LSN2-T/6-D12 datasheet, PDF - EEWORLD Datasheet

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LSN2-T/6-D12: DescriptionNon-isolated, DOSA-SIP, 6/10/16A Selectable-Output DC/DC Converters; File Size293KB，15 Pages; ManufacturerMurata; Websitehttps://www.murata.com

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LSN2-T/6-D12 Overview

Non-isolated, DOSA-SIP, 6/10/16A Selectable-Output DC/DC Converters

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www.murata-ps.com

LSN2 Series

Non-isolated, DOSA-SIP, 6/10/16A

Selectable-Output DC/DC Converters

ORDERING GUIDE SUMMARY

Model

LSN2-T/6-W3

LSN2-T/6-D12

LSN2-T/10-W3

LSN2-T/10-D12

LSN2-T/16-W3

LSN2-T/16-D12

OUT

Range

0.75-3.3V

0.75-5V

0.75-3.3V

0.75-5V

0.75-3.3V

0.75-5V

OUT

Range

0-6A

0-10A

0-16A

Range

2.4-5.5V

8.3-14V

2.4-5.5V

8.3-14V

2.4-5.5V

8.3-14V

Ripple/Noise

15mVp-p

30mVp-p

25mVp-p

30mVp-p

Efﬁciency

94%

93%

95%

94%

Typical Unit

INPUT CHARACTERISTICS

Parameter

Voltage Range

Typ. @ 25°C, full load

2.4-5.5 or 8.3-14V

4.22 to 11.12A

Included

60mA

Positive or negative polarity

Notes

5V or 12V nominal models

Model dependent

With autorestart hysteresis

Output is short circuited

Default polarity is positive

FEATURES

■

Current, full power

Undervoltage Shutdown

Short Circuit Current

Remote On/Off Control

OUTPUT CHARACTERISTICS

Parameter

Voltage

Current

Power Dissipation

Accuracy

Ripple & Noise

Line and Load Regulation

Overcurrent Protection

Overtemperature Protection

Efﬁciency (minimum)

Efﬁciency (typical)

GENERAL SPECIFICATIONS

Parameter

Transient Response

Operating Temperature Range

Safety (designed to meet)

EMI (designed to meet)

MECHANICAL CHARACTERISTICS

6 Amp output models

10 & 16 Amp models

User-selectable outputs: 0.75-5V

(D12 models) or 0.75-3.3V (W3 models)

6, 10 or 16A maximum output current

Double lead free to RoHS standards

Selectable phased start-up sequencing

and tracking

Wide range V

8.3-14V or 2.4-5.5V

Up to 52 Watts total output power

Very high efﬁciency up to 95%

Starts up into pre-biased load

Fast settling, high di/dt I

OUT

slew rate

■

Typ. @ 25°C, full load

0.75-3.3 or 0.75-5V

0-6, 0-10 or 0-16A

20, 33, 52W max.

±2% of V

NOM

15-75mVpp

±0.03%

Hiccup autorecovery

+115°C shutdown

92-93%

94-95%

Notes

User adjustable, model dependent

Three ranges, model dependent

Three values, model dependent

50% load

Model dependent

Continuous short circuit protection

Model dependent

■

PRODUCT OVERVIEW

These miniature point-of-load (POL) switching

DC/DC converters are ideal regulation and supply

elements for distributed power and intermedi-

ate bus architectures. Fully compatible with

the Distributed-power Open Standards Alliance

speciﬁcation (www.dosapower.com), LSN2’s can

power CPU’s, programmable logic and mixed-

voltage systems with little heat and low noise. A

typical application uses a master isolated 12 or

5Vdc supply and individual LSN2 converters for

local 1.8 and 3.3Vdc supplies. All system isolation

resides in the central supply, leaving lower cost

POL regulation at the load. The LSN2’s can deliver

very high power (to 52 Watts) in a tiny area with-

out heat sinking or external components. They

feature quick transient response (to 25μsec) and

very fast current slew rates (to 20A/μsec).

Typ. @ 25°C, full load

25μsec

–40 to +85°C

UL/IEC/EN 60950-1

FCC pt.15, class B

Notes

50% load step to 2% of ﬁnal value

With 200 lfm airﬂow

And CSA C22.2-No.234

May need external ﬁlter

0.50 x 1.00 x 0.275 inches (12.7 x 25.4 x 6.98 mm)

0.50 x 2.00 x 0.32 inches (12.7 x 50.8 x 8.13 mm)

Lead-free

construction/attach

For full details go to

www.murata-ps.com/rohs

www.murata-ps.com

Technical enquiries

email: sales@murata-ps.com, tel:

+1 508 339 3000

MDC_LSN2.B06

Page 1 of 15

LSN2 Series

Non-isolated, DOSA-SIP, 6/10/16A

Selectable-Output DC/DC Converters

PERFORMANCE/FUNCTIONAL SPECIFICATION NOTES

All models are tested and speciﬁed with external 1 || 10μF ceramic/tantalum output capacitors and

a 22μF external input capacitor. All capacitors are low ESR types. These capacitors are necessary

to accommodate our test equipment and may not be required to achieve speciﬁed performance in

your applications. All models are stable and regulate within spec under no-load conditions.

General conditions for Speciﬁcations are +25°C, V

= nominal, V

OUT

= nominal, full load. “Nominal”

output voltage is +5V for D12 models and +3.3V for W3 models.

(2)

Input Back Ripple Current is tested and speciﬁed over a 5-20MHz bandwidth. Input ﬁltering is

= 2 x 100μF tantalum, C

BUS

= 1000μF electrolytic, L

BUS

= 1μH.

(3)

Note that Maximum Power Derating curves indicate an average current at nominal input voltage. At

higher temperatures and/or lower airﬂow, the DC/DC converter will tolerate brief full current outputs

if the total RMS current over time does not exceed the derating curve.

(4)

Mean Time Before Failure is calculated using the Telcordia (Belcore) SR-332 Method 1, Case 3,

ground ﬁxed conditions, T

PCBOARD

= +25°C, full output load, natural air convection.

(5)

The On/Off Control may be driven with external logic or by applying appropriate external voltages

which are referenced to –Input Common. The On/Off Control Input should use either an open

collector/open drain transistor or logic gate which does not exceed +V

. A 68K: external pullup

resistor to +V

will cause the “ON” state for negative logic models.

(6)

Short circuit shutdown begins when the output voltage under increasing load degrades approxi-

mately 2% from the selected setting.

(7)

If Sense is connected remotely at the load, up to 0.5 Volts difference is allowed between the Sense

and +V

OUT

pins to compensate for ohmic voltage drop in the power lines. A larger voltage drop may

cause the converter to exceed maximum power dissipation.

(8)

Output noise may be further reduced by adding an external ﬁlter. See I/O Filtering and Noise Reduction.

(9)

All models are fully operational and meet published speciﬁcations, including “cold start” at –40°C.

OUT

is nominal.

(10)

Regulation speciﬁcations describe the deviation as the line input voltage or output load current is

varied from a nominal midpoint value to either extreme.

(11)

Other input or output voltage ranges are available under scheduled quantity special order.

(12)

Maximum PC board temperature is measured with the sensor in the center.

(13)

Do not exceed maximum power speciﬁcations when adjusting the output trim.

(14)

When Sequencing is not used, the Power Good output is TRUE at any time the output is within

approximately ±10% of the voltage set point. Power Good basically indicates if the converter is in

regulation. Power Good detects Over Temperature if the PWM has shut down due to OT. Power

Good does not directly detect Over Current.

If Sequencing is in progress, Power Good will falsely indicate TRUE (valid) before the output

reaches its setpoint. Ignore Power Good if Sequencing is in transition.

(15)

The maximum output capacitive loads depend on the the Equivalent Series Resistance (ESR) of

the external output capacitor.

(16)

Do not use Pre-bias startup and sequencing together. See Technical Notes below.

(17)

After short circuit shutdown, if the load is partially removed such that the load still exceeds the

overcurrent (OC) detection, the converter will remain in hiccup restart mode.

(18)

For best noise performance, leave the Track/Sequence pin OPEN when not used.

(1)

ABSOLUTE MAXIMUM RATINGS

Input Voltage

(Continuous or transient)

W3 models

12V models

On/Off Control

Input Reverse Polarity Protection

Output Current

(7)

Storage Temperature

Lead Temperature

+7 Volts

+15 Volts

–0.3V min. to +V

max.

See Fuse section

Current-limited. Devices can

withstand sustained short circuit

without damage.

–55 to +125°C

See soldering guidelines

These are stress ratings. Exposure of devices to greater than any of these conditions may

adversely affect long-term reliability. Proper operation under conditions other than those listed in

the Performance/Functional Speciﬁcations Table is not implied.

Soldering Guidelines

Murata Power Solutions recommends the speciﬁcations below when installing these

converters. These speciﬁcations vary depending on the solder type. Exceeding these

speciﬁcations may cause damage to the product. Be cautious when there is high atmo-

spheric humidity. We strongly recommend a mild pre-bake (100° C. for 30 minutes). Your

production environment may differ; therefore please thoroughly review these guidelines

with your process engineers.

Wave Solder Operations for through-hole mounted products (THMT)

For Sn/Ag/Cu based solders:

Maximum Preheat Temperature

Maximum Pot Temperature

Maximum Solder Dwell Time

For Sn/Pb based solders:

Maximum Preheat Temperature

Maximum Pot Temperature

Maximum Solder Dwell Time

105° C.

250° C.

6 seconds

115° C.

270° C.

7 seconds

www.murata-ps.com

Technical enquiries

email: sales@murata-ps.com, tel:

+1 508 339 3000

MDC_LSN2.B06

Page 4 of 15

LSN2-T/6-D12 Related Products

	LSN2-T/6-D12	LSN2-T/10-W3	LSN2-T/6-W3	LSN2A	LSN2-T/10-D12	LSN2-T/16-D12	LSN2-T/16-W3	LSN2-T/30-D12
Description	Non-isolated, DOSA-SIP, 6/10/16A Selectable-Output DC/DC Converters	Non-isolated, DOSA-SIP, 6/10/16A Selectable-Output DC/DC Converters	Non-isolated, DOSA-SIP, 6/10/16A Selectable-Output DC/DC Converters	Non-isolated, DOSA-SIP, 6/10/16A Selectable-Output DC/DC Converters	Non-isolated, DOSA-SIP, 6/10/16A Selectable-Output DC/DC Converters	Non-isolated, DOSA-SIP, 6/10/16A Selectable-Output DC/DC Converters	Non-isolated, DOSA-SIP, 6/10/16A Selectable-Output DC/DC Converters	Non-isolated, DOSA-SIP, 6/10/16A Selectable-Output DC/DC Converters

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