Datasheet

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

FEATURES



600 KHz operation



4.5-14 Vdc input voltage range



Programmable output voltage from 0.591-6.0 VDC



Drives up to 200 F ceramic capacitive loads



High power conversion efﬁ ciency at 93%

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Outstanding thermal derating performance



Over temperature and over current protection



On/Off control

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SIP, 0.41 x 0.65 x 0.4 inches (10.4 x 16.5 x 10.2 mm).



Certiﬁ ed to UL/EN/IEC 60950-1 safety standards,

2nd edition



RoHS-6 hazardous substance compliance

The OKR-T/3 series are miniature SIP non-isolated Point-of-Load (PoL) DC/DC power converters

measuring only 0.41 x 0.65 x 0.22 inches (10.4 x 16.5 x 5.6 mm). The wide input range is 4.5 to 14 Volts

DC. Based on 600 KHz synchronous buck topology, the high power conversion efﬁ cient Point of Load (PoL)

module features programmable output voltage and On/Off control, under voltage lock out (UVLO), overcur-

rent and over temperature protections. These units are certiﬁ ed to UL/EN/ IEC 60950-1 safety standards

(2nd edition) and RoHS-6 hazardous substance compliance.

PRODUCT OVERVIEW

Figure 1. Connection Diagram

Typical unit

External

Power

Source

On/Off

Control

Common

Open = On

Closed = Off

+Vin +Vout

Trim

Controller

Reference and

Error Ampliﬁer

t4XJUDIJOH

t'JMUFST

t$VSSFOU4FOTF

(Positive

On/Off)

pical uni

OKR-T/3 Series

Adjustable Output 3-Amp SIP-mount DC/DC Converters

MDC_OKR-T/3-W12.B05 Page 1 of 18

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For full details go to

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Summary of content (18 pages)

PAGE 1
OKR-T/3 Series www.murata-ps.com Adjustable Output 3-Amp SIP-mount DC/DC Converters TTypical Ty pical unit FEATURES PRODUCT OVERVIEW  600 KHz operation The OKR-T/3 series are miniature SIP non-isolated Point-of-Load (PoL) DC/DC power converters measuring only 0.41 x 0.65 x 0.22 inches (10.4 x 16.5 x 5.6 mm). The wide input range is 4.5 to 14 Volts DC.
PAGE 2
OKR-T/3 Series Adjustable Output 3-Amp SIP-mount DC/DC Converters Performance Specifications Summary and Ordering Guide ORDERING GUIDE Output Root Model OKR-T/3-W12-C Input R/N (mVp-p) Regulation (Max.) IOUT VOUT (Amps Power VIN Nom. Range (Volts) max) (Watts) Max. Line Load (Volts) (Volts) 0.591-6 3 15 25 ±0.3% ±1.4% 12 ➀ For Vout ≥ 3.3V, Vin should be ≥ (Vout ÷ 0.85) + 0.5V. 4.5-14 Package IIN, IIN, no load full load (mA) (Amps) 80 1.34 Efﬁciency Min. Typ. Case Pinout 90.
PAGE 3
OKR-T/3 Series Adjustable Output 3-Amp SIP-mount DC/DC Converters Performance/Functional Speciﬁcations All speciﬁcations are typical unless noted See Note 1. Input Dynamic Characteristics Input Voltage Range See Ordering Guide. Recommended External Fuse 6 Amps Dynamic Load Response (50 to 100% load step, no external caps) di/dt = 1 A/μSec 20 μSec to within ±2% of final value Reverse Polarity Protection (Note 9) None. Use an external fuse. Switching Frequency Isolation Not isolated.
PAGE 4
OKR-T/3 Series Adjustable Output 3-Amp SIP-mount DC/DC Converters Notes (1) All speciﬁcations are typical unless noted. General conditions for Speciﬁcations are +25 deg.C, Vin=nominal, Vout=nominal (no trim installed), full rated load. Adequate airﬂow must be supplied for extended testing under power. All models are tested and speciﬁed with external 1μF and 22 μF paralleled output capacitors and a 22 μF external input capacitor. All capacitors are low ESR types.
PAGE 5
OKR-T/3 Series Adjustable Output 3-Amp SIP-mount DC/DC Converters OKR-T/3-W12-C PERFORMANCE DATA Efﬁciency vs. Line Voltage and Load Current @ 25°C Maximum Current Temperature Derating @ Sea Level (VIN = 7V and 12V, VOUT = 5V and 6 V) 100 4.0 95 3.5 VIN = 13.8V VIN = 12V VIN = 7V 3.0 Output Current (Amps) Efﬁciency (%) 90 85 80 Natural convection 2.5 2.0 1.5 1.0 75 0.5 70 0 0.5 1 1.5 2 2.5 3 Load Current (Amps) 3.5 0.
PAGE 6
OKR-T/3 Series Adjustable Output 3-Amp SIP-mount DC/DC Converters OKR-T/3-W12-C OSCILLOGRAMS – Vout = 2.5V On/Off Enable Startup (Vin=13.8V, Vout=2.5V, Iout=3A, Cload=0) Output Ripple and Noise (Vin=12V, Vout=2.5V, Iout=3A, Cload=0, ScopeBW=100MHz) Trace 4=Enable, Trace2=Vout Step Load Transient Response (Vin=12V, Vout=2.5V, Cload=0, Iout=1.5A to 3A) Step Load Transient Response (Vin=12V, Vout=2.5V, Cload=0, Iout=3A to 1.5A) Trace 2=Vout, 100 mV/div. Trace 4=Iout, 1A/div. Trace 2=Vout, 100 mV/div.
PAGE 7
OKR-T/3 Series Adjustable Output 3-Amp SIP-mount DC/DC Converters OKR-T/3-W12-C OSCILLOGRAMS – Vout = 5V On/Off Enable Startup (Vin=13.8V, Vout=5V, Iout=3A, Cload=0) Output Ripple and Noise (Vin=12V, Vout=5V, Iout=3A, Cload=0, ScopeBW=100MHz) Trace 4=Enable, Trace2=Vout Step Load Transient Response (Vin=12V, Vout=5V, Cload=0, Iout=1.5A to 3A) Step Load Transient Response (Vin=12V, Vout=5V, Cload=0, Iout=3A to 1.5A) Trace 2=Vout, Trace 4=Iout, 1A/div. Trace 2=Vout, Trace 4=Iout, 1A/div.
PAGE 8
OKR-T/3 Series Adjustable Output 3-Amp SIP-mount DC/DC Converters OKR-T/3-W12-C OSCILLOGRAMS – Vout = 1.8V Step Load Transient Response (Vin=12V, Vout=1.8V, Cload=5x10μF X5R 0805 ceramic, total 50μF, Iout=0A to 3A) Top trace=Vout, Bottom trace=Iout Step Load Transient Response (Vin=12V, Vout=1.8V, Cload=5x10μF X5R 0805 ceramic, total 50μF, Iout=3A to 0A) Top trace=Vout, Bottom trace=Iout Step Load Transient Response (Vin=4.5V, Vout=1.
PAGE 9
OKR-T/3 Series Adjustable Output 3-Amp SIP-mount DC/DC Converters OKR-T/3-W12-C OSCILLOGRAMS – Vout = 1.8V Step Load Transient Response (Vin=4.5V, Vout=1.8V, Cload=12x10μF X5R 0805 ceramic, total 120μF, Iout=0A to 3A) Top trace=Vout, Bottom trace=Iout Step Load Transient Response (Vin=4.5V, Vout=1.8V, Cload=12x10μF X5R 0805 ceramic, total 120μF, Iout=3A to 0A) Top trace=Vout, Bottom trace=Iout Step Load Transient Response (Vin=4.5V, Vout=1.
PAGE 10
OKR-T/3 Series Adjustable Output 3-Amp SIP-mount DC/DC Converters OKR-T/3-W12-C OSCILLOGRAMS – Vout = 3.3V Step Load Transient Response (Vin=12V, Vout=3.3V, Cload=5x10μF X5R 0805 ceramic, total 50μF, Iout=0A to 3A) Top trace=Vout, Bottom trace=Iout Step Load Transient Response (Vin=12V, Vout=3.3V, Cload=5x10μF X5R 0805 ceramic, total 50μF, Iout=3A to 0A) Top trace=Vout, Bottom trace=Iout Step Load Transient Response (Vin=5.5V, Vout=3.
PAGE 11
OKR-T/3 Series Adjustable Output 3-Amp SIP-mount DC/DC Converters OKR-T/3-W12-C OSCILLOGRAMS – Vout = 3.3V Step Load Transient Response (Vin=5.5V, Vout=3.3V, Cload=12x10μF X5R 0805 ceramic, total 120μF, Iout=0A to 3A) Top trace=Vout, Bottom trace=Iout Step Load Transient Response (Vin=5.5V, Vout=3.3V, Cload=12x10μF X5R 0805 ceramic, total 120μF, Iout=3A to 0A) Top trace=Vout, Bottom trace=Iout Step Load Transient Response (Vin=5.5V, Vout=3.
PAGE 12
OKR-T/3 Series Adjustable Output 3-Amp SIP-mount DC/DC Converters OKR-T/3-W12-C OSCILLOGRAMS – Vout = 5V Step Load Transient Response (Vin=12V, Vout=5V, Cload=5x10μF X5R 0805 ceramic, total 50μF, Iout=0A to 3A) Top trace=Vout, Bottom trace=Iout Step Load Transient Response (Vin=12V, Vout=5V, Cload=5x10μF X5R 0805 ceramic, total 50μF, Iout=3A to 0A) Top trace=Vout, Bottom trace=Iout Step Load Transient Response (Vin=7.
PAGE 13
OKR-T/3 Series Adjustable Output 3-Amp SIP-mount DC/DC Converters OKR-T/3-W12-C OSCILLOGRAMS – Vout = 5V Step Load Transient Response (Vin=7.5V, Vout=5V, Cload=12x10μF X5R 0805 ceramic, total 120μF, Iout=0A to 3A) Top trace=Vout, Bottom trace=Iout Step Load Transient Response (Vin=7.5V, Vout=5V, Cload=12x10μF X5R 0805 ceramic, total 120μF, Iout=3A to 0A) Top trace=Vout, Bottom trace=Iout Step Load Transient Response (Vin=7.
PAGE 14
OKR-T/3 Series Adjustable Output 3-Amp SIP-mount DC/DC Converters MECHANICAL SPECIFICATIONS 0.30 (7.62) 0.41 (10.4) CL 0.20 (5.1) 0.205 (5.2) 0.22 (5.6) 0.05 (1.3) REF THK 0.12 (3.05) 0.05 (1.3) REF THK 0.65 (16.5) Pin #1 0.15 (3.8) 0.15 (3.8) Pin #5 0.067 (1.7) 0.032 (0.81) 0.032 (0.81) 0.134 (3.4) 0.05 (1.3) 0.067 (1.7) 0.134 (3.4) 0.05 (1.3) OKR-T/6 Pin diameter: 0.032 (0.81) Tolerance: ±0.002 (±0.05) Pin material: Copper alloy Pin #1 Pin ﬁnish: Pure matte tin 100-300 μin.
PAGE 15
OKR-T/3 Series Adjustable Output 3-Amp SIP-mount DC/DC Converters STANDARD PACKAGING Each static dissipative polyethylene foam tray accommodates 120 converters 2.5±.25 (63.5) Closed height 10.00 ±.25 (254.0) 10.00±.25 (254.0) Carton accommodates three (3) trays of 120 yielding 360 converters per carton. 0.49 (12.5) 9.92 (252.0) 6.5 X 45° x4 0.63 (16.0) 0.39 (10.0) 0.94 (24.0) 9.92 (252.0) 0.2 (5.0) 0.33 (8.5) 0.43 (11.0) 0.2 (5.0) Dimensions are in inches (mm shown for ref. only).
PAGE 16
OKR-T/3 Series Adjustable Output 3-Amp SIP-mount DC/DC Converters TECHNICAL NOTES 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 safely, we recommend a fast blow fuse installed in the ungrounded input supply line. The installer must observe all relevant safety standards and regulations.
PAGE 17
OKR-T/3 Series Adjustable Output 3-Amp SIP-mount DC/DC Converters Murata Power Solutions makes Characterization measurements in a closed cycle wind tunnel with calibrated airﬂow. We use both thermocouples and an infrared camera system to observe thermal performance. +VOUT C1 C2 SCOPE RLOAD -VOUT C1 = 1μF C2 = 22μF LOAD 2-3 INCHES (51-76mm) FROM MODULE Figure 5.
PAGE 18
OKR-T/3 Series Adjustable Output 3-Amp SIP-mount DC/DC Converters “E” Model External Enable On/Off Control (see ﬁg. 6) The forced On/Off enable option for “E” models uses positive logic for the external control. The converter may be powered ON by applying a positive voltage (logic HI) between the On/Off pin and the negative power input (-Vin). This positive voltage is referred to –Vin and must be in the range of at least +2.0V and not to exceed the power supply input voltage (+Vin).