Datasheet

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

The OKX-T/3-D12 series are miniature SIP non-

isolated Point-of-Load (POL) DC/DC power convert-

ers for embedded applications. The module is fully

compatible with Distributed-power Open Standards

Alliance industry-standard speciﬁ cations.

Applications include powering CPU’s, datacom/

telecom systems, programmable logic and mixed

voltage systems. The wide input range is 8.3 to

13.8 Volts DC at 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 protec-

tion, over-current and over temperature protections.

These units are designed to meet all standard UL/

EN/IEC 60950-1 safety certiﬁ cations and RoHS-6

hazardous substance compliance.

PRODUCT OVERVIEW

Figure 1. OKX-T/3-D12

Connection Diagram

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

See speciﬁ cations.

External

Power

Source

On/Off

Control

CommonCommon

Open = On

Closed = Off

+Vin +Vout

Trim

Controller

Reference and

Error Ampliﬁer

t4XJUDIJOH

t'JMUFST

t$VSSFOU4FOTF

(Positive

On/Off)

FEATURES



Non-isolated SIP PoL DC/DC power module



8.3-13.8Vdc input voltage range



Programmable output voltage from 0.7525-

5.5Vdc



Under Voltage shutdown (Vin)



Drives 1000 F ceramic capacitive loads



High power conversion efﬁ ciency 93% at 5 Vout

(typical)



Outstanding thermal derating performance



Over temperature and over current protection



On/Off control



UL60950, CSA-C22.2 No.60950 IEC/EN60950

(pending)



Industry-standard (DOSA) SIP format



RoHS-6 hazardous substance compliance

Typical unitTypical uni

(pending)

OKX-T/3-D12 Series

Adjustable 3-Amp SIP Non-Isolated DC/DC Converters

MDC_OKX-T/3-D12 Series.A01 Page 1 of 15

www.murata-ps.com

www.murata-ps.com/support

For full details go to

www.murata-ps.com/rohs

Summary of content (15 pages)

PAGE 1
OKX-T/3-D12 Series www.murata-ps.com Adjustable 3-Amp SIP Non-Isolated DC/DC Converters FEATURES Non-isolated SIP PoL DC/DC power module 8.3-13.8Vdc input voltage range Programmable output voltage from 0.75255.5Vdc Under Voltage shutdown (Vin) Typical unit Drives 1000 μF ceramic capacitive loads High power conversion efﬁciency 93% at 5 Vout (typical) Outstanding thermal derating performance Over temperature and over current protection On/Off control UL60950, CSA-C22.2 No.
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OKX-T/3-D12 Series Adjustable 3-Amp SIP Non-Isolated DC/DC Converters PERFORMANCE SPECIFICATIONS SUMMARY AND ORDERING GUIDE Output Model Number ➀ VOUT (Volts) ➀ IOUT (Amps, max) ➀ OKX-T/3-D12-C .7525-5.5 3 Input R/N Power (mVp-p) (Watts) Max. d 15 20 Regulation (Max.) Vin Nom. Range (Volts) (Volts) e Line Load ±0.15% ±0.3% 12 8.3-13.8 Efﬁciency Iin, no load (mA) Iin, full load (Amps) Min. Typ. Dimensions are in inches (mm) 40 1.344 91.5% 93.0% 0.40x0.90x0.282 (10.16x 22.86x 7.
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OKX-T/3-D12 Series Adjustable 3-Amp SIP Non-Isolated DC/DC Converters FUNCTIONAL SPECIFICATIONS, OKX-T/3-D12-C Conditions ➀ Full power operation None, install external fuse Power on or off, referred to -Vin ABSOLUTE MAXIMUM RATINGS Input Voltage, Continuous Input Reverse Polarity On/Off Remote Control Output Power Minimum 0 Typical/Nominal Maximum 15 None 0 0 15 13.8 15.
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OKX-T/3-D12 Series Adjustable 3-Amp SIP Non-Isolated DC/DC Converters FUNCTIONAL SPECIFICATIONS, OKX-T/3-D12-C (CONT.
PAGE 5
OKX-T/3-D12 Series Adjustable 3-Amp SIP Non-Isolated DC/DC Converters PERFORMANCE DATA, OKX-T/3-D12-C Efﬁciency vs. Line Voltage and Load Current @ +25°C (VOUT = 5V) Efﬁciency vs. Line Voltage and Load Current @ +25°C (VOUT = 3.3V) 96 94 94 92 92 90 90 88 86 VIN = 8.3V VIN = 12V VIN = 13.8V 86 84 Efﬁciency (%) Efﬁciency (%) 88 82 80 82 80 78 78 76 76 74 74 72 72 70 70 VIN = 8.3V VIN = 12V VIN = 13.8V 84 68 0 0.5 1 1.5 2 Load Curre nt (Amps) 2.5 3 0 3.
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OKX-T/3-D12 Series Adjustable 3-Amp SIP Non-Isolated DC/DC Converters PERFORMANCE DATA, OKX-T/3-D12-C 86 84 82 80 78 76 74 72 70 68 66 64 62 60 58 Maximum Current Temperature Derating at Sea Level (For Vin = 12.0V, Vout = 0.75 to 5V. Airﬂow is from pin 3 to pin 2.) 3.0 Natural convection 2.8 Output Current (Amps) Efﬁciency (%) Efﬁciency vs. Line Voltage and Load Current @ +25°C (VOUT = 1V) VIN = 8.3V VIN = 12V VIN = 13.8V 2.5 2.3 2.0 1.8 1.5 1.3 1.0 0 0.5 1 1.5 2 Load Curre nt (Amps) 2.5 3 3.
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OKX-T/3-D12 Series Adjustable 3-Amp SIP Non-Isolated DC/DC Converters PERFORMANCE DATA, OKX-T/3-D12-C Step Load Transient Response (Vin=12V, Vout=5V, Cload=1uF || 10uF) Top trace=Vout, Bottom trace=Iout 1.5A 3.0A (di/dt=2.5A/uSec) 3.0A 1.5A (di/dt=2.5A/uSec) 12Vin Step Load Transient Response (Vin=12V, Vout=0.75V, Cload=1uF || 10uF) Top trace=Vout, Bottom trace=Iout 1.5A 3.0A (di/dt=2.5A/uSec) 3.0A 1.5A (di/dt=2.5A/uSec) 12Vin www.murata-ps.com/support MDC_OKX-T/3-D12 Series.
PAGE 8
OKX-T/3-D12 Series Adjustable 3-Amp SIP Non-Isolated DC/DC Converters PERFORMANCE DATA, OKX-T/3-D12-C Start-up Delay (Vin=12V, Cin=100uF, Cload= 1uF || 10uF, Ta=+25°C) Vout=5V Vout=0.75V 0A 0A www.murata-ps.com/support MDC_OKX-T/3-D12 Series.
PAGE 9
OKX-T/3-D12 Series Adjustable 3-Amp SIP Non-Isolated DC/DC Converters PERFORMANCE DATA, OKX-T/3-D12-C Output Ripple and Noise (Vin=12V, Cout= 1 uF || 10 uF, Ta=+25°C) 0A 3.0A 5.0Vout 3.3Vout www.murata-ps.com/support MDC_OKX-T/3-D12 Series.
PAGE 10
OKX-T/3-D12 Series Adjustable 3-Amp SIP Non-Isolated DC/DC Converters PERFORMANCE DATA, OKX-T/3-D12-C Output Ripple and Noise (Vin=12V, Cout= 1 uF || 10 uF, Ta=+25°C) 0A 3.0A 1.8Vout 1.0Vout www.murata-ps.com/support MDC_OKX-T/3-D12 Series.
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OKX-T/3-D12 Series Adjustable 3-Amp SIP Non-Isolated DC/DC Converters MECHANICAL SPECIFICATIONS TOP VIEW 7.1 0.28 22.9 0.90 END VIEW FRONT VIEW 10.2 0.40 1.45 0.057 REF 1.3 0.05 0.34 REF 3.8 0.15 5 4 3 0.55 REF 2 2.54 0.100 TYP 0.025 TYP 20.32 0.800 1.3 0.05 5.8 0.23 0.64 0.025 Dimensions are in mm [inches] shown for ref. only. RECOMMENDED FOOTPRINT (VIEWED FROM TOP) [23.37] 0.92 [20.32] 0.800 [7.62] 0.30 5 4 Third Angle Projection [1.52] 0.06 3 2 1 [2.54] 0.100 [5.08] 0.200 [1.
PAGE 12
OKX-T/3-D12 Series Adjustable 3-Amp SIP Non-Isolated DC/DC Converters STANDARD PACKAGING Each static dissipative polyethylene foam tray accommodates 75 converters 2.75±.25 (69.85) Closed height 11.00 ±.25 (279.4) 10.50±.25 (266.7) Carton accommodates four (4) trays of 75 yielding 300 converters per carton. Dimensions are in inches (mm shown for ref. only). Third Angle Projection Tolerances (unless otherwise speciﬁed): .XX ± 0.02 (0.5) .XXX ± 0.010 (0.
PAGE 13
OKX-T/3-D12 Series Adjustable 3-Amp SIP Non-Isolated 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 safety, we recommend a fast blow fuse installed in the ungrounded input supply line. The installer must observe all relevant safety standards and regulations.
PAGE 14
OKX-T/3-D12 Series Adjustable 3-Amp SIP Non-Isolated DC/DC Converters +SENSE +OUTPUT C1 C2 SCOPE RLOAD will shut down. Following a time-out period, the PWM will restart, causing the output voltage to begin ramping up 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 15
OKX-T/3-D12 Series Adjustable 3-Amp SIP Non-Isolated DC/DC Converters 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.