ.)

With heat sink

Horizontal package/A2S chassis mounting/A4S Din-rail

mounting

34.0g/56.0g/76.0g(Typ.)

Cooling Method

Free air convection

Electromagnetic compatibility (EMC) (EN60950)

Emissions

CISPR32/EN55032

CLASS A (without external components)/CLASS B (see Fig. 4-②for recommended circuit)

CISPR32/EN55032

CLASS A (without external components)/CLASS B (see Fig. 4-②for recommended circuit)

Immunity

ESD

IEC/EN61000-4-2

Contact ±6KV/Air ±8KV

perf. Criteria B

IEC/EN61000-4-3

10V/m

perf. Criteria A

EFT

IEC/EN61000-4-4

±4KV (see Fig.3 or Fig.4-①for recommended circuit)

perf. Criteria B

Surge

IEC/EN61000-4-5

line to line ±2KV (2Ω0.5uF see Fig.3 for recommended circuit)

line to ground ±4KV (12Ω0.5uF see Fig.3 for recommended circuit)

perf. Criteria B

EN50121-3-2

line to line ±1KV (42Ω0.5uF see Fig.4-①for recommended circuit)

line to ground ±2KV (42Ω0.5uF see Fig.4-①for recommended circuit)

perf. Criteria B

IEC/EN61000-4-6 10 Vr.m.s

perf. Criteria A

Electromagnetic Compatibility (EMC) (EN50155)

Emissions

EN50121-3-2 150kHz-500kHz 99dBuV

EN55016-2-1 500kHz-30MHz 93dBuV

EN50121-3-2 30MHz-230MHz 40dBuV/m at 10m

EN55016-2-1 230MHz-1GHz 47dBuV/m at 10m

Immunity

ESD

EN50121-3-2 Contact ±6KV/Air ±8KV

perf. Criteria B

EN50121-3-2 20V/m

perf. Criteria A

EFT

EN50121-3-2 ±2kV 5/50ns 5kHz

perf. Criteria A

Surge

EN50121-3-2 line to line ±1KV (42Ω, 0.5μF)

line to ground ±2KV (42Ω, 0.5μF)

perf. Criteria B

EN50121-3-2 0.15MHz-80MHz 10V r.m.s

perf. Criteria A

Note: All the tests are measured under the conditions of inputs capacitor 100uF/200V or FC-CX1D.

Typical Characteristic Curves

Without heatsink

With heatsi nk

Operating Te mperature( )

℃

Temperature Derating Curve

Output Powe r Perc entage(%)

-40 0 40 85 120

100

120

065 71

Safe O perating A rea

Operating Temperature, Except URB1D03/05LD-20W(H)R3(A2S/A4S)

Temperature De rating Curve

Sa fe Op erat ing A rea

-40 0 40 71 85

100

120

Operating Te mpe ratu re ( )

℃

Output Po we r Pe rce ntage(%)

With heatsink

40V Vi n 120V W it hou t heatsin k

≤ ≤

120V Vin 160 VWith ou t heat sin k

＜ ≤

URB1D03LD-20W(H)R3(A2S/A4S) Operating Temperature

DC/DC Converter

URB1D_LD-20WR3 Series

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Temperature Derating Curve

Safe Operating Area

-4 0 0 6 5 8 5

100

120

Operating Temperature ( )

℃

Output Powe r Pe rcen tage( %)

5 5 6 0 7 0

①

②

③

④

①

40 66V

≤

Vin V With ou t heatsin k

＜

②40 66V Vin V With h eatsink

≤ ＜

③120 160V Vin V Without heatsink

＜ ≤

④120V＜Vin V With heatsin k

≤160

Temperature Derating Curve

Saf e Op erati ng Area

-40 0 40 71 85

100

120

Operating Te mperature( )

℃

Output Powe r Perc ent age( %)

①

②

①

②

66 120V Vin V

≤ ≤ Without heatsin k

66 120V Vin V With h eatsink

≤ ≤

URB1D05LD-20W(H)R3(A2S/A4S) Operating Temperature

Fig. 1

Design Reference

1. Typical application

All DC-DC converters of this series are tested before delivery using the recommended circuit shown in Fig. 2.

Input and/or output ripple can be further reduced by appropriately increasing the input & output capacitor values Cin and Cout and/or by

selecting capacitors with a low ESR (equivalent series resistance). Also make sure that the capacitance is not exceeding the max.

capacitive load value of the product.

DC DC

Vin

G ND

+ Vo

Cin Cout

Fuse

Fig. 2

Vout(VDC)

Fuse

Cin

Cout

3.3/5

2A, slow blow

10µF - 47µF

470µF

12/15

220µF

100µF

DC/DC Converter

URB1D_LD-20WR3 Series

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2. EMC compliance circuit

+V in

-Vin FC -CX1D DC- DC

+Vo

FUSE

CY 1

CY 2

Vi n

GND

C1 LOAD

Fig. 3

Fig.3 List of components：

Output voltage

3.3V

12V

15V

24V

FUSE

Choose according to actual input current

FC-CX1D

FC-CX1D is the EMC auxiliary component of our

company. Input voltage range: 40V-160V

100µF/200V

47µF/200V

470µF/16V

220µF/25V

100µF/35V

CY1、CY2

1000pF/400VAC

Vin

GND

+Vo

DC/DC LOAD

LCM

②

①

+Vin C Y3

CY4

CY1

CY2

LCM1 2

C0 C1

-Vin

Fig. 4

Notes: Part ①in the Fig. 4 is used for EMS test and part ②for EMI test

Fig.4 List of components：

Output voltage

3.3V

12V

15V

24V

100µF/200V

C1、C2

0.22µF/250V

47µF/200V

LCM1、LCM2

15mH (UU common mode inductance)

CY1、CY2、

CY3、CY4

1000pF/400VAC

470µF/16V

220µF/25V

100µF/35V

3. Trim Function for Output Voltage Adjustment (open if unused)

Vref

Trim

+Vot

Vref

Trim

+Vot

Trim up Trim down

TRIM resistor connection (dashed line shows internal resistor network)

Calculating Trim resistor values:

up: a= Vref

Vo’-Vref R1

R =TaR2

R -a2-R3

down: a= Vref

Vo’-Vref R2

R =TaR1

R -a1-R3

RT= Trim Resistor value; a = self-defined parameter; Vo’= desired output voltage

Vout(V)

R1(KΩ)

R2(KΩ)

R3(KΩ)

Vref(V)

3.3

4.801

2.87

1.24

2.883

2.87

2.5

11.000

2.87

2.5

14.384

2.87

2.5

24.872

2.87

17.8

2.5

DC/DC Converter

URB1D_LD-20WR3 Series

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4. The products do not support parallel connection of their output

5. For additional information please refer to DC-DC converter application notes on

www.mornsun-power.com

Horizontal Package (without heat sink) Dimensions and Recommended Layout

Horizontal Package (with heat sink) Dimensions

DC/DC Converter

URB1D_LD-20WR3 Series

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URB1D_LD-20WR3A2S (without heatsink) Dimensions

URB1D_LD-20WHR3A2S (with heatsink) Dimensions

DC/DC Converter

URB1D_LD-20WR3 Series

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URB1D_LD-20WR3A4S (without heatsink) Dimensions

URB1D_LD-20WHR3A4S (with heatsink) Dimensions

DC/DC Converter

URB1D_LD-20WR3 Series

2018.10.11-A/3 Page 9 of 9

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Note:

1. For additional information on Product Packaging please refer to www.mornsun-power.com. The Packaging bag number of Horizontal

packaging: 58200035(without heat sink), 58200051(with heat sink), A2S/A4S packaging number: 58220022;

2. The maximum capacitive load offered were tested at input voltage range and full load;

3. Unless otherwise specified, parameters in this datasheet were measured under the conditions of Ta=25℃, humidity<75%RH with nominal

input voltage and rated output load;

4. All index testing methods in this datasheet are based on Company’s corporate standards;

5. Other product application information, please see DC-DC（railway power supply）Converter Application Notes for specific operation

methods;

6. We can provide product customization service, please contact our technicians directly for specific information;

7. Products are related to laws and regulations: see "Features" and "EMC";

8. Our products shall be classified according to ISO14001 and related environmental laws and regulations, and shall be handled by

qualified units.

Mornsun Guangzhou Science & Technology Co., Ltd.

Address: No. 5, Kehui St. 1, Kehui Development Center, Science Ave., Guangzhou Science City, Luogang District, Guangzhou, P. R. China

Tel: 86-20-38601850 Fax: 86-20-38601272 E-mail: sales@mornsun.cn www.mornsun-power.com