OKL-T/6-W5P-C/S_技术文档

OKL-T/6-W5 Series

www.murata-ps.com

Programmable Output 6-Amp iLGA SMT PoLs

Typical unit

FEATURES

PRODUCT OVERVIEW

The OKL-T/6-W5 series are non-isolated

Point-of-Load (PoL) DC/DC power converters for

embedded applications. Featuring inspectable Land These converters also include under voltage lock

Grid Array (LGA) format, the OKL-T/6-W5 measures out (UVLO), output short circuit protection, over-

only 0.48 x 0.48 x 0.283 inches max. (12.2 x 12.2

x 7.2 mm max.).

The wide input range is 2.4 to 5.5 Volts DC.

The maximum output current is 6 Amps. Based

on ﬁxed-frequency synchronous buck converter

switching topology, the high power conversion

efﬁcient Point of Load (PoL) module features

programmable output voltage and On/Off control.

■ 2.4-5.5Vdc input voltage range

■ Programmable output voltage from 0.6-3.3Vdc

■ High power conversion efﬁciency at 93.5%

■ Inspectable Land Grid Array

current and over temperature protections.

An optional sequence/tracking feature allows

power sequencing of PoL’s. These units are certi-

ﬁed to all standard UL/EN/IEC 60950-1 safety

certiﬁcations (2nd Edition) and RoHS-6 hazardous

substance compliance.

■ Drives up to 300 μF ceramic capacitive loads

■ On/Off control

■ Optional Sequence/Tracking operation

■ Outstanding thermal derating performance

■ Over temperature and over current protection

■ Certiﬁed to UL/EN/IEC 60950-1 safety, 2nd Edition

■ RoHS-6 hazardous substance compliance

Connection Diagram

+Vin

+Vout

Sense

tꢀ4XJUDIJOH

F1

On/Off

Control

tꢀ'JMUFST

Controller

tꢀ$VSSFOUꢀ4FOTF

External

DC

Trim

Power

Source

Reference and

Error Ampliﬁer

Open = On

Closed = Off

(Positive

On/Off)

Common

Sequence/Tracking

(OKL2 Models)

Figure 1. OKL-T/6-W5

Note: Murata Power Solutions strongly recommends an external input fuse, F1. See speciﬁcations.

For full details go to

www.murata-ps.com/rohs

www.murata-ps.com/support

MDC_OKL-T/6-W5 Series.C01 Page 1 of 17

OKL-T/6-W5 Series

Programmable Output 6-Amp iLGA SMT PoLs

PERFORMANCE SPECIFICATIONS SUMMARY AND ORDERING GUIDE

Output

Input

Package–Pinout P83

On/

Off

Logic

Efﬁciency

Seq/

Track

Model Number

Regulation (max.)

Vin nom. Range Iin, no load Iin, full load

Vout Iout (Amps, Power R/N (mV p-p)

Case C83

inches (mm)

(Volts) ➀

max.)

(Watts)

19.8

Max. ➃

(Volts) (Volts) (mA) ➄ (Amps) ➁

Line

Load

Min. Typ.

0.48x0.48x0.283 max

(12.2x12.2x7.2) max

0.48x0.48x0.283 max

(12.2x12.2x7.2) max

0.48x0.48x0.283 max

(12.2x12.2x7.2) max

0.48x0.48x0.283 max

(12.2x12.2x7.2) max

0.48x0.48x0.283 max

(12.2x12.2x7.2) max

0.48x0.48x0.283 max

(12.2x12.2x7.2) max

0.48x0.48x0.283 max

(12.2x12.2x7.2) max

0.48x0.48x0.283 max

(12.2x12.2x7.2) max

OKL-T/6-W5P-C

0.6-3.3

6

25

0.35% 0.35%

5

2.4-5.5

25

4.24

91.5% 93.5% Pos. no

91.5% 93.5% Neg. no

91.5% 93.5% Pos. yes

91.5% 93.5% Neg. yes

OKL-T/6-W5P-C/S 0.6-3.3

OKL-T/6-W5N-C 0.6-3.3

OKL-T/6-W5N-C/S 0.6-3.3

OKL2-T/6-W5P-C 0.6-3.3

OKL2-T/6-W5P-C/S 0.6-3.3

OKL2-T/6-W5N-C 0.6-3.3

OKL2-T/6-W5N-C/S 0.6-3.3

25

I/O caps are necessary for our test equipment and may not be needed for your application.

Use adequate ground plane and copper thickness adjacent to the converter.

➀

➁

The output range (50% load) is limited by Vin. See detailed specs for full conditions.

➂

All speciﬁcations are at nominal line voltage, Vout=nominal (3.3V for W5 models) and full load,

+25 deg.C. unless otherwise noted.

Ripple and Noise (R/N) are shown at Vout=1V. See specs for details.

➄No load input current is shown at Vout = 3.3V.

Output capacitors are 10 μF ceramic. Input cap is 22 μF. See detailed speciﬁcations.

PART NUMBER STRUCTURE

OK L 2 - T / 6 - W5 N - C / S

Non-isolated PoL

Packaging

Blank = standard (400 units per reel)

S = small (100 units per reel)

LGA Surface Mount

Sequence/tracking

Blank = Not installed

2 = Installed

RoHS Hazardous

Substance Compliance

C = RoHS-6 (does not claim EU RoHS exemption

7b–lead in solder)

Trimmable Output

Voltage Range

0.6-3.3Vdc

On/Off Logic

P = Positive Logic

N = Negative Logic

Maximum Rated Output

Current in Amps

Input Voltage Range

2.4-5.5Vdc

Product Label

Because of the small size of these products, the product label contains a

character-reduced code to indicate the model number and manufacturing date

code. Not all items on the label are always used. Please note that the label

differs from the product photograph. Here is the layout of the label:

Model Number

Product Code

OKL-T/6-W5P-C

OKL-T/6-W5P-C/S

OKL-T/6-W5N-C

OKL-T/6-W5N-C/S

OKL2-T/6-W5P-C

OKL2-T/6-W5P-C/S

OKL2-T/6-W5N-C

OKL2-T/6-W5N-C/S

L01006

L00006

L21006

L20006

XXXXXX

Product code

Revision level

Mfg.

date

code

YMDX Rev.

The manufacturing date code is four characters:

Figure 2. Label Artwork Layout

First character – Last digit of manufacturing year, example 2009

Second character – Month code (1 through 9 = Jan-Sep;

O, N, D = Oct, Nov, Dec)

The label contains three rows of information:

Third character – Day code (1 through 9 = 1 to 9, 10 = 0 and

11 through 31 = A through Z)

Fourth character – Manufacturing information

First row – Murata Power Solutions logo

Second row – Model number product code (see table)

Third row – Manufacturing date code and revision level

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MDC_OKL-T/6-W5 Series.C01 Page 2 of 17

OKL-T/6-W5 Series

Programmable Output 6-Amp iLGA SMT PoLs

Performance and Functional Speciﬁcations

See Note 1

Dynamic Characteristics

Input

Dynamic Load Response

50ꢀSec max. to within 2% of ﬁnal value

Input Voltage Range

Isolation

See Ordering Guide and Note 7.

Not isolated

2.05 V

(50-100% load step, di/dt=1A/µSec)

Peak Deviation

(Note 1)

350 mV

Start-Up Voltage

Start-Up Time

(Vin on or On/Off to Vout regulated)

6 mSec for Vout=nominal (Vin On)

6 mSec for Vout=nominal (Remote On/Off)

Undervoltage Shutdown (see Note 15)

Overvoltage Shutdown

1.92 V

None

100 kHz

Switching Frequency

600 KHz

Reﬂected (Back) Ripple Current (Note 2) TBD mA pk-pk

Internal Input Filter Type

Capacitive

Environmental

OKL Models

Recommended External Fuse

Reverse Polarity Protection

TBD

Calculated MTBF (hours)

Telecordia method (4a)

OKL2 Models

5,341

None, Install external fuse

5,573,000

,000

Input Current:

Full Load Conditions

Inrush Transient

Shutdown Mode (Off, UV, OT)

Output in Short Circuit

Low Line (Vin=Vmin)

(hours)

Calculated MTBF

See Ordering Guide

4,383,000

MIL-HDBK-217N2 method (4b)

4,221,000

A²Sec.

TBD

Operating Temperature Range (Ambient, all output ranges)

1 mA

10 mA

4.68 A (Vout = 3.3V)

See derating curves

Storage Temperature Range

Thermal Protection/Shutdown

MSL Rating

-40 to +85 °C. with derating (Note 9)

-55 to +125 °C.

Included in PWM

2

Remote On/Off Control (Note 5)

Negative Logic

ON = Open pin or -0.2V to Vin -1.6V max.

OFF = Vin -0.8V min. to +Vin max.

ON = Open pin (internally pulled up) or

+1.2V to +Vin max.

Relative Humidity

To 85%/+85 C., non-condensing

°

Positive Logic

Physical

OFF = -0.3V to +0.3V max. or ground

TBD

Outline Dimensions

Weight

See Mechanical Speciﬁcations

0.06 ounces (1.6 grams)

Current

Tracking/Sequencing (optional)

Slew Rate

Tracking accuracy, rising input

Tracking accuracy, falling input

See technical note on page 15

2 Volts per millisecond, max.

Vout = 100 mV of Sequence In

Plating Thickness

Gold overplate 1.18μ" (0.03μm)

on Nickel subplate 118.1μ" (3.0μm)

Safety

Certiﬁed to UL/cUL 60950-1, CSA-

C22.2 No. 60950-1, IEC/EN 60950-1,

2nd Edition

Output

Output Power

20.2W max.

RoHS-6 (does not claim EU RoHS exemption

7b–lead in solder)

Restriction of Hazardous Substances

Output Voltage Range

See Ordering Guide

No minimum load

2 % of Vnominal

See Ordering Guide

None

Minimum Loading

Absolute Maximum Ratings

Accuracy (50% load, untrimmed)

Voltage Output Range (Note 13)

Overvoltage Protection (Note 16)

Temperature Coefﬁcient

Ripple/Noise (20 MHz bandwidth)

Line/Load Regulation

Input Voltage (Continuous or transient)

On/Off Control

0 V. to +6 Volts max.

0 V. min. to +Vin max.

Input Reverse Polarity Protection

Output Current (Note 7)

None, Install external fuse

TBD

Current-limited. Devices can withstand a

sustained short circuit without damage.

The outputs are not intended to accept

appreciable reverse current.

See Ordering Guide and note 8

See Ordering Guide and note 10

See Ordering Guide

Efﬁciency

Storage Temperature

Lead Temperature

-55 to +125 °C.

Maximum Capacitive Loading (Note 14)

Cap-ESR=0.001 to 0.01 Ohms

Cap-ESR >0.01 Ohms

See soldering speciﬁcations

300 ꢀF

TBD

Absolute maximums are stress ratings. Exposure of devices to greater than any of

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 nor recommended.

Current Limit Inception (Note 6)

(98% of Vout setting, after warm up) 12 Amps

Short Circuit Mode

Short Circuit Current Output

Protection Method

10 mA

Speciﬁcation Notes:

Hiccup autorecovery upon overload

removal. (Note 17)

Continuous, no damage

(output shorted to ground)

Converter will start up if the external

output voltage is less than Vnominal.

(1) Speciﬁcations are typical at +25 °C, Vin=nominal (+5V), Vout=nominal (+3.3V), full load, external caps and

natural convection unless otherwise indicated. Extended tests at full power must supply substantial forced airﬂow.

Short Circuit Duration

Prebias Startup

All models are tested and speciﬁed with external 10ꢀF ceramic output capacitors and a 22 ꢀF 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. However, Murata

Power Solutions recommends installation of these capacitors. All models are stable and regulate within

spec under no-load conditions.

(2) Input Back Ripple Current is tested and speciﬁed over a 5 Hz to 20 MHz bandwidth. Input ﬁltering is Cin=2 x

100 ꢀF ceramic, Cbus=1000 ꢀF electrolytic, Lbus=1 ꢀH.

(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.

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MDC_OKL-T/6-W5 Series.C01 Page 3 of 17

OKL-T/6-W5 Series

Programmable Output 6-Amp iLGA SMT PoLs

Speciﬁcation Notes, Cont.:

(4a) Mean Time Before Failure is calculated using the Telcordia (Belcore) SR-332 Method 1, Case 3, ground ﬁxed

conditions, Tpcboard=+25 ˚C, full output load, natural air convection.

(12) Maximum PC board temperature is measured with the sensor in the center of the converter.

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

(4b) Mean Time Before Failure is calculated using the MIL-HDBK-217N2 method, ground benign, +25ºC., full output

load, natural convection.

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

output capacitor and, to a lesser extent, the distance and series impedance to the load. Larger caps will reduce

output noise but may change the transient response. Newer ceramic caps with very low ESR may require lower

capacitor values to avoid instability. Thoroughly test your capacitors in the application. Please refer to the Output

Capacitive Load Application Note.

(5) The On/Off Control Input should use either a switch or an open collector/open drain transistor referenced to

-Input Common. A logic gate may also be used by applying appropriate external voltages which do not exceed

+Vin.

(6) Short circuit shutdown begins when the output voltage degrades approximately 2% from the selected setting.

(7) Please observe the voltage input and output speciﬁcations in the Voltage Range Graph on page 17.

(15) Do not allow the input voltage to degrade lower than the input undervoltage shutdown voltage at all times.

Otherwise, you risk having the converter turn off. The undervoltage shutdown is not latching and will attempt to

recover when the input is brought back into normal operating range.

(8) Output noise may be further reduced by adding an external ﬁlter. At zero output current, the output may contain

low frequency components which exceed the ripple speciﬁcation. The output may be operated indeﬁnitely with

no load.

(16) The outputs are not intended to sink appreciable reverse current.

(17) “Hiccup” overcurrent operation repeatedly attempts to restart the converter with a brief, full-current output. If

the overcurrent condition still exists, the restart current will be removed and then tried again. This short current

pulse prevents overheating and damaging the converter. Once the fault is removed, the converter immediately

recovers normal operation.

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

(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 will be reviewed under scheduled quantity special order.

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MDC_OKL-T/6-W5 Series.C01 Page 4 of 17

OKL-T/6-W5 Series

Programmable Output 6-Amp iLGA SMT PoLs

PERFORMANCE DATA, OKL-T/6-W5

Efﬁciency vs. Line Voltage and Load Current @ +25°C (VOUT = 3.3V)

Maximum Current Temperature Derating at Sea Level

(V^IN= 5V, VOUT = 3.3V).

100

7

6

5

4

3

2

1

0

Natural convection

95

VIN = 4V

V^IN= 5V

V^IN= 5.5V

90

0

1

2

3

4

5

6

Load Current (Amps)

20

25

30

35

40

45

50

55

60

65

70

75

80

85

90

Ambient Temperature (ºC)

Output Ripple and Noise (Vin=5V, Vout=3.3V, Iout=6A, ScopeBW=20MHz)

On/Off Enable Startup (Vin=5V, Vout=3.3V, Iout=6A, Cload=0)

Trace 4=Enable, Trace2=Vout

Step Load Transient Response (Vin=5V, Vout=3.3V, Iout=6A to 3A)

Trace 2=Vout, 200 mV/div. Trace 4=Iout, 5A/div.

Step Load Transient Response (Vin=5V, Vout=3.3V, Iout=3A to 6A)

Trace 2=Vout, 200 mV/div. Trace 4=Iout, 5A/div.

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MDC_OKL-T/6-W5 Series.C01 Page 5 of 17

OKL-T/6-W5 Series

Programmable Output 6-Amp iLGA SMT PoLs

PERFORMANCE DATA, OKL-T/6-W5

Efﬁciency vs. Line Voltage and Load Current @ +25°C (VOUT = 2.5V)

Maximum Current Temperature Derating at Sea Level

(V^IN= 5V, VOUT = 2.5V).

100

95

7

6

5

4

3

2

1

0

Natural convection

VIN = 3V

V^IN= 5V

90

V^IN= 5.5V

85

0

1

2

3

4

5

6

Load Current (Amps)

20

25

30

35

40

45

50

55

60

65

70

75

80

85

90

Ambient Temperature (ºC)

Output Ripple and Noise (Vin=5V, Vout=2.5V, Iout=6A, ScopeBW=20MHz)

On/Off Enable Startup (Vin=5V, Vout=2.5V, Iout=6A, Cload=0)

Trace 4=Enable, Trace2=Vout

Step Load Transient Response (Vin=5V, Vout=2.5V, Iout=6A to 3A)

Trace 2=Vout, 200 mV/div. Trace 4=Iout, 5A/div.

Step Load Transient Response (Vin=5V, Vout=2.5V, Iout=3A to 6A)

Trace 2=Vout, 200 mV/div. Trace 4=Iout, 5A/div.

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MDC_OKL-T/6-W5 Series.C01 Page 6 of 17

OKL-T/6-W5 Series

Programmable Output 6-Amp iLGA SMT PoLs

PERFORMANCE DATA, OKL-T/6-W5

Efﬁciency vs. Line Voltage and Load Current @ +25°C (VOUT = 1.8V)

Maximum Current Temperature Derating at Sea Level

(V^IN= 5V, VOUT = 1.8V).

100

95

7

6

5

4

3

2

1

0

Natural convection

90

VIN = 2.4V

85

V^IN= 5V

V^IN= 5.5V

80

0

1

2

3

4

5

6

Load Current (Amps)

20

25

30

35

40

45

50

55

60

65

70

75

80

85

90

Ambient Temperature (ºC)

Output Ripple and Noise (Vin=5V, Vout=1.8V, Iout=6A, ScopeBW=20MHz)

On/Off Enable Startup (Vin=5V, Vout=1.8V, Iout=6A, Cload=0)

Trace 4=Enable, Trace2=Vout

Step Load Transient Response (Vin=5V, Vout=1.8V, Iout=6A to 3A)

Trace 2=Vout, 200 mV/div. Trace 4=Iout, 5A/div.

Step Load Transient Response (Vin=5V, Vout=1.8V, Iout=3A to 6A)

Trace 2=Vout, 200 mV/div. Trace 4=Iout, 5A/div.

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MDC_OKL-T/6-W5 Series.C01 Page 7 of 17

OKL-T/6-W5 Series

Programmable Output 6-Amp iLGA SMT PoLs

PERFORMANCE DATA, OKL-T/6-W5

Efﬁciency vs. Line Voltage and Load Current @ +25°C (VOUT = 1.5V)

Maximum Current Temperature Derating at Sea Level

(V^IN= 5V, VOUT = 1.5V).

100

95

7

6

5

4

3

2

1

0

Natural convection

90

VIN = 2.4V

85

V^IN= 5V

V^IN= 5.5V

80

75

0

1

2

3

4

5

6

Load Current (Amps)

20

25

30

35

40

45

50

55

60

65

70

75

80

85

90

Ambient Temperature (ºC)

Output Ripple and Noise (Vin=5V, Vout=1.5V, Iout=6A, ScopeBW=20MHz)

On/Off Enable Startup (Vin=5V, Vout=1.5V, Iout=6A, Cload=0)

Trace 4=Enable, Trace2=Vout

Step Load Transient Response (Vin=5V, Vout=1.5V, Iout=6A to 3A)

Trace 2=Vout, 200 mV/div. Trace 4=Iout, 5A/div.

Step Load Transient Response (Vin=5V, Vout=1.5V, Iout=3A to 6A)

Trace 2=Vout, 200 mV/div. Trace 4=Iout, 5A/div.

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MDC_OKL-T/6-W5 Series.C01 Page 8 of 17

OKL-T/6-W5 Series

Programmable Output 6-Amp iLGA SMT PoLs

PERFORMANCE DATA, OKL-T/6-W5

Efﬁciency vs. Line Voltage and Load Current @ +25°C (VOUT = 1.2V)

Maximum Current Temperature Derating at Sea Level

(V^IN= 5V, VOUT = 1.2V).

100

95

7

6

5

4

3

2

1

0

Natural convection

90

85

VIN = 2.4V

V^IN= 5V

80

V^IN= 5.5V

75

70

0

1

2

3

4

5

6

Load Current (Amps)

20

25

30

35

40

45

50

55

60

65

70

75

80

85

90

Ambient Temperature (ºC)

Output Ripple and Noise (Vin=5V, Vout=1.2V, Iout=6A, ScopeBW=20MHz)

On/Off Enable Startup (Vin=5V, Vout=1.2V, Iout=6A, Cload=0)

Trace 4=Enable, Trace2=Vout

Step Load Transient Response (Vin=5V, Vout=1.2V, Iout=6A to 3A)

Trace 2=Vout, 200 mV/div. Trace 4=Iout, 5A/div.

Step Load Transient Response (Vin=5V, Vout=1.2V, Iout=3A to 6A)

Trace 2=Vout, 200 mV/div. Trace 4=Iout, 5A/div.

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MDC_OKL-T/6-W5 Series.C01 Page 9 of 17

OKL-T/6-W5 Series

Programmable Output 6-Amp iLGA SMT PoLs

PERFORMANCE DATA, OKL-T/6-W5

Efﬁciency vs. Line Voltage and Load Current @ +25°C (VOUT = 1.0V)

Maximum Current Temperature Derating at Sea Level

(V^IN= 5V, VOUT = 1.0V).

100

95

7

6

5

4

3

2

1

0

Natural convection

90

85

VIN = 2.4V

80

V^IN= 5V

V^IN= 5.5V

75

70

0

1

2

3

4

5

6

Load Current (Amps)

20

25

30

35

40

45

50

55

60

65

70

75

80

85

90

Ambient Temperature (ºC)

Output Ripple and Noise (Vin=5V, Vout=1.0V, Iout=6A, ScopeBW=20MHz)

On/Off Enable Startup (Vin=5V, Vout=1.0V, Iout=6A, Cload=0)

Trace 4=Enable, Trace2=Vout

Step Load Transient Response (Vin=5V, Vout=1.0V, Iout=6A to 3A)

Trace 2=Vout, 200 mV/div. Trace 4=Iout, 5A/div.

Step Load Transient Response (Vin=5V, Vout=1.0V, Iout=3A to 6A)

Trace 2=Vout, 200 mV/div. Trace 4=Iout, 5A/div.

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MDC_OKL-T/6-W5 Series.C01 Page 10 of 17

OKL-T/6-W5 Series

Programmable Output 6-Amp iLGA SMT PoLs

MECHANICAL SPECIFICATIONS

Top View

INPUT/OUTPUT CONNECTIONS

0.043 (1.09)

NOM. PCB

THK

0.48

(12.19)

1

Function

On/Off Control*

VIN

Bottom View

2

3

Ground

4

V^OUT

5

Sense

6

7

8

9

10

11

12

Trim

Ground

0.48

(12.19)

No Connection

Sequence/Tracking**

No Connection

Side View

*The Remote On/Off can be provided with

either positive (P sufﬁx) or negative (N

sufﬁx) logic.

**OKL2 models only

0.283

(7.2)

max.

SOLDER PAD NOTES:

[1] To avoid incorrect contacts with exposed via’s and plated through holes on the bottom of the converter, do not have any

exposed copper around the unit aside from our recommended footprint. Except for connections to the pads, keep all external

circuits away from the board edges.

End View

[2] Do not connect any additional components between the Trim pin and Vout or between the Trim and Sense pins. Use only

the speciﬁed connections.

Recommended Footprint

-through the Board-

Bottom View

12.7

0.50

0.070-0.080 [1.78-2.03mm]

x

4.57

0.180

0.160-0.170 [4.06-4.32mm]

3 PLACES

3.43

0.135

1.14

0.045

1.27

0.050(14 PLS)

4

3

2

3

4

0.420 (10.67)

0.375 (9.53)

Vin

Gnd

Vin

4.57

0.180

3.43

0.135

12.40

0.488

1

5

11

6

12.7

0.50

On/Off

PG

Sense

NC

Sense

On/Off

0.240 (6.10)

0.150 (3.81)

1

C

L

2.29

0.090

10

11

6

NC

4.57

0.180

10

9

Seq

Trim

Gnd

NC

NC Trim1

NC Gnd

0.060 (1.52)

0

9

Seq

12

7

8

7

12

2.29

0.090

0.040-0.050 [1.02-1.27mm]

SQUARE PAD (9 PLS)

Dimensions are in inches (mm shown for ref. only).

4.57

2.29

0.180

0.090

Third Angle Projection

C

Copper Pads

L

Plating Thickness:

Gold overplate 1.18μ" (0.03μm)

on Nickel subplate 118.1μ" (3.0μm)

12.40

0.488

No Exposed

Copper

Permitted

Tolerances (unless otherwise speciﬁed):

.XX 0.02 (0.5)

.XXX 0.010 (0.25)

Angles 1˚

Figure 3. OKL-T/6-W5 Mechanical Outline

Components are shown for reference only.

www.murata-ps.com/support

MDC_OKL-T/6-W5 Series.C01 Page 11 of 17

OKL-T/6-W5 Series

Programmable Output 6-Amp iLGA SMT PoLs

TAPE AND REEL INFORMATION (MSL RATING 2)

Tape Detail

7.40 0.1

Round

Sprocket

Holes

2.00 0.1

4.00 0.1

0.40 0.05

+0.1

ø1.50

-0

16.00 0.1

B’

B

A

Vacuum Pickup

Point in Center

A’

Pulling direction

12.60 0.1

(7.0º)

Notes

1) The radius (R) is 0.3mm max.

2) Cumulative tolerance of 10 pitches of the sprocket hole is 0.2mm.

A-A’ SECTION

Reel Detail

Reel diameter 330.2

Start of

pocket tape

A

End of modules

C

B

Start of

modules

cover tape

in pockets

Reel Information (100 or 400 units per reel)

Hub diameter 13.00

Inner diameter 101.6

Key

Description

Length (mm)

All dimensions are in millimeters.

A

Tape trailer (no modules)

800 40

B

Pocket tape length before modules

Cover tape length before pocket tape

200 min.

C

240 40

www.murata-ps.com/support

MDC_OKL-T/6-W5 Series.C01 Page 12 of 17

OKL-T/6-W5 Series

Programmable Output 6-Amp iLGA SMT PoLs

TECHNICAL NOTES

Start-Up Delay

Assuming that the output current is set at the rated maximum, the Vin to

Vout Start-Up Delay (see Speciﬁcations) is the time interval between the

point when the rising input voltage crosses the Start-Up Threshold and the

fully loaded regulated output voltage enters and remains within its speciﬁed

regulation band. Actual measured times will vary with input source imped-

ance, external input capacitance, input voltage slew rate and ﬁnal value of

the input voltage as it appears at the converter.

Output Voltage Adustment

The output voltage may be adjusted over a limited range by connecting an

external trim resistor (Rtrim) between the Trim pin and Ground. The Rtrim resis-

tor must be a 1/10 Watt precision metal ﬁlm type, 0.5% accuracy or better

with low temperature coefﬁcient, 100 ppm/ C. or better. Mount the resistor

°

close to the converter with very short leads or use a surface mount trim resistor.

In the table below, the calculated resistance is given. Do not exceed the

speciﬁed limits of the output voltage or the converter’s maximum power rating

when applying these resistors. Also, avoid high noise at the Trim input. However,

to prevent instability, you should never connect any capacitors to Trim.

These converters include a soft start circuit to moderate the duty cycle of

the PWM controller at power up, thereby limiting the input inrush current.

The On/Off Remote Control interval from inception to Vout regulated

assumes that the converter already has its input voltage stabilized above

the Start-Up Threshold before the On command. The interval is measured

from the On command until the output enters and remains within its

speciﬁed accuracy band. The speciﬁcation assumes that the output is fully

loaded at maximum rated current.

Resistor Trim Equation, OKL-T/6-W5 models:

1.2

V^OUT– 0.6

___________

RTRIM (K) =

Output Voltage

3.3 V.

Calculated Rtrim (KΩ)

Recommended Input Filtering

0.444

0.632

1.0

The user must assure that the input source has low AC impedance to

provide dynamic stability and that the input supply has little or no inductive

content, including long distributed wiring to a remote power supply. The

converter will operate with no additional external capacitance if these

conditions are met.

2.5 V.

1.8 V.

1.5 V.

1.333

2.0

1.2 V.

1.0 V.

3.0

For best performance, we recommend installing a low-ESR capacitor

immediately adjacent to the converter’s input terminals. The capacitor

should be a ceramic type such as the Murata GRM32 series or a polymer

type. Initial suggested capacitor values are 10 to 22 μF, rated at twice the

expected maximum input voltage. Make sure that the input terminals do

not go below the undervoltage shutdown voltage at all times. More input

bulk capacitance may be added in parallel (either electrolytic or tantalum)

if needed.

0.6 V.

∞ (open)

Do not connect any additional components between the Vtrim pin and Vout

or between the Trim and Sense pins. Use only the speciﬁed connections as

recommended per this data sheet.

Input Fusing

Certain applications and/or safety agencies may require fuses at the inputs

of power conversion components. Fuses should also be used when there

is the possibility of sustained input voltage reversal which is not current-

limited. For greatest safety, we recommend a fast blow fuse installed in the

ungrounded input supply line.

Recommended Output Filtering

The converter will achieve its rated output ripple and noise with no

additional external capacitor. However, the user may install more exter-

nal output capacitance to reduce the ripple even further or for improved

dynamic response. Again, use low-ESR ceramic (Murata GRM32 series)

or polymer capacitors. Initial values of 10 to 47 μF may be tried, either

single or multiple capacitors in parallel. Mount these close to the converter.

Measure the output ripple under your load conditions.

The installer must observe all relevant safety standards and regulations.

For safety agency approvals, install the converter in compliance with the

end-user safety standard.

Input Under-Voltage Shutdown and Start-Up Threshold

Use only as much capacitance as required to achieve your ripple and

noise objectives. Excessive capacitance can make step load recovery

sluggish or possibly introduce instability. Do not exceed the maximum rated

output capacitance listed in the speciﬁcations.

Under normal start-up conditions, converters will not begin to regulate

properly until the rising input voltage exceeds and remains at the Start-Up

Threshold Voltage (see Speciﬁcations). Once operating, converters will not

turn off until the input voltage drops below the Under-Voltage Shutdown

Limit. Subsequent restart will not occur until the input voltage rises again

above the Start-Up Threshold. This built-in hysteresis prevents any unstable

on/off operation at a single input voltage.

Input Ripple Current and Output Noise

All models in this converter series are tested and speciﬁed for input

reﬂected ripple current and output noise using designated external input/

output components, circuits and layout as shown in the ﬁgures below. The

Cbus and Lbus components simulate a typical DC voltage bus. Please note

that the values of Cin, Lbus and Cbus will vary according to the speciﬁc

converter model.

Users should be aware however of input sources near the Under-Voltage

Shutdown whose voltage decays as input current is consumed (such as

capacitor inputs), the converter shuts off and then restarts as the external

capacitor recharges. Such situations could oscillate. To prevent this, make

sure the operating input voltage is well above the UV Shutdown voltage AT

ALL TIMES.

www.murata-ps.com/support

MDC_OKL-T/6-W5 Series.C01 Page 13 of 17

OKL-T/6-W5 Series

Programmable Output 6-Amp iLGA SMT PoLs

TO

CURRENT

PROBE

OSCILLOSCOPE

+VIN

-VIN

+VOUT

LBUS

+

–

+

–

VIN

CBUS

CIN

RLOAD

SCOPE

C1

C2

-VOUT

C

IN = 2 x 100μF, ESR < 700mΩ @ 100kHz

BUS = 1000μF, ESR < 100mΩ @ 100kHz

C

LBUS = 1μH

C1 = 1μF

C2 = 10μF

LOAD 2-3 INCHES (51-76mm) FROM MODULE

Figure 4. Measuring Input Ripple Current

Figure 5. Measuring Output Ripple and Noise (PARD)

Minimum Output Loading Requirements

Output Voltage Sequencing

The OKL modules include a sequencing feature that enables users to

implement various types of output voltage sequencing in their applications.

This is accomplished via an additional sequencing pin. When not using the

sequencing feature, either tie the sequence pin to Vin or leave it uncon-

nected.

All models regulate within speciﬁcation and are stable under no load to full

load conditions. Operation under no load might however slightly increase

output ripple and noise.

Thermal Shutdown

To prevent many over temperature problems and damage, these converters

include thermal shutdown circuitry. If environmental conditions cause the

temperature of the DC/DC’s to rise above the Operating Temperature Range

up to the shutdown temperature, an on-board electronic temperature

sensor will power down the unit. When the temperature decreases below

the turn-on threshold, the converter will automatically restart. There is a

small amount of hysteresis to prevent rapid on/off cycling.

When an analog voltage is applied to the sequence pin, the output

voltage tracks this voltage until the output reaches the set-point voltage.

The ﬁnal value of the sequence voltage must be set higher than the set-

point voltage of the module. The output voltage follows the voltage on the

sequence pin on a one-to-one volt basis. By connecting multiple modules

together, multiple modules can track their output voltages to the voltage

applied on the sequence pin.

CAUTION: If you operate too close to the thermal limits, the converter

may shut down suddenly without warning. Be sure to thoroughly test your

application to avoid unplanned thermal shutdown.

For proper voltage sequencing, ﬁrst, input voltage is applied to the

module. The On/Off pin of the module is left unconnected (or tied to GND

for negative logic modules or tied to Vin for positive logic modules) so that

the module is ON by default. After applying input voltage to the module,

a minimum 10msec delay is required before applying voltage on the

sequence pin. During this time, a voltage of 50mV ( 20 mV) is maintained

on the sequence pin. This delay gives the module enough time to complete

its internal powerup soft-start cycle. During the delay time, the sequence

pin should be held close to ground (nominally 50mV 20 mV). This is re-

quired to keep the internal opamp out of saturation thus preventing output

overshoot during the start of the sequencing ramp. By selecting resistor R1

according to the following equation

Temperature Derating Curves

The graphs in this data sheet illustrate typical operation under a variety of

conditions. The Derating curves show the maximum continuous ambient air

temperature and decreasing maximum output current which is accept-

able under increasing forced airﬂow measured in Linear Feet per Minute

(“LFM”). Note that these are AVERAGE measurements. The converter will

accept brief increases in current or reduced airﬂow as long as the average

is not exceeded.

Note that the temperatures are of the ambient airﬂow, not the converter

itself which is obviously running at higher temperature than the outside

air. Also note that very low ﬂow rates (below about 25 LFM) are similar to

“natural convection”, that is, not using fan-forced airﬂow.

23500

R1 = ———— ohms,

Vin – 0.05

the voltage at the sequencing pin will be 50mV when the sequencing

signal is at zero. See ﬁgure 6 for R1 connection for the sequencing signal to

the SEQ pin.

Murata Power Solutions makes Characterization measurements in a

closed cycle wind tunnel with calibrated airflow. We use both thermo-

couples and an infrared camera system to observe thermal performance.

http://www.murata-ps.com/datasheet/?http://

www.murata-ps.com/data/apnotes/dcan-61.pdf

CAUTION: These graphs are all collected at slightly above Sea Level

altitude. Be sure to reduce the derating for higher density altitude.

Click here to view Application Note DCAN-61

www.murata-ps.com/support

MDC_OKL-T/6-W5 Series.C01 Page 14 of 17

OKL-T/6-W5 Series

Programmable Output 6-Amp iLGA SMT PoLs

Output Current Limiting

Output Capacitive Load

Current limiting inception is deﬁned as the point at which full power falls

below the rated tolerance. See the Performance/Functional Speciﬁca-

tions. Note particularly that the output current may brieﬂy rise above its

rated value in normal operation as long as the average output power is

not exceeded. This enhances reliability and continued operation of your

application. If the output current is too high, the converter will enter the

short circuit condition.

These converters do not require external capacitance added to achieve

rated speciﬁcations. Users should only consider adding capacitance to

reduce switching noise and/or to handle spike current load steps. Install

only enough capacitance to achieve noise objectives. Excess external

capacitance may cause regulation problems, degraded transient response

and possible oscillation or instability.

Output Short Circuit Condition

When a converter is in current-limit mode, the output voltage will drop as

the output current demand increases. If the output voltage drops too low

(approximately 98% of nominal output voltage for most models), the mag-

netically coupled voltage used to develop PWM bias voltage will also drop,

thereby shutting down the PWM controller. Following a time-out period, the

PWM will restart, causing the output voltage to begin rising to its appropri-

ate value. If the short-circuit condition persists, another shutdown cycle

will initiate. This rapid on/off cycling is called “hiccup mode”. The hiccup

cycling reduces the average output current, thereby preventing excessive

internal temperatures and/or component damage.

The “hiccup” system differs from older latching short circuit systems

because you do not have to power down the converter to make it restart.

The system will automatically restore operation as soon as the short circuit

condition is removed.

OKL -T

+Vin

Remote On/Off Control

470K

The OKL Series power modules can be speciﬁed with either a positive or nega-

tive logic type. See Figures 7 and 8 for On/Off circuit control. In the positive logic

on/off option the unit turns on during a logic high on the On/Off pin and turns off

during a logic low. In a negative logic on/off option, the unit turns off during logic

high and on during logic low. The On/Off signal should always be reference to

ground. For positive or negative option, leaving then On/Off pin disconnected

will turn the unit on when input voltage is present.

+

OUT

R1

–

SEQ

Control Voltage

10K

SEQ

Positive—Units are enabled when the on/off pin is left open or is pulled

high to +Vin. The On/Off circuit control is shown in ﬁgure 7. When the

external transistor Q1 is in the off state, the internal PWM enable pin is pull

high causing the unit to turn on. When Q1 is turn on, the On/Off pin is pulled

low and the units is off. Rp should be around 20K ohms.

GND

Figure 6. Sequencing Signal Interface of Module

OKL N Module

Negative—Units are enabled when the ON/Off is open or brought to

within a low voltage (see speciﬁcations) with respect to –Vin. The unit is off

when the ON/Off is pulled high with respect to –Vin (see speciﬁcations). The

On/Off circuitry is shown in ﬁgure 8. The On/Off pin should be pulled high

with an external pull-up resistor (20K ohms). When Q1 is in the off state,

the On/Off pin is pulled high, transistor Q3 is turn on and the unit is off. To

turn on the unit, Q1 is turn on, pulling the On/Off pin low and turning Q3 off

resulting on the unit being on.

+Vin

Rp

+Vin

PWM

GND

E

On/Off

Q3

Q1

Dynamic control of the On/Off function should be able to sink the speci-

ﬁed signal current when brought low and withstand appropriate voltage

when brought high. Be aware too that there is a ﬁnite time in milliseconds

(see speciﬁcations) between the time of On/Off Control activation and

stable, regulated output. This time will vary slightly with output load type

and current and input conditions.

GND

BOM  Rp  20K

BOM  Q1  Q SMT MOS P 30V

Figure 7. On/Off Circuit Control for Using Negative On/Off Logic

www.murata-ps.com/support

MDC_OKL-T/6-W5 Series.C01 Page 15 of 17

OKL-T/6-W5 Series

Programmable Output 6-Amp iLGA SMT PoLs

Voltage Range Graph

Soldering Guidelines

Please observe the limits below for voltage input and output ranges. These

limits apply at all output currents.

6

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. Your production environment may differ

therefore please thoroughly review these guidelines with your process engineers.

5

4

Reflow Solder Operations for surface-mount products (SMT)

For Sn/Ag/Cu based solders:

Vin=2.4V / Vout=1.8V

3

Preheat Temperature

Time over Liquidus

Less than 1 ºC. per second

45 to 75 seconds

2

Maximum Peak Temperature

Cooling Rate

260 ºC.

1

0

Upper Limit

Lower Limit

Less than 3 ºC. per second

For Sn/Pb based solders:

Preheat Temperature

Time over Liquidus

Less than 1 ºC. per second

60 to 75 seconds

0.5

1

1.5

2

2.5

3

3.5

Output Voltage (V)

Maximum Peak Temperature

Cooling Rate

235 ºC.

Less than 3 ºC. per second

Recommended Lead-free Solder Reﬂow Proﬁle

Peak Temp.

235-260° C

250

200

Reﬂow Zone

150

100

50

Soaking Zone

120 sec max

time above 217° C

45-75 sec

<1.5° C/sec

High trace = normal upper limit

Low trace = normal lower limit

Preheating Zone

240 sec max

0

30

60

90

120

150

Time (sec)

180

210

240

270

300

www.murata-ps.com/support

MDC_OKL-T/6-W5 Series.C01 Page 16 of 17

OKL-T/6-W5 Series

Programmable Output 6-Amp iLGA SMT PoLs

Vertical Wind Tunnel

Murata Power Solutions employs a computer controlled

custom-designed closed loop vertical wind tunnel, infrared

video camera system, and test instrumentation for accurate

airﬂow and heat dissipation analysis of power products.

The system includes a precision low ﬂow-rate anemometer,

variable speed fan, power supply input and load controls,

temperature gauges, and adjustable heating element.

IR Transparent

optical window

Variable

speed fan

Unit under

test (UUT)

The IR camera monitors the thermal performance of the

Unit Under Test (UUT) under static steady-state conditions. A

special optical port is used which is transparent to infrared

wavelengths.

IR Video

Camera

Both through-hole and surface mount converters are

soldered down to a host carrier board for realistic heat

absorption and spreading. Both longitudinal and transverse

airﬂow studies are possible by rotation of this carrier board

since there are often signiﬁcant differences in the heat

dissipation in the two airﬂow directions. The combination of

adjustable airﬂow, adjustable ambient heat, and adjustable

Input/Output currents and voltages mean that a very wide

range of measurement conditions can be studied.

Heating

element

Precision

low-rate

anemometer

3” below UUT

The collimator reduces the amount of turbulence adjacent

to the UUT by minimizing airﬂow turbulence. Such turbu-

lence inﬂuences the effective heat transfer characteristics

and gives false readings. Excess turbulence removes more

heat from some surfaces and less heat from others, possibly

causing uneven overheating.

Ambient

temperature

sensor

Airﬂow

collimator

Both sides of the UUT are studied since there are different

thermal gradients on each side. The adjustable heating element

and fan, built-in temperature gauges, and no-contact IR camera mean

that power supplies are tested in real-world conditions.

Figure 8. Vertical Wind Tunnel

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 02048-1151 U.S.A.

ISO 9001 and 14001 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.

www.murata-ps.com/support

MDC_OKL-T/6-W5 Series.C01 Page 17 of 17


型号：	OKL-T/6-W5P-C/S
厂家：	muRata
描述：	DC-DC Regulated Power Supply Module
文件：	总17页 (文件大小：1371K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

OKL-T/6-W5P-C/S [MURATA]

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