2B0505XNM [MICRODC]

Isolated 2W Single Output DC/DC Converters;


型号：	2B0505XNM
厂家：	MICRODC POWER TECHNOLOGY CO., LTD
描述：	Isolated 2W Single Output DC/DC Converters
文件：	总4页 (文件大小：655K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

2B-XNM Series

Isolated 2W Single Output DC/DC Converters

SELECTION GUIDE

Input

Output

Current

(MA)

Input Current

(Rated Load)

(MA)

Efficiency

(%)

Isolation

Capacitance

(PF)

MTTF¹

Order code

Voltage

(V)

(KHRS)

2B0505XNM

2B0509XNM

2B0512XNM

2B0515XNM

2B1205XNM

2B1209XNM

2B1212XNM

2B1215XNM

2B2405XNM

2B2409XNM

2B2412XNM

2B2415XNM

400

222

167

133

400

222

167

133

400

222

167

133

513

492

479

481

207

198

197

104

100

2327

1393

832

481

716

593

461

328

315

302

295

282

FEATURES

◆Footprint from 1.05cm²

◆I/O isolation voltage 1000VDC

◆Operating Temperature: -40℃～﹢85℃

◆High efficiency up to 85%

◆Fully encapsulated toroidal magnetics

◆Internal SMD construction

Input Characteristics

◆Custom solutions available

◆No electrolytic or tantalum capacitors

◆5V,9V,12V and 15V output

Parameter

Conditions

Min Typ Max. Units

Continuous operation,5V input types

Continuous operation,12V input types

Continuous operation,24V input types

5V input types

4.5

5.5

Voltage range

10.8

21.6

13.2

26.4

◆No heatsink required

mA p-p

Reflected ripple current

12V input types

◆Pin compatible with B-XN(S)D series

◆UL 94V-0 package material

◆No external compo nents required

◆Industry standard pinout

OUTPUT CHARACTERISTICS

Parameter

Rated Power

Conditions

Min

Typ.

Max. Units

TA=-40°C to 85°C

See tolerance envelope

High VIN to low VIN

Voltage Set Point Accuracy

Line regulation

◆Power density 2.01W/cm³

1.0

1.2

8.5

5V output

Load regulation

◆MTTF up to 2.3 million hours

9V output

4.5

3.7

5.2

10% load to rated load

12V output

5.5

MODEL SELECTION

15V output

8.5

①

②

③

④

⑤

⑥

2B 05 05 X N M

B0505XNM,BW=DC to 20MHz

B0509XNM,BW=DC to 20MHz

B0512XNM,BW=DC to 20MHz

B0515XNM,BW=DC to 20MHz

B1205XNM,BW=DC to 20MHz

B1209XNM,BW=DC to 20MHz

B1212XNM,BW=DC to 20MHz

B1215XNM,BW=DC to 20MHz

200

mA p-p

①Product Series

③Output Voltage

⑤Negation layout

②Input Voltage

④Fixed Input

⑥Package Style

Ripple and Noise

APPLICATIONS

The 2B-XNM series of DC/DC Converters is

particularly suited to isolating and/or

converting DC power rails. The galvanic

isolation allows the device to be conﬁgured to

provide an isolated negative rail in systems

where only positive rails exist.The wide

temperature range guarantees startup from

–40°C and full 2 watt output at 85°C. Pin

compatibility with the B-XN(S)D-1W ensures

ease of upgradeability.

Absolute Maximum Ratings

Short-circuit protection²

Lead temperature 1.5mm from case for 10 seconds

Internal power dissipation

1 second

300°C

805mW

Input voltage VIN,B05 types

Input voltage VIN,B12 types

15V

Input voltage VIN,B24 types

28V

Isolation characteristics

Parameter

Isolation test voltage

Resistance

Conditions

1 second

Min.

1000

Typ

Max.

Unit

VDC

GΩ

Viso= 500VDC

1.Calculated using MIL-HDBK-217FN2 calculation model with nominal input voltage at full load.

2.Supply voltage must be disconnected at the end of the short circuit duration.

MICRODC RESERVES THE COPYRIGHT

All specifications typical at TA=25°C,nominal input voltage and rated output current unless otherwise specified.

http://www.microdc.cn Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646

Page 1 of 4

2B-XNM Series

Minimum load

The minimum load to meet datasheet speciﬁcation is 10% of the full rated load across the speciﬁed input voltage range. Lower than 10% minimum loading

will result in an increase in output voltage, which may rise to typically double the speciﬁed output voltage if the output load falls to less than 5%.

Capacitive loading and start up

Typical start up times for this series, with a typical input voltage rise time of 2.2s and output capacitance of 10F, are shown in the table below. The product

series will start into a capacitance of 47F with an increased start time, however, the maximum recommended output capacitance is 10F.

Start-up time

B0505XNM

B0509XNM

B0512XNM

B0515XNM

B1205XNM

B1209XNM

B1212XNM

B1215XNM

790

1154

2265

2998

396

880

1156

2394

General Characteristics

Parameter

Conditions

Min.

Typ.

Max.

Units

5V input types

12V input types

kHz

Switching frequency

Temperature Characteristics

Parameter

Conditions

Min.

Typ.

Max.

Units

Specification

Storage

All output types

-40

-50

130

℃

Case temperature above

ambient

5V output types

All other output types

Free air convection

Cooling

Temperature derating graph

Tolerance envelope

The voltage tolerance envelope shows typical load regulation characteristics for this

product series. The tolerance envelope is the maximum output voltage variation due

to changes in output loading.

http://www.microdc.cn Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646

Page 2 of 4

2B-XNM Series

Technical notes

ISOLATION VOLTAGE

"Hi Pot Test","Flash Tested","Withstand Voltage","Dielectric Withstand Voltage"&”Isolation Test Voltage" are all terms that relate to the same thing, a test voltage.

Applied for a specified time, across a component designed to provide electrical isolation, to verify the integrity of that isolation.

Professional Power Module B-XNM series of DC/DC converters are all 100% production tested at their stated isolation voltage. This is 1KVDC for 1 second.

A question commonly asked is,"What is the continuous voltage that can be applied across the part in normal operation?"

The B-XNM series has been recognized by Underwriters Laboratory for functional insulation. Both input and output should normally be maintained within SELV limits i.e. less than

42.4V peak, or 60VDC.The isolation test voltage represents a measure of immunity to transient voltages and the part should never be used as an element of a safety isolation system.

The part could be expected to function correctly with several hundred volts offset applied continuously across the isolation barrier, but then the circuitry on both sides of the barrier must

be regarded as operating at an unsafe voltage and further isolation/insulation systems must form a barrier between these circuits and any user-acssible circuitry according to

safety standard requirements.

REPEATED HIGH-VOLTAGE ISOLATION TESTING

It is well known that repeated high-voltage isolation testing of a barrier component can actually degrade isolation capability, to a lesser or greater degree depending on materials.

Construction and environment. The B-XNM series has toroidal isolation transformers, with no additional insulation between primary and secondary windings of enameled wire. While

parts can be expected to withstand several times the stated test voltage, the isolation capability does depend on the wire insulation. Any material, including this enamel (typically

polyurethane) is susceptible to eventual chemical degradation when subject to very high applied voltages thus implying that the number of tests should be strictly limited. We

therefore strongly advise against repeated high voltage isolation testing. but if it is absolutely required, that the voltage be reduced by 20% from specified test voltage.

This consideration equally applies to agency recognized parts for better than functional isolation where the wire enamel insulation is always supplemented by a further

insulation system of physical spacing or barriers.

OUTPUT RIPPLE REDUCTION

Output ripple reduction

By using the values of inductance and capacitance stated, the output ripple at the rated load is lowered to 5mV p-p max.

Component selection

Capacitor: Ceramic chip capacitors are recommended. It is required that the ESR(Equivalent Series Resistance)should be as low as possible.X7R types are recommended.

The voltage rating should be at least twice(except for 15V output),the rated output voltage of the DC/DC converter.

Inductor: The rated current of the inductor should not be less than of the output of the DC/DC converter. At the rated current, the DC resistance of the inductor should be such that the voltage drop across the

inductor is <2% of the rated voltage of the DC/DC converter. The SRF(Self Resonant Frequency) should be >20MHz.

CHARACTERISATION TEST METHODS

Ripple & Noise Characterisation Method

Ripple and noise measurements are performed with the following test conﬁguration.

1μF X7R multilayer ceramic capacitor, voltage rating to be a minimum of 3 times the output voltage of the DC/DC converter

10μF tantalum capacitor, voltage rating to be a minimum of 1.5 times the output voltage of the DC/DC converter with an ESR of less than 100mΩ at 100 KHz

100nF multilayer ceramic capacitor, general purpose

450Ω resistor, carbon ﬁ lm, ±1% tolerance

50Ω BNC termination

3T of the coax cable through a ferrite toroid

RLOAD

Resistive load to the maximum power rating of the DC/DC converter. Connections should be made via twisted wires

Measured values are multiplied by 10 to obtain the speciﬁed values.

Differential Mode Noise Test Schematic

http://www.microdc.cn Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646

Page 3 of 4

2B-XNM Series

PACKAGE SPECIFICATIONS

MECHANICAL DIMENSIONS

SIP Package

FOOTPRINT DETAILS

PIN CONNECTIONS-4 PIN SIP

Function

Vin

GND

+Vo

Specifcations can be changed any time without notice.

No parallel connection or plug and play.

Note:

1. The load shouldn't be less than 10%, otherwise ripple will increase dramatically.

2. Operation under 10% load will not damage the converter; However, they may not meet all specification listed.

3. All specifications measured at Ta=25°C, humidity<75%, nominal input voltage and rated output load unless

otherwise specified.

4. In this data sheet, all the test methods of indications are based on corporate standards.

All dimensions in inches ±0.01(mm±0.25mm).

All pins on a 0.1(2.54) pitch and within ±0.01(0.25)of true position.

Weight: 2.0g

RECOMMENDED FOOTPRINT DETAILS

TUBE OUTLINE DIMENSIONS

4 PIN SIP Tube

4 Pin SIP Package

Unless otherwise stated all dimensions in inches (mm) ±0.5mm.

Tube length (4 Pin SIP) : 20.47 (520mm ±2mm).

Tube Quantity :35

RoHS COMPLIANT INFORMATION

Microdc Professional Power Module,Inc.

Tel:0086-20-86000646 E-mail:tech@microdc.cn

Website:http://www.microdc.cn

This series is compatible with RoHS soldering systems with a peak wave solder temperature of 300°C

for 10 seconds. The pin termination finish on the SIP package type is Tin Plate, Hot Dipped over Matte

Tin with Nickel Preplate. The DIP types are Matte Tin over Nickel Preplate. Both types in this series are

backward compatible with Sn/Pb soldering systems.

Microdc Professional Power module,Inc.makes no representation that

the use of its products in the circuits described herein, or the use of other

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Page 4 of 4

REACH COMPLIANT INFORMATION

future patent rights. Specifications are subject to change without notice.

This series has proven that this product does not contain harmful chemicals, it also has harmful chemical

substances through the registration, inspection and approval.

2B0505XNM [MICRODC]

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