NMH1205DV [MURATA]

Analog Circuit;


型号：	NMH1205DV
厂家：	muRata
描述：	Analog Circuit 转换器电源电路输出元件
文件：	总6页 (文件大小：223K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

NMH Series

www.murata-ps.com

Isolated 2W Dual Output DC/DC Converters

SELECTION GUIDE

Nominal

Input

Output

Voltage

Output

Current

Isolation

Capacitance

Input

Current at Efﬁciency

Rated Load

MTTF¹

Package

Style

Order Code

Voltage

2ꢀꢀ

111

5ꢀꢀ

494

488

476

5ꢀꢀ

494

488

476

2ꢀ8

2ꢀ1

198

2ꢀ8

2ꢀ1

198

1ꢀ3

8ꢀ

3ꢀ

1ꢀ4

9ꢀ

112

9ꢀ

112

kHrs

1574

663

338

187

1574

663

338

187

49ꢀ

343

229

148

49ꢀ

343

229

148

318

249

183

127

318

249

183

127

235

195

152

112

235

195

152

112

NMH0505DC

NMH0509DC

NMH0512DC

NMH0515DC

NMH0505SC

NMH0509SC

NMH0512SC

NMH0515SC

NMH1205DC

NMH1209DC

NMH1212DC

NMH1215DC

NMH1205SC

NMH1209SC

NMH1212SC

NMH1215SC

NMH2405DC

NMH2409DC

NMH2412DC

NMH2415DC

NMH2405SC

NMH2409SC

NMH2412SC

NMH2415SC

NMH4805DC

NMH4809DC

NMH4812DC

NMH4815DC

NMH4805SC

NMH4809SC

NMH4812SC

NMH4815SC

DIP

SIP

DIP

SIP

DIP

SIP

DIP

SIP

FEATURES

ꢀRoHS compliant

2ꢀꢀ

111

ꢀEfﬁciency up to 86%

ꢀPower density up to 1.44W/cm³

2ꢀꢀ

111

ꢀWide temperature performance at full

2 watt load, –4ꢀ°C to 85°C

ꢀDual output from a single input rail

ꢀUL 94V-ꢀ package material

ꢀNo heatsink required

ꢀFootprint from 1.46cm²

ꢀIndustry standard pinout

ꢀPower sharing on output

ꢀ1kVDC isolation

2ꢀꢀ

111

2ꢀꢀ

111

2ꢀꢀ

111

1ꢀ3

ꢀ5V, 12V, 24V & 48V input

ꢀ5V, 9V, 12V and 15V output

ꢀInternal SMD construction

2ꢀꢀ

111

ꢀFully encapsulated with toroidal

magnetics

2ꢀꢀ

111

ꢀNo external components required

ꢀMTTF up to 1.5 million hours

ꢀNo electrolytic or tantalum capacitors

DESCRIPTION

INPUT CHARACTERISTICS

Parameter

Conditions

Min.

4.5

Typ.

Max.

5.5

Units

The NMH series of industrial temperature range

DC/DC converters are the standard buliding blocks

for on-board point-of-use power systems. They

are ideally suited for providing dual rail supplies

on single rail boards with the added beneﬁt of

galvanic isolation to reduce circuit noise. All of

the rated power may be drawn from a single pin

provided the total load does not exceed 2 watts.

Continuous operation, 5V input types

Continuous operation, 12V input types

Continuous operation, 24V input types

Continuous operation, 48V input types

5V input types

1ꢀ.8

21.6

43.2

13.2

26.4

52.8

Voltage range

5ꢀ

12V input types

7ꢀ

Reﬂected ripple current

mA p-p

24V input types

13ꢀ

2ꢀꢀ

48V input types

Pin compatibility with the NMA 1 watt series

ensures minimal effort in upgrading distributed

power systems.

1. Calculated using MIL-HDBK-217F with nominal input voltage at full load.

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

For full details go to

www.murata-ps.com/rohs

www.murata-ps.com/support

KDC_NMH.E03 Page 1 of 6

NMH Series

Isolated 2W Dual Output DC/DC Converters

OUTPUT CHARACTERISTICS

Parameter

Rated Power¹

Conditions

TA=-4ꢀ°C to 85°C

Min.

Typ.

Max.

Units

Voltage Set Point Accuracy

NMHꢀ5ꢀ5DC/SC

-5

7.5

All other types

Line regulation

Load Regulation

High V^INto low VIN

1.ꢀ

1.2

1ꢀ

%/%

1ꢀ% load to rated load, 5V output types

1ꢀ% load to rated load, 9V output types

1ꢀ% load to rated load, 12V output types

1ꢀ% load to rated load, 15V output types

BW=DC to 2ꢀMHz, 5V output types

BW=DC to 2ꢀMHz, 9V output types

BW=DC to 2ꢀMHz, 12V output types

BW=DC to 2ꢀMHz, 15V output types

1ꢀ

15ꢀ

1ꢀꢀ

8ꢀ

2ꢀꢀ

15ꢀ

Ripple and Noise

mV p-p

7ꢀ

ABSOLUTE MAXIMUM RATINGS

Lead temperature 1.5mm from case for 1ꢀ seconds

3ꢀꢀ°C

Internal power dissipation

3ꢀꢀmW

Input voltage V^IN, NMHꢀ5 types

Input voltage V^IN,NMH12 types

Input voltage V^IN,NMH24 types

Input voltage V^IN,NMH48 types

15V

28V

54V

ISOLATION CHARACTERISTICS

Parameter

Isolation test voltage

Resistance

Conditions

Flash tested for 1 second

Viso= 5ꢀꢀV

Min.

1ꢀꢀꢀ

Typ.

1ꢀ

Max.

Units

VDC

GΩ

GENERAL CHARACTERISTICS

Parameter

Conditions

5V input types

Min.

Typ.

Units

kHz

Switching frequency

12V input types

24V & 48V input types

9ꢀ

8ꢀ

TEMPERATURE CHARACTERISTICS

Parameter

Speciﬁcation

Storage

Conditions

All output types

Min.

-4ꢀ

Typ.

Max.

Units

°C

-5ꢀ

13ꢀ

5V output types

3ꢀ

Case Temperature above ambient

Cooling

12V output types

Free air convection

TEMPERATURE DERATING GRAPH

TOLERANCE ENVELOPE

+1ꢀ%

+5%

V_NOM

+2.5%

-2.5%

-7.5%

85°C

Safe Operating Area

1ꢀꢀ

1ꢀ 25

5ꢀ

ꢀ

Output Load Current (%)

-4ꢀ

1ꢀꢀ

Ambient Temperature (°C)

15ꢀ

ꢀ

5ꢀ

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.

1. See derating graph.

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KDC_NMH.E03 Page 2 of 6

NMH Series

Isolated 2W Dual Output DC/DC Converters

TECHNICAL NOTES

ISOLATION VOLTAGE

‘Hi Pot Test’, ‘Flash Tested’, ‘Withstand Voltage’, ‘Proof 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.

Murata Power Solutions NMH series of DC/DC converters are all 1ꢀꢀ% 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?”

For a part holding no speciﬁc agency approvals, such as the NMH series, both input and output should normally be maintained within SELV limits i.e. less than 42.4V peak, or

6ꢀVDC. 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-accessible 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 NMH 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 2ꢀ% from speciﬁed test voltage.

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

insulation system of physical spacing or barriers.

RoHS COMPLIANCE INFORMATION

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

3ꢀꢀ°C for 1ꢀ 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.

For further information, please visit www.murata-ps.com/rohs

APPLICATION NOTES

Minimum load

The minimum load to meet datasheet speciﬁcation is 1ꢀ% of the full rated load across the speciﬁed input voltage range. Lower than 1ꢀ% 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 2.2μs and output capacitance of 1ꢀμF, are shown in the table below. The product

series will start into a capacitance of 47μF with an increased start time, however, the maximum recommended output capacitance is 1ꢀμF.

Typical Start-Up Wave Form

Start-up time

μs

Start-up time

μs

NMHꢀ5ꢀ5SC

NMHꢀ5ꢀ9SC

NMHꢀ512SC

NMHꢀ515SC

NMH12ꢀ5SC

NMH12ꢀ9SC

NMH1212SC

NMH1215SC

1ꢀ72

2481

3546

538ꢀ

672

NMH24ꢀ5SC

NMH24ꢀ9SC

NMH2412SC

NMH2415SC

NMH48ꢀ5SC

NMH48ꢀ9SC

NMH4812SC

NMH4815SC

1ꢀ64

1544

4398

423ꢀ

966

1152

158ꢀ

315ꢀ

122ꢀ

2822

4275

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KDC_NMH.E03 Page 3 of 6

NMH Series

Isolated 2W Dual Output DC/DC Converters

APPLICATION NOTES (continued)

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

1ꢀμF 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 1ꢀꢀmꢁ at 1ꢀꢀ kHz

1ꢀꢀnF multilayer ceramic capacitor, general purpose

45ꢀꢁ resistor, carbon ﬁlm, 1% tolerance

5ꢀꢁ 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 1ꢀ to obtain the speciﬁed values.

Differential Mode Noise Test Schematic

DC/DC Converter

OSCILLOSCOPE

Y INPUT

C1 C2 C3

Input

Output

SUPPLY

R LOAD

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 that 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 >2ꢀMHz.

Power

Source

Load

Inductor Order Codes

SMD

Order Code

L (μH)

C (μF)

Through Hole

11R473C

11R154C

11R1ꢀ4C

11R473C

11R154C

11R1ꢀ4C

11R473C

11R154C

11R1ꢀ4C

11R473C

11R154C

11R1ꢀ4C

NMHꢀ5ꢀ5XC

NMHꢀ5ꢀ9XC

NMHꢀ512XC

NMHꢀ515XC

NMH12ꢀ5XC

NMH12ꢀ9XC

NMH1212XC

NMH1215XC

NMH24ꢀ5XC

NMH24ꢀ9XC

NMH2412XC

NMH2415XC

NMH48ꢀ5XC

NMH48ꢀ9XC

NMH4812XC

NMH4815XC

82473C

82154C

821ꢀ4C

82473C

82154C

821ꢀ4C

82473C

82154C

821ꢀ4C

82473C

82154C

821ꢀ4C

4.7

2.2

3.3

4.7

2.2

3.3

4.7

2.2

3.3

4.7

2.2

3.3

15ꢀ

1ꢀꢀ

Product speciﬁcation for MPS inductors can be found at:

11ꢀꢀR Series (Through Hole)

http://www.murata-ps.com/data/magnetics/kmp_11ꢀꢀr.pdf

15ꢀ

1ꢀꢀ

82ꢀꢀ Series (SMD)

http://www.murata-ps.com/data/magnetics/kmp_82ꢀꢀc.pdf

15ꢀ

1ꢀꢀ

15ꢀ

1ꢀꢀ

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KDC_NMH.E03 Page 4 of 6

NMH Series

Isolated 2W Dual Output DC/DC Converters

PACKAGE SPECIFICATIONS

MECHANICAL DIMENSIONS

DIP package

PIN CONNECTIONS - 14 PIN DIP

SIP package

Function

-VIN

ꢀ.77 (19.5ꢀ)

ꢀ.77

(19.5ꢀ)

ꢀ.39

(9.8ꢀ)

NMH0505DC

ꢀ.295

(7.5ꢀ)

+V^OUT

-VOUT

+VIN

XYYWWi

ꢀ.4

ꢀ.3ꢀ3

(7.7ꢀ)

(1ꢀ.ꢀꢀ)

NMH0505SC

ꢀ.ꢀ22 (ꢀ.55)

ꢀ.ꢀ178 (ꢀ.45)

XYYWWi

PIN CONNECTIONS - 7 PIN SIP

ꢀ.181 (4.6ꢀ)

ꢀ.142 (3.6ꢀ)

ꢀ.181 (4.6ꢀ)

ꢀ.142 (3.6ꢀ)

Function

+VIN

ꢀ.1 (2.54)

ꢀ.ꢀ22 (ꢀ.55)

ꢀ.ꢀ178 (ꢀ.45)

ꢀ.ꢀ43

-VIN

ꢀ.ꢀ22 (ꢀ.55)

ꢀ.ꢀ178 (ꢀ.45)

ꢀ.ꢀ79

(2.ꢀꢀ)

(1.ꢀ9)

-VOUT

ꢀ.ꢀ118 (ꢀ.3ꢀ)

ꢀ.ꢀꢀ78 (ꢀ.2ꢀ)

ꢀ.3 (7.62)

ꢀ.ꢀ118 (ꢀ.3ꢀ)

ꢀ.ꢀꢀ78 (ꢀ.2ꢀ)

+V^OUT

ꢀ.ꢀ5

ꢀ.5 (12.7ꢀ)

(1.25)

ꢀ.ꢀ84

(2.13)

ꢀ.6 (15.24)

Weight: 2.85g (DIP) 2.76g (SIP)

All dimensions in inches ꢀ.ꢀ1 (mm ꢀ.25mm). All pins on a ꢀ.1 (2.54) pitch and within ꢀ.ꢀ1 (ꢀ.25) of true position.

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KDC_NMH.E03 Page 5 of 6

NMH Series

Isolated 2W Dual Output DC/DC Converters

PACKAGE SPECIFICATIONS (continued)

RECOMMENDED FOOTPRINT DETAILS

14 Pin DIP Package

7 Pin SIP Package

ꢀ.ꢀ45 (1.15)

ꢀ.ꢀ39 (1.ꢀꢀ)

5 HOLES

ꢀ.ꢀ45 (1.15)

ꢀ.ꢀ39 (1.ꢀꢀ)

5 HOLES

ꢀ.ꢀꢀ394 (ꢀ.1)

ꢀ.ꢀꢀ394 (ꢀ.1

ꢀ.1 (2.54)

TUBE OUTLINE DIMENSIONS

7 Pin SIP Tube

14 Pin DIP Tube

ꢀꢁꢍꢋꢋꢅꢆꢊꢁꢍꢀꢈꢅ

ꢀꢁꢂꢃꢄꢅꢆꢇꢄꢁꢀꢅꢈ

ꢀꢁꢇꢊꢊꢅꢆꢉꢁꢀꢃꢈ

ꢀꢁꢇꢊꢊꢅꢆꢉꢁꢀꢉꢈ

ꢀꢁꢀꢄꢋꢅꢆꢀꢁꢋꢉꢈꢅ

Unless otherwise stated all dimensions in inches (mm) ꢀ.5mm.

Tube length (14 Pin DIP) : 2ꢀ.47 (52ꢀmm 2mm).

Tube length (7 Pin SIP) : 2ꢀ.47 (52ꢀmm 2mm).

ꢀꢁꢄꢅꢆꢉꢁꢀꢀꢈꢅ

Tube Quantity : 25

This product is subject to the following operating requirements

and the Life and Safety Critical Application Sales Policy:

Refer to: http://www.murata-ps.com/requirements/

Murata Power Solutions, Inc.

11 Cabot Boulevard, Mansﬁeld, MA ꢀ2ꢀ48-1151 U.S.A.

ISO 9ꢀꢀ1 and 14ꢀꢀ1 REGISTERED

Murata Power Solutions, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other

technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply

the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Speciﬁcations are subject to change without

notice.

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KDC_NMH.E03 Page 6 of 6

NMH1205DV [MURATA]

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