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PDF ( 数据手册 , 数据表 ) OKY-T-5-D12P-C

零件编号 OKY-T-5-D12P-C
描述 Adjustable Output 3 and 5-Amp DOSA-SMT DC/DC Converters
制造商 Murata
LOGO Murata LOGO 


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OKY-T-5-D12P-C 数据手册, 描述, 功能
www.murata-ps.com
OKY-T/3,T/5-D12 Series
Adjustable Output 3 and 5-Amp DOSA-SMT DC/DC Converters
Typical unit
PRODUCT OVERVIEW
The OKY-T/3 and -T/5 series are miniature
non-isolated Point-of-Load (POL) DC/DC power
converters for embedded applications. The module
is fully compatible with Distributed-power Open
Standards Alliance (DOSA) industry-standard
specifications (www.dosapower.com). Applications
include powering CPU’s, datacom/telecom systems,
programmable logic and mixed voltage systems.
The wide input range is 8.3 to 14 Volts DC. Two
maximum output currents are offered, 3 Amps (T/3
models) or 5 Amps (T/5 models). 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. These converters
also include under voltage lock out (UVLO), output
short circuit protection, over-current and over
temperature protections.
These units are designed to meet all standard
UL/EN/IEC 60950-1 safety and FCC EMI/RFI
emissions certifications and RoHS-6 hazardous
substance compliance.
FEATURES
Non-isolated SMT POL DC/DC power module
8.3-14Vdc input voltage range
Programmable output voltage from 0.7525-5.5Vdc
3 Amp (T/3) or 5 Amp (T/5) output current models
Drives 1000 μF ceramic capacitive loads
High power conversion efficiency 93% at 3.3 Vout
Outstanding thermal derating performance
Over temperature and over current protection
On/Off control
UL/EN/IEC 60950-1 safety
Industry-standard (DOSA) surface-mount package
RoHS-6 hazardous substance compliance
Contents
Description, Connection Diagram, Photograph
Ordering Guide, Model Numbering
Mechanical Specifications, Input/Output Pinout
Detailed Electrical Specifications
Output Voltage Adjustment, Soldering Guidelines
Technical Notes
Product Label
OKY-T/3-D12 Performance Data and Oscillograms
OKY-T/5-D12 Performance Data and Oscillograms
Tape and Reel Information
Page
1
2
3
4
5
6
8
9
15
21
Connection Diagram
+Vin
F1
On/Off
Control
External
DC
Power
Source
Open = On
Closed = Off
(Positive
On/Off)
Controller
t4XJUDIJOH
t'JMUFST
t$VSSFOU4FOTF
Reference and
Error Amplifier
Common
Figure 1. OKY-T/3, -T/5
Note: Murata Power Solutions strongly recommends an external input fuse, F1.
See specifications.
+Vout
Trim
Common
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com/support
MDC_OKY-T/3,T/5-D12 Series.B15 Page 1 of 21







OKY-T-5-D12P-C pdf, 数据表
OKY-T/3,T/5-D12 Series
Adjustable Output 3 and 5-Amp DOSA-SMT DC/DC Converters
Output Capacitive Load
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 oscilla-
tion or instability.
The maximum rated output capacitance and ESR specification is given for a
capacitor installed immediately adjacent to the converter. Any extended output
wiring or smaller wire gauge or less ground plane may tolerate somewhat
higher capacitance. Also, capacitors with higher ESR may have a larger capaci-
tance. What counts here is the instantaneous maximum output current during
power-on charge-up and switching currents under load. Excessive current will
trip the overcurrent detection and shut off the converter.
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 dif-
fers from the product photograph on page 1. Here is the layout of the label:
Mfg.
Y01003
Product code
date YMDX Rev. Revision level
code
Figure 4. Label Artwork Layout
The label contains three rows of information:
First row – Murata Power Solutions logo
Second row – Model number product code (see table)
Third row – Manufacturing date code and revision level
Model Number
OKY-T/3-D12N-C
OKY-T/3-D12P-C
OKY-T/5-D12N-C
OKY-T/5-D12P-C
OKY-T/5-D12N-C-CIS
Product Code
Y00103
Y01103
Y00105
Y01105
YC00105
The manufacturing date code is four characters:
First character – Last digit of manufacturing year, example 2009
Second character – Month code (1 through 9 and O through D)
Third character – Day code (1 through 9 = 1 to 9, 10 = O and
11 through 31 = A through Z)
Fourth character – Manufacturing information
www.murata-ps.com/support
MDC_OKY-T/3,T/5-D12 Series.B15 Page 8 of 21







OKY-T-5-D12P-C equivalent, schematic
OKY-T/3,T/5-D12 Series
Adjustable Output 3 and 5-Amp DOSA-SMT DC/DC Converters
OKY-T/5-D12 PERFORMANCE DATA: Vout = 1.2V
OKY-T/5-D12 Efficiency vs. Line Voltage and Load Current @ 25°C (VOUT = 1.2V)
OKY-T/5-D12 Maximum Current Temperature Derating @ Sea Level
(VIN = 12V, VOUT = 1.2V, airflow is transverse)
100
90
80
70
60
50
40
30
20
10
0
0
VIN = 8.3V
VIN = 12V
VIN = 14V
123456
Load Current (Amps)
5.3
5.0
4.8 Natural convection
4.5
4.3
4.0
3.8
3.5
3.3
3.0
20 25 30 35 40 45 50 55 60 65 70 75 80 85 90
Ambient Temperature (ºC)
OKY-T/5-D12 OSCILLOGRAMS: Vout = 1.2V
Output Ripple and Noise
(Vin=12V, Vout=1.2V, Iout=5A, Cload=0, ScopeBW=100MHz)
Step Load Transient Response (Vin=12V, Vout=1.2V, Cload=0, Iout=2.5A to 5A)
Trace 1=Vout, 100 mV/div. Trace 3=Iout, 2A/div.
Step Load Transient Response (Vin=12V, Vout=1.2V, Cload=0, Iout=5A to 2.5A)
Trace 1=Vout, 100 mV/div. Trace 3=Iout, 2A/div.
www.murata-ps.com/support
MDC_OKY-T/3,T/5-D12 Series.B15 Page 16 of 21










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Murata

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