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Connection Diagram

Figure 1. OKL2-T/6-W12

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

External

Power

Source

On/Off

Control

Common

Sequence/Tracking Power Good out

Open = On

Closed = Off

+Vin +Vout

Trim

Sense

Controller

Reference and

Error Ampliﬁer

t4XJUDIJOH

t'JMUFST

t$VSSFOU4FOTF

(Positive

On/Off)

PRODUCT OVERVIEW

The OKL-T/6-W12 series are miniature non-iso-

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

for embedded applications. Featuring inspectable

Land Grid Array (iLGA) format, the OKL-T/6-W12

measures 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 4.5 to 14 Volts DC.

The maximum output current is 6 Amps. Based

on ﬁ xed-frequency synchronous buck converter

switching topology, the high power conversion

efﬁ cient Point of Load (PoL) module features

programmable output voltage and On/Off control.

These converters also include under voltage lock

out (UVLO), output short circuit protection, and

over-current protections.

An optional sequence/tracking feature on

OKL2-T/6-W12 models allows power sequencing

of PoL’s. These units meet all standard UL/EN/IEC

60950-1 safety certiﬁ cations (2nd Edition) and RoHS-6

hazardous substance compliance.

FEATURES

■ iLGA inspectable Land Grid Array

■ 4.5-14Vdc input voltage range

■ Programmable output voltage from 0.591-5.5Vdc

■ Drives up to 300 µF ceramic capacitive loads

■ High power conversion efﬁ ciency at 93%

■ Outstanding thermal derating performance

■ Short circuit and over current protection

■ On/Off control and Power Good signal

■ Optional Sequence/Tracking operation (OKL2-T/6-

W12 models)

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

■ RoHS-6 hazardous substance compliance

OKL-T/6-W12 Series

Programmable Output 6-Amp iLGA SMT PoLs

MDC_OKL-T/6-W12 Series.C02 Page 1 of 17

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For full details go to

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Typical unit

ypica

Summary of content (17 pages)

PAGE 1
OKL-T/6-W12 Series www.murata-ps.com Programmable Output 6-Amp iLGA SMT PoLs Typical unit FEATURES PRODUCT OVERVIEW ■ iLGA inspectable Land Grid Array ■ 4.5-14Vdc input voltage range ■ Programmable output voltage from 0.591-5.
PAGE 2
OKL-T/6-W12 Series Programmable Output 6-Amp iLGA SMT PoLs Model Number Output Input Efﬁciency Regulation (max.) Vout Iout (Amps, Power R/N (mV p-p) Vin nom. Range Iin, no load Iin, full load (Volts) ➀ max.) (Watts) Max. ➃ (Amps) Line Load (Volts) (Volts) ➀ (mA) ➃ Min. Typ. OKL-T/6-W12P-C 0.591-5.5 6 30 20 ±0.25% ±0.25% 12 4.5-14 20 2.69 91% 93% Pos. OKL-T/6-W12N-C 0.591-5.5 6 30 20 ±0.25% ±0.25% 12 4.5-14 20 2.69 91% 93% Neg. OKL2-T/6-W12P-C 0.591-5.5 6 30 20 ±0.25% ±0.
PAGE 3
OKL-T/6-W12 Series Programmable Output 6-Amp iLGA SMT PoLs Performance and Functional Speciﬁcations See Note 1 Dynamic Characteristics Input Input Voltage Range Isolation Start-Up Voltage Undervoltage Shutdown (see Note 15) Overvoltage Shutdown Reﬂected (Back) Ripple Current (Note 2) Internal Input Filter Type Recommended External Fuse Reverse Polarity Protection See Ordering Guide and Note 7. Not isolated 4.2 V 3.
PAGE 4
OKL-T/6-W12 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. (4b) Mean Time Before Failure is calculated using the MIL-HDBK-217N2 method, ground benign, +25ºC., full output load, natural convection.
PAGE 5
OKL-T/6-W12 Series Programmable Output 6-Amp iLGA SMT PoLs PERFORMANCE DATA AND OSCILLOGRAMS Efﬁciency vs. Line Voltage and Load Current @ +25˚C. (Vout = 5.0V) Maximum Current Temperature Derating at Sea Level (Vin=12V, Vout=5.0V) 100 7 6 95 Output Current (Amps) Efﬁciency (%) 5 90 VIN = 6.
PAGE 6
OKL-T/6-W12 Series Programmable Output 6-Amp iLGA SMT PoLs PERFORMANCE DATA AND OSCILLOGRAMS Efﬁciency vs. Line Voltage and Load Current @ +25˚C. (Vout = 3.3V) Maximum Current Temperature Derating at Sea Level (Vin=12V, Vout=3.3V) 100 7 6 95 Output Current (Amps) Efﬁciency (%) 5 90 VIN = 4.
PAGE 7
OKL-T/6-W12 Series Programmable Output 6-Amp iLGA SMT PoLs PERFORMANCE DATA AND OSCILLOGRAMS Efﬁciency vs. Line Voltage and Load Current @ +25˚C. (Vout = 2.5V) Maximum Current Temperature Derating at Sea Level (Vin=12V, Vout=2.5V) 100 7 6 95 Output Current (Amps) Efﬁciency (%) 5 90 VIN = 4.
PAGE 8
OKL-T/6-W12 Series Programmable Output 6-Amp iLGA SMT PoLs PERFORMANCE DATA AND OSCILLOGRAMS Efﬁciency vs. Line Voltage and Load Current @ +25˚C. (Vout = 1.8V) Maximum Current Temperature Derating at Sea Level (Vin=12V, Vout=1.8V) 100 7 6 95 Output Current (Amps) Efﬁciency (%) 5 90 VIN = 4.
PAGE 9
OKL-T/6-W12 Series Programmable Output 6-Amp iLGA SMT PoLs PERFORMANCE DATA AND OSCILLOGRAMS Maximum Current Temperature Derating at Sea Level (Vin=12V, Vout=1.2V) 100 7 95 6 90 5 Output Current (Amps) Efﬁciency (%) Efﬁciency vs. Line Voltage and Load Current @ +25˚C. (Vout = 1.2V) 85 80 VIN = 4.
PAGE 10
OKL-T/6-W12 Series Programmable Output 6-Amp iLGA SMT PoLs PERFORMANCE DATA AND OSCILLOGRAMS Efﬁciency vs. Line Voltage and Load Current @ +25˚C. (Vout = 1.0V) Maximum Current Temperature Derating at Sea Level (Vin=12V, Vout=1.0V) 100 7 95 6 90 Output Current (Amps) Efﬁciency (%) 5 85 80 VIN = 4.
PAGE 11
OKL-T/6-W12 Series Programmable Output 6-Amp iLGA SMT PoLs MECHANICAL SPECIFICATIONS Top View INPUT/OUTPUT CONNECTIONS 0.48 (12.19) Pin 1 2 3 4 5 6 7 8 9 10 11 12 Bottom View 0.48 (12.19) Side View Function On/Off Control* VIN Ground VOUT Sense Trim Ground No Connection Sequence/Tracking** Power Good Out No Connection No Connection *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.
PAGE 12
OKL-T/6-W12 Series Programmable Output 6-Amp iLGA SMT PoLs TAPE AND REEL INFORMATION (MSL RATING 2) Tape Detail 7.40±0.1 A’ B-B’ SECTION 12.60±0.1 L00103 B A YMDX Rev. L00103 YMDX Rev. L00103 YMDX Rev. Vacuum Pickup Point in Center 0.40±0.05 (7.0º) 4.00±0.1 24.00+0.3 -0.1 16.00±0.1 B’ 11.50±0.1 ø1.50+0.1 -0 1.75±0.1 Round Sprocket Holes 2.00±0.1 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.
PAGE 13
OKL-T/6-W12 Series Programmable Output 6-Amp iLGA SMT PoLs TECHNICAL NOTES 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 is recommended to have a ±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.
PAGE 14
OKL-T/6-W12 Series Programmable Output 6-Amp iLGA SMT PoLs TO OSCILLOSCOPE CURRENT PROBE +VIN VIN + – + – LBUS CBUS +VOUT CIN C1 -VIN CIN = 2 x 100μF, ESR < 700mΩ @ 100kHz CBUS = 1000μF, ESR < 100mΩ @ 100kHz LBUS = 1μH Figure 4: Measuring Input Ripple Current C2 SCOPE RLOAD -VOUT C1 = 1μF C2 = 10μF LOAD 2-3 INCHES (51-76mm) FROM MODULE Figure 5: Measuring Output Ripple and Noise (PARD) Minimum Output Loading Requirements All models regulate within speciﬁcation and are stable under no load to
PAGE 15
OKL-T/6-W12 Series Programmable Output 6-Amp iLGA SMT PoLs Output Current Limiting Current limiting inception is deﬁned as the point at which full power falls below the rated tolerance. See the Performance/Functional Speciﬁcations. 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.
PAGE 16
OKL-T/6-W12 Series Programmable Output 6-Amp iLGA SMT PoLs Voltage Range Graph Please observe the limits below for voltage input and output ranges. These limits apply at all output currents. 16 14 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.
PAGE 17
OKL-T/6-W12 Series Programmable Output 6-Amp iLGA SMT PoLs Vertical Wind Tunnel IR Transparent optical window Unit under test (UUT) Variable speed fan 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.