Datasheet

ManualsBrandsMURATA POWER SOLUTIONS ManualsPSU ComponentsDC/DC converter (SMD) 3 A 15 W No. of outputs: 1 x

Figure 1. OKL-T/3-W12

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

See speciﬁ cations.

The OKL-T/3-W12 series are miniature

non -isolated Point-of-Load (PoL) DC/DC power

converters for embedded applications. Featuring

inspectable Land Grid Array (iLGA) format, the

OKL-T/3-W12 measures only 0.48 x 0.48 x 0.244

inches max. (12.2 x 12.2 x 6.2 mm max.).

The wide input range is 4.5 to 14 Volts DC.

The maximum output current is 3 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/3-W12 models allows power sequencing of

PoL’s. These units are certiﬁ ed to all standard UL/EN/

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

RoHS-6 hazardous substance compliance.

PRODUCT OVERVIEW

Connection Diagram

External

Power

Source

On/Off

Control

Common

Sequence/Tracking

(OKL2 Models)

Power Good

Open = On

Closed = Off

+Vin +Vout

Trim

Sense

Controller

Reference and

Error Ampliﬁer

t4XJUDIJOH

t'JMUFST

t$VSSFOU4FOTF

(Positive

On/Off)

FEATURES



iLGA inspectable Land Grid Array



4.5-14Vdc input voltage range



Programmable output voltage from 0.591-5.5Vdc



Drives up to 200 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/3-W12 models)



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



RoHS-6 hazardous substance compliance

Typical unit

OKL-T/3-W12 Series

Programmable Output 3-Amp iLGA SMT PoLs

MDC_OKL-T/3-W12 Series.C02 Page 1 of 17

www.murata-ps.com

www.murata-ps.com/support

For full details go to

www.murata-ps.com/rohs

Summary of content (17 pages)

PAGE 1
OKL-T/3-W12 Series www.murata-ps.com Programmable Output 3-Amp iLGA SMT PoLs Typical unit FEATURES PRODUCT OVERVIEW  iLGA inspectable Land Grid Array The OKL-T/3-W12 series are miniature non-isolated Point-of-Load (PoL) DC/DC power converters for embedded applications. Featuring inspectable Land Grid Array (iLGA) format, the OKL-T/3-W12 measures only 0.48 x 0.48 x 0.244 inches max. (12.2 x 12.2 x 6.2 mm max.). The wide input range is 4.5 to 14 Volts DC. The maximum output current is 3 Amps.
PAGE 2
OKL-T/3-W12 Series Programmable Output 3-Amp iLGA SMT PoLs Performance Speciﬁcations and Ordering Guide ORDERING GUIDE Model Number Output Input Package - Pinout P83 Efﬁciency On/Off Seq/ Regulation (max.) Vout Iout (Amps, Power R/N (mV p-p) Vin nom. Range Iin, no load Iin, full load Case C83 Logic Track (Volts) ➀ max.) (Watts) Max. ➃ (Volts) (Volts) (mA) ➃ (Amps) ➁ Min. Typ. inches (mm) Line Load OKL-T/3-W12P-C 0.591-5.5 3 15.0 37 ±0.25% ±0.25% 12 4.5-14 20 1.34 91% 93% Pos. no 0.48x0.
PAGE 3
OKL-T/3-W12 Series Programmable Output 3-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/3-W12 Series Programmable Output 3-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. (11) Other input or output voltage ranges will be reviewed under scheduled quantity special order. (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/3-W12 Series Programmable Output 3-Amp iLGA SMT PoLs OKL-T/3-W12 PERFORMANCE DATA AND OSCILLOGRAMS OKL2-T/3-W12 Efﬁciency vs. Line Voltage and Load Current +25 ˚C (Vout = 5V) OKL-T/3-W12 Maximum Current Temperature Derating at Sea Level (VIN = 12V, VOUT = 5V) 100 3.5 95 3.0 Natural convection 100 LFM 2.5 Output Current (Amps) Efﬁciency (%) 90 85 VIN = 6V 80 VIN = 12V VIN = 14V 75 2.0 1.5 1.0 70 0.5 65 0.
PAGE 6
OKL-T/3-W12 Series Programmable Output 3-Amp iLGA SMT PoLs OKL-T/3-W12 PERFORMANCE DATA AND OSCILLOGRAMS OKL2-T/3-W12 Efﬁciency vs. Line Voltage and Load Current +25 ˚C (Vout = 3.3V) OKL-T/3-W12 Maximum Current Temperature Derating at Sea Level (VIN = 12V, VOUT = 3.3V) 100 3.5 95 3.0 Natural convection 90 85 80 Output Current (Amps) Efﬁciency (%) 2.5 VIN = 4.5V VIN = 12V 75 VIN = 14V 2.0 1.5 70 1.0 65 0.5 60 0.0 0 1 2 Load Curre nt (Amps) 3 On/Off Enable Startup Delay (Vin=12V, Vout=3.
PAGE 7
OKL-T/3-W12 Series Programmable Output 3-Amp iLGA SMT PoLs OKL-T/3-W12 PERFORMANCE DATA AND OSCILLOGRAMS OKL2-T/3-W12 Efﬁciency vs. Line Voltage and Load Current +25 ˚C (Vout = 2.5V) OKL-T/3-W12 Maximum Current Temperature Derating at Sea Level (VIN = 12V, VOUT = 2.5V) 95 3.5 90 3.0 Natural convection 2.5 Output Current (Amps) Efﬁciency (%) 85 80 VIN = 4.5V 75 VIN = 12V VIN = 14V 70 2.0 1.5 1.0 65 0.5 60 0.
PAGE 8
OKL-T/3-W12 Series Programmable Output 3-Amp iLGA SMT PoLs OKL-T/3-W12 PERFORMANCE DATA AND OSCILLOGRAMS Output Ripple and Noise (Vin=12V, Vout=1.8V, Iout=3A, Cload=0, ScopeBW=20MHz) Step Load Transient Response (Vin=12V, Vout=1.8V, Cload=0, Iout=1.5A to 3A) Trace 2=Vout, 100 mV/div. Trace 4=Iout, 2.5A/div. Step Load Transient Response (Vin=12V, Vout=1.8V, Cload=0, Iout=3A to 1.5A) Trace 2=Vout, 100 mV/div. Trace 4=Iout, 2.5A/div. www.murata-ps.com/support MDC_OKL-T/3-W12 Series.
PAGE 9
OKL-T/3-W12 Series Programmable Output 3-Amp iLGA SMT PoLs OKL-T/3-W12 PERFORMANCE DATA AND OSCILLOGRAMS OKL2-T/3-W12 Efﬁciency vs. Line Voltage and Load Current +25 ˚C (Vout = 1.2V) OKL-T/3-W12 Maximum Current Temperature Derating at Sea Level (VIN = 12V, VOUT = 1.2V) 95 3.5 90 3.0 Natural convection 85 80 75 Output Current (Amps) Efﬁciency (%) 2.5 VIN = 4.5V VIN = 12V 70 VIN = 14V 2.0 1.5 65 1.0 60 0.5 55 0 1 2 Load Curre nt (Amps) 3 0.
PAGE 10
OKL-T/3-W12 Series Programmable Output 3-Amp iLGA SMT PoLs OKL-T/3-W12 PERFORMANCE DATA AND OSCILLOGRAMS Output Ripple and Noise (Vin=12V, Vout=1.0V, Iout=3A, Cload=0, ScopeBW=20MHz) Step Load Transient Response (Vin=12V, Vout=1.0V, Cload=0, Iout=1.5A to 3A) Trace 2=Vout, 100 mV/div. Trace 4=Iout, 2.5A/div. Step Load Transient Response (Vin=12V, Vout=1.0V, Cload=0, Iout=3A to 1.5A) Trace 2=Vout, 100 mV/div. Trace 4=Iout, 2.5A/div. www.murata-ps.com/support MDC_OKL-T/3-W12 Series.
PAGE 11
OKL-T/3-W12 Series Programmable Output 3-Amp iLGA SMT PoLs MECHANICAL SPECIFICATIONS Top View INPUT/OUTPUT CONNECTIONS 0.043 (1.09) NOM. PCB THK 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 0.244 (6.2) max.
PAGE 12
OKL-T/3-W12 Series Programmable Output 3-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/3-W12 Series Programmable Output 3-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 resistor 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/3-W12 Series Programmable Output 3-Amp iLGA SMT PoLs TO OSCILLOSCOPE CURRENT PROBE +VIN VIN + – + – +VOUT LBUS CBUS 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.
PAGE 15
OKL-T/3-W12 Series Programmable Output 3-Amp iLGA SMT PoLs External +Logic Supply (+5V max.) OKL -T +Vin Power Good 470K 5mA max. Window Comparator + User’s External Logic OUT R1 – –Vin Common Power Output SEQ Control Voltage Logic Ground SEQ 10K GND Figure 7. Sequencing Signal Interface of Module HI impedance (Open Drain) = Power Ok LO impedance (Saturation) = Power Not Ok Figure 6.
PAGE 16
OKL-T/3-W12 Series Programmable Output 3-Amp iLGA SMT PoLs 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 appropriate 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.
PAGE 17
OKL-T/3-W12 Series Programmable Output 3-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.