IRE-5/24-Q12-N-C [MURATA]
Power Supply Module,;
| 型号： | IRE-5/24-Q12-N-C |
| 厂家： | 
muRata |
| 描述： | Power Supply Module, |
| 文件： | 总18页 (文件大小：2184K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
IRE-Q12 Series
120W Encapsulated Eighth-Brick EN50155-Compliant
Wide 4:1 Input Isolated DC-DC Converters
Output Voltage (Vdc)
Output Current (A)
Input Voltage Range (Vdc)
5
24
10
5
9-36
9-36
9-36
12
24
Typical Unit
PRODUCT OVERVIEW
FEATURES
ꢀ
High efficiency synchronous forward
topology.
The IRE-Q12 Series of isolated DC-DC converters feature a single 120W isolated output, from an input
voltage range of 9V – 36V DC in a fully enclosed package with industry standard eighth-brick
package and footprint. Two base plate options are available, one for minimal board space
consumption, the other flanged, slotted for mechanical fixing to a heatsink surface. Positive or
Negative Logic On/Off control is also available.
ꢀ
ꢀ
ꢀ
9 – 36 Volts DC wide input range.
5/12/24 V, up to 120 W total output power.
Standard and Flanged baseplate options.
Industry standard 1/8 brick format & pinout.
The IRE-Q12 Series is ideal for applications in the Railway/Industrial/Transportation area, designed to
accept input from 12V or 24V nominal battery voltages. The IRE output can be trimmed +/-10% while
delivering fast settling times to transient step loads and demonstrates no adverse effects from higher
capacitive loads. The IRE incorporates all relevant self-protection features including under-voltage
lockout, current limit, short circuit protection and over temperature shutdown.
ꢀ
ꢀ
Extensive self-protection features, including
over-temperature shutdown.
ꢀ
Small footprint DC-DC converter, ideal for
high current applications.
ꢀ
ꢀ
ꢀ
Meets AREMA® for 2828Vdc isolation.
Temperature range -40 to 85°C.
UL/EN 60950-1 safety approvals.
Flanged Baseplate Option
Standard Baseplate Option
SAFETY FEATURES
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
2000VAC I/O Isolation, Basic insulation.
UL 60950-1, 2nd edition.
CAN/CSA – C22.2 NO.60950-1.
EN 60950-1.
RoHS compliant.
For details go to
www.murata-ps.com/rohs
SDC_IRE_Q12_Series.A01 Page 1 of 18
IRE-Q12 Series
120W Encapsulated Eighth-Brick EN50155-Compliant
Wide 4:1 Input Isolated DC-DC Converters
PERFORMANCE SPECIFICATIONS SUMMARY AND ORDERING GUIDE
Output
Input
Package
(w/o flange)
Efficiency
Root Model
R/N (mV pk-pk)
Regulation (max.)
V
out
I
(V) (A, max.) (W)
out
Power
V
in Nom.
(V)
Range
(V)
Iin, no load
(A)
Iin, full
load (A)
Typ.
100
115
150
Max.
150
200
240
Line
Load
0.4%
0.3%
0.4%
Min.
90%
90%
90%
Typ.
Case (inches)
IRE-5/24-Q12
IRE-12/10-Q12
IRE-24/5-Q12
5
24
10
5
120
120
120
0.4%
0.3%
0.4%
12
12
12
9-36
9-36
9-36
0.4
0.4
10.9
10.9
10.9
92% 2.41 x 1.01 x 0.5
92% 2.41 x 1.01 x 0.5
92% 2.41 x 1.01 x 0.5
12
24
0.08
All specifications are at nominal input voltage and full load at room temperature (+25°C) unlessotherwise noted. See detailed specifications. Output capacitors are 1μF ceramic
multilayer in parallel with 10μF and the minimum requested input capacitor. I/O caps are necessary for our test equipment and may not be needed for your application.
SDC_IRE_Q12_Series.A01 Page 2 of 18
IRE-Q12 Series
120W Encapsulated Eighth-Brick EN50155-Compliant
Wide 4:1 Input Isolated DC-DC Converters
GENERAL SPECIFICATIONS, ALL MODELS
All specifications are at full load with nominal input and output voltage and Ta +25°C unless otherwise noted. Output capacitors are 1μF ceramic multilayer in parallel with 10μF and minimum requested input
capacitor. I/O caps are necessary for our test equipment and may not be required for your application. See detailed specifications.
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Notes and Conditions
Min.
9
Typ.
Max.
Units
Operating
Continuous
36
50
Vdc
Vdc
°C
Transient Operating
Storage Temperature
Input to Output Isolation
Voltage at ON/OFF control pin
100ms max., Operating
-55
-2
125
2000
18
60 sec. (equivalent to factory test)
VAC
Vdc
ISOLATION CHARACTERISTICS
Isolation Test : Input to Output
Input to Baseplate
Notes and Conditions
Min.
2828
1500
1500
Typ.
Max.
Units
Vdc
Vdc
Vdc
Actual Factory Test Voltage
Output to Baseplate
Insulation: Safety Rating
I/O Resistance
Basic
1000
Input to Output Resistance at 500Vdc
Input to Output Capacitance
30
MΩ
pF
I/O Capacitance
Designed to meet EN50155 Railway standard, the isolation voltage required for Power over Ethernet applications and the American Railway Engineering and Maintenance-of-Way Association
(AREMA®) for Communications and Signals.
RELIABILITY/SAFETY/ENVIRONMENTAL
Safety: Certified to
UL 60950-1/A12:2011, CSA-C22.2 No.60950-1/A1:2011, IEC/EN 60950-1/A12;2011 , 2nd Edition
Belcore, Telcordia SR-332,Issue 3, Method 1, Case 1, Gf 1.7M
YES
Hrs
Calculated MTBF
Note: An external input fuse must always be used to meet these safety requirements.
Mean Time Before Failure (MTBF) is calculated using the Telcordia (Belcore) SR-332 Issue, Case 3, ground benign controlled conditions.
Operating temperature = +40°C, full output load, natural air convection.
MECHANICAL SPECIFICATIONS
Standard Baseplate (Without Flange)
With Flanged Baseplate
2.41 x 1.01 x 0.50 / 61.2 x 25.7 x 12.7
2.41 x 1.45 x 0.50 / 61.2 x 36.8 x 12.7
1.84 / 52.16
Outline Dimensions – (L x W x H)
In./mm
Weight
Oz./g
Baseplate Material
Case Material
Aluminum
-
-
Plastic
Pin Diameter (Power & Signal)
Pin Material
Through Hole
Through Hole
Nickel subplate
Gold overplate
0.062 & 0.040 / 1.57 & 1.02
In./mm
Copper alloy
50μ inches, minimum
Pin Plating Metal and Thickness
5μ inches, minimum
SDC_IRE_Q12_Series.A01 Page 3 of 18
IRE-Q12 Series
120W Encapsulated Eighth-Brick EN50155-Compliant
Wide 4:1 Input Isolated DC-DC Converters
FEATURES
Notes and Conditions
Positive Logic
Min.
Typ.
Max.
Units
ON/OFF Control (P suffix)
Off-State Voltage
On-State Voltage
ON/OFF Control (N suffix)
Off-State Voltage
On-State Voltage
Pull LOW to Disable Output
ON/OFF pin HIGH or Open, Output = ON
Negative Logic
0
1.0
15
V
V
3.5
ON/OFF pin HIGH or Open, Output = OFF
Pull LOW to Enable Output
2.5
15
V
V
-0.1
0.8
ON/OFF Control Current (Either
Option)
Current thru ON/OFF pin
Current thru ON/OFF pin
Remote Sense Compensation
Output Voltage Trim Range
Switching Frequency
ON/OFF pin Voltage = 0V
1
2
mA
μA
%
ON/OFF pin Voltage = 15V
50
Connected to respective Vo pin
Pout<=Max rated power (see Tech. Notes)
10
-10
10
%
220
240
260
kHz
Note: The On/Off pin is normally driven by an open-collector/open-drain drive circuit. External logic may be used if voltage levels are fully compliant to specifications.
TEMPERATURE AND DERATING LIMITS
Notes and Conditions
Min.
Typ.
Max.
Units
°C
Semiconductor Junction
Temperature
Tjmax-25
Board Temperature
UL rated max operating temp 130°C
Baseplate
130
130
115
130
95
°C
°C
°C
°C
%
Transformer/Inductor Temperature
Operating Temperature
Over-Temperature Shutdown
Humidity (Operating)
-40
115
5
125
Cooling
Natural/Free Air Convection
-
-
Baseplate Temperature in Degrees Celsius
Fig. A-1: Derating Max Baseplate (115ºC) Temperature, Vin = 24V (Tested on 10x10 inch PCB)
SDC_IRE_Q12_Series.A01 Page 4 of 18
IRE-Q12 Series
120W Encapsulated Eighth-Brick EN50155-Compliant
Wide 4:1 Input Isolated DC-DC Converters
ELECTROMAGNETIC EMISSIONS
Conducted Emissions
External filter required, see app. notes
EN55022/CISPR22 CLASS B
Item
1
Reference
Part Number
GRM32ER72A105KA01L
GRM319R72A104KA01D
PG0060T
Description
Vendor
Murata
Murata
Pulse
C1, C2, C3, C4, C5
SMD CERAMIC-100V-1000nF-X7R-1210
SMD CERAMIC 100V-100nF- 10%-X7R-1206
COMMON MODE-473uH- 25%-14A
2
C6
3
L1, L2
4
C8, C9, C10, C12
C7
GRM55DR72J224KW01L
UHE2A221MHD
SMD CERAMIC 630V-0.22uF- 10%-X7R-2220
Aluminum 100V-220uF - 10%-long lead
Murata
Nichicon
5
6
C12
NA
ENVIRONMENTAL QUALIFICATION TESTING
Parameters
Test conditions
Operating
Yes
Vibration
EN 61373:1999 Category I, Class B, Body mounted
EN 61373:1999 Category I, Class B, Body mounted
Mechanical Shock
DMTBF (Life Test)
Temperature Cycling Test (TCT)
Yes
Vin nom , units at derating point,101 days
Yes
-40 °C to 125 °C, unit temp. ramp 15 °C/min.,500 cycles
Yes
Power and Temperature Cycling Test
(PTCT)
Temperature operating = min to max, Vin = min to max, Load = 50% of rated maximum,100 cycles
85°C, 85RH,Vin=max, Load=min load,1072 Hour (72hours with a pre-conditioning soak, unpowered)
Yes
No
Temperature, Humidity and Bias (THB)
Damp heat test, cyclic
Dry heat test
EN60068-2-30: Temperatures: + 55 °C and + 25 °C; Number of cycles: 2 (respiration effect);Time:
2 x 24 hours; Relative Humidity: 95%
No
EN60068-2-2, Vin = nom line, Full load, 85°C for 6 hours.
Yes
Yes
High Temperature Operating Bias
(HTOB)
Vin = min to max, 95% rated load, units at derating point, 500 hours
Low Temperature operating
Vin = nom line, Full load,-40°C for 2 hours.
Yes
Yes
Yes
Yes
Yes
No
Highly Accelerated Life Test (HALT)
High temperature limits, low temperature limits, Vibration limits, Combined Environmental Tests.
Class A in CISSPR 22 or IEC62236-3-2 (GB/T 24338.4)
IEC 6100-4-2: +/-8kv contact discharge /+/-15kv air discharge
EN50121-3-2
EMI
ESD
Surge Protection
Solderability
MIL-STD-883, method 2003 (IPC/EIA/JEDEC J-SID-002B)
SDC_IRE_Q12_Series.A01 Page 5 of 18
IRE-Q12 Series
120W Encapsulated Eighth-Brick EN50155-Compliant
Wide 4:1 Input Isolated DC-DC Converters
ELECTRICAL INPUT DATA
All specifications are at full load with nominal input and output voltage and Ta +25°C unless otherwise noted. Output capacitors are 1μF ceramic multilayer in parallel with 10μF and minimum requested input
capacitor. I/O caps are necessary for our test equipment and may not be required for your application. See detailed specifications.
INPUT CHARACTERISTICS
Notes and Conditions
Min.
9
Typ.
12
Max.
36
Units
Vdc
Operating Input Voltage Range
Input Voltage, Short Term
Input Under-Voltage Lockout
Turn-On Voltage Threshold
Turn-Off Voltage Threshold
Lockout Voltage Hysteresis
Input Current Maximum
100ms Transient
50
Vdc
8.1
7.8
8.8
8.4
8.95
8.8
Vdc
Vdc
Vdc
A
0.4
1.0
Vin = 9V, Full Load
14.5
14.96
Vin = 12V: 5V/12Vout
24Vout
400
80
600
120
No-Load Input Current
mA
Disabled Input Current
Inrush Current (I2t)
Vin = 12V, Either Logic
15
20
0.2
20
mA
A2S
A
0.1
External Input Fuse
Fast acting external fuse recommended
Recommended
External Input Capacitance
Reverse Polarity Protection
220
330
μF
External
If reverse polarity is accidentally applied to the input, to ensure reverse input protection with full output load, always connect an external fast blow input fuse in series with the +Vin input.
SDC_IRE_Q12_Series.A01 Page 6 of 18
IRE-Q12 Series
120W Encapsulated Eighth-Brick EN50155-Compliant
Wide 4:1 Input Isolated DC-DC Converters
5V OUTPUT SPECIFICATIONS, ROOT MODEL IRE-5/24-Q12
All specifications are at full load with nominal input and output voltage and Ta +25°C unless otherwise noted.
OUTPUT CHARACTERISTICS
Total Output Power
Notes and Conditions
See Derating
Min.
0
Typ.
Max.
120
Units
W
Output Voltage Set Point
Vin = Nominal, Io = 0A, Ta = 25°C
4.95
5
5.05
Vdc
Hiccup mode; auto recovery; over full temp
range
Output Over-Voltage Protection
6.0
7.0
8.5
Vdc
Output Voltage Regulation
Over Load
Vin = 12V, Iout from Min to Max
Iout = Full load, Vin from Min to Max.
Vin = 12V, Ta = -40°C to 85°C
20MHz bandwidth
0.2
0.2
0.4
0.4
%
%
Over Line
Over Temperature
Output Voltage Ripple and Noise
0.008
0.02
%/°C
All conditions, 1μF ceramic, 10μF tantalum
& 330μF E-Cap
Peak-to-Peak
100
150
mVp-p
Output Current Range
Current-Limit Inception
0
24
36
A
A
Output Voltage 10% Low
26
30
Continuous, Hiccup technique with auto
recovery
Short Circuit Current
Output Capacitance
2.0
4.5
A
Nominal Vout at full load
330
4700
μF
Do not exceed maximum power ratings if adjusting output trim values.
Output noise may be further reduced by installing an external filter. Larger caps (especially low-ESR ceramic types) may slow transient response and degrade dynamic performance. Thoroughly test your application
with all components installed. See Application Notes for additional information.
DYNAMIC CHARACTERISTICS
Notes and Conditions
1A/μS, 1μF+10μF load cap
Min.
Typ.
Max.
Units
Output Voltage During Load
Transient
50% to 75% to 50% Iout max,
25% to 75% to 25% Iout max
200
350
300
450
Step Change in Output Current
mV
μS
Settle Time
To within 1% Vout nom
70
120
Turn-On Transient
Start-up Time, From ON/OFF
Control
To Vout = 90% nominal
To Vout = 90% nominal
30
30
20
60
60
40
2
mS
mS
mS
%
Start-up Time, From Input
Time from 10% to 90% of nominal output
voltage
Rise Time
Output Voltage Overshoot
Regulation specifications describe the deviation as the input line voltage or output load current is varied from a nominal midpoint value to either extreme.
External capacitance: 1µF multilayer ceramic in parallel with 10µF electrolytic output and a 220µF/100V input capacitor. All caps described are low ESR.
These capacitors are necessary for our test equipment and may not be needed in your application. All models are stable and regulate within spec without external capacitance.
Testing must be kept short enough that the converter does not appreciably heat up during testing. For extended testing, use plenty of cooling.
EFFICIENCY
100% Load
100% Load
100% Load
Notes and Conditions
Min.
90
Typ.
91.5
92.0
90.5
Max.
Units
%
Vin = 9V
Vin = 12V
Vin = 24V
90
%
89
%
SDC_IRE_Q12_Series.A01 Page 7 of 18
IRE-Q12 Series
120W Encapsulated Eighth-Brick EN50155-Compliant
Wide 4:1 Input Isolated DC-DC Converters
TYPICAL PERFORMANCE DATA, IRE-5/24-Q12
Efficiciency vs. Line Voltage and Load Current @ 25°C
Power Dissipation vs. Load Current @ 25°C
18
95
92
89
86
83
80
77
74
71
68
65
16
9V
14
12V
12
36V
10
8
9V
12V
36V
6
4
2
2.5 4.8 7.2 9.6 12 14.4 16.8 19.2 21.6 24
Load Current (A)
2.5
4.8
7.2
9.6
12 14.4 16.8 19.2 21.6 24
Load Current (A)
On/Off Enable Delay (Vin = 12V; Vout = nom; Load = 0A; Cload = 330μF;
CH2: Vout; CH4: Enable; Ta = +25°C)
On/Off Enable Delay (Vin = 12V; Vout = nom; Load = 24A; Cload = 4700μF;
CH2: Vout; CH4: Enable; Ta = +25°C)
Output Ripple and Noise (Vin = 12V; Iout = 24A; Ta = 25°C; Cload = 1μF
ceramic||10μF tantalum|| 330μF Ecap; Scope BW = 20MHz)
Transient Response (Vin = 12V, Vout = Nom, Iout = 50-75%; Cload = 1μF
ceramic||10μF tantalum|| 330μF Ecap; Slew Rate = 1A/μs, Ta = 25°C)
SDC_IRE_Q12_Series.A01 Page 8 of 18
IRE-Q12 Series
120W Encapsulated Eighth-Brick EN50155-Compliant
Wide 4:1 Input Isolated DC-DC Converters
12V OUTPUT SPECIFICATIONS, ROOT MODEL IRE-12/10-Q12
All specifications are at full load with nominal input and output voltage and Ta +25°C unless otherwise noted.
OUTPUT CHARACTERISTICS
Total Output Power
Notes and Conditions
See Derating
Min.
0
Typ.
Max.
120
Units
W
Output Voltage Set Point
Vin = Nominal, Io = 0A, Ta = 25°C
11.88
12
12.12
Vdc
Hiccup mode; auto recovery; over full temp
range
Output Over-Voltage Protection
13.8
15.0
16.0
Vdc
Output Voltage Regulation
Over Load
Vin = 12V, Iout from Min to Max
Iout = Full load, Vin from Min to Max.
Vin = 12V, Ta = -40°C to 85°C
20MHz bandwidth
0.15
0.15
0.3
0.3
%
%
Over Line
Over Temperature
Output Voltage Ripple and Noise
0.008
0.02
%/°C
All conditions, 1μF ceramic, 10μF tantalum
& 330μF E-Cap
Peak-to-Peak
115
200
mVp-p
Output Current Range
Current-Limit Inception
0
10
A
A
Output Voltage 10% Low
11
14.5
1.0
18.2
Continuous, Hiccup technique with auto
recovery
Short Circuit Current
Output Capacitance
2.3
A
Nominal Vout at full load
200
4700
μF
Do not exceed maximum power ratings if adjusting output trim values.
Output noise may be further reduced by installing an external filter. Larger caps (especially low-ESR ceramic types) may slow transient response and degrade dynamic performance. Thoroughly test your application
with all components installed. See Application Notes for additional information.
DYNAMIC CHARACTERISTICS
Notes and Conditions
1A/μS, 1μF+10μF load cap
Min.
Typ.
Max.
Units
Output Voltage During Load
Transient
50% to 75% to 50% Iout max,
25% to 75% to 25% Iout max
200
450
300
600
Step Change in Output Current
mV
μS
Settle Time
To within 1% Vout nom
150
200
Turn-On Transient
Start-up Time, From ON/OFF
Control
To Vout = 90% nominal
To Vout = 90% nominal
25
25
20
40
40
60
2
mS
mS
mS
%
Start-up Time, From Input
Time from 10% to 90% of nominal output
voltage
Rise Time
Output Voltage Overshoot
Regulation specifications describe the deviation as the input line voltage or output load current is varied from a nominal midpoint value to either extreme.
External capacitance: 1µF multilayer ceramic in parallel with 10µF electrolytic output and a 220µF/100V input capacitor. All caps described are low ESR.
These capacitors are necessary for our test equipment and may not be needed in your application. All models are stable and regulate within spec without external capacitance.
Testing must be kept short enough that the converter does not appreciably heat up during testing. For extended testing, use plenty of cooling.
EFFICIENCY
100% Load
100% Load
100% Load
Notes and Conditions
Min.
90
Typ.
92
Max.
Units
%
Vin = 9V
Vin = 12V
Vin = 24V
90
92
%
88
92
%
SDC_IRE_Q12_Series.A01 Page 9 of 18
IRE-Q12 Series
120W Encapsulated Eighth-Brick EN50155-Compliant
Wide 4:1 Input Isolated DC-DC Converters
TYPICAL PERFORMANCE DATA, IRE-12/10-Q12
Efficiciency vs. Line Voltage and Load Current @ 25°C
Power Dissipation vs. Load Current @ 25°C
16
97
94
91
88
85
82
79
76
73
70
67
64
9V
14
12V
12
24V
9V
10
36V
12V
24V
36V
8
6
4
2
1
2
3
4
5
6
7
8
9
10
1
2
3
4
5
6
7
8
9
10
Load Current (A)
Load Current (A)
On/Off Enable Delay (Vin = 12V; Vout = nom; Load = 0A; Cload = 200μF;
CH2: Vout; CH4: Enable; Ta = +25°C)
On/Off Enable Delay (Vin = 12V; Vout = nom; Load =10A; Cload = 4700μF;
CH2: Vout; CH4: Enable; Ta = +25°C)
Output Ripple and Noise (Vin =12V; Iout = 10A; Ta = 25°C; Cload = 1μF
ceramic||10μF tantalum || 200μF Ecap; Scope BW = 20MHz)
Transient Response (Vin = 12V, Vout = Nom, Iout = 50-75,Cload = 1μF
ceramic||10μF tantalum|| 200μF Ecap; Slew Rate = 1A/μs, Ta =25°C)
SDC_IRE_Q12_Series.A01 Page 10 of 18
IRE-Q12 Series
120W Encapsulated Eighth-Brick EN50155-Compliant
Wide 4:1 Input Isolated DC-DC Converters
24V OUTPUT SPECIFICATIONS, ROOT MODEL IRE-24/5-Q12
All specifications are at full load with nominal input and output voltage and Ta +25°C unless otherwise noted.
OUTPUT CHARACTERISTICS
Total Output Power
Notes and Conditions
See Derating
Min.
0
Typ.
Max.
120
Units
W
Output Voltage Set Point
Vin = Nominal, Io = 0A, Ta = 25°C
23.76
24
24.24
Vdc
Hiccup mode; auto recovery; over full temp
range
Output Over-Voltage Protection
28.0
30.0
35.0
Vdc
Output Voltage Regulation
Over Load
Vin = 12V, Iout from Min to Max
Iout = Full load, Vin from Min to Max.
Vin = 12V, Ta = -40°C to 85°C
20MHz bandwidth
0.2
0.2
0.4
0.4
%
%
Over Line
Over Temperature
Output Voltage Ripple and Noise
0.008
0.02
%/°C
All conditions, 1μF ceramic, 10μF tantalum
& 330μF E-Cap
Peak-to-Peak
150
240
mVp-p
Output Current Range
Current-Limit Inception
0
5
A
A
Output Voltage 10% Low
6.0
7.0
1.0
8.5
Continuous, Hiccup technique with auto
recovery
Short Circuit Current
Output Capacitance
2.0
A
Nominal Vout at full load
100
1000
μF
Do not exceed maximum power ratings if adjusting output trim values.
Output noise may be further reduced by installing an external filter. Larger caps (especially low-ESR ceramic types) may slow transient response and degrade dynamic performance. Thoroughly test your application
with all components installed. See Application Notes for additional information.
DYNAMIC CHARACTERISTICS
Notes and Conditions
1A/μS, 1μF+10μF load cap
Min.
Typ.
Max.
Units
Output Voltage During Load
Transient
50% to 75% to 50% Iout max,
25% to 75% to 25% Iout max
250
350
350
500
Step Change in Output Current
mV
μS
Settle Time
To within 1% Vout nom
200
500
Turn-On Transient
Start-up Time, From ON/OFF
Control
To Vout = 90% nominal
To Vout = 90% nominal
25
25
25
40
40
60
2
mS
mS
mS
%
Start-up Time, From Input
Time from 10% to 90% of nominal output
voltage
Rise Time
Output Voltage Overshoot
Regulation specifications describe the deviation as the input line voltage or output load current is varied from a nominal midpoint value to either extreme.
External capacitance: 1µF multilayer ceramic in parallel with 10µF electrolytic output and a 220µF/100V input capacitor. All caps described are low ESR.
These capacitors are necessary for our test equipment and may not be needed in your application. All models are stable and regulate within spec without external capacitance.
Testing must be kept short enough that the converter does not appreciably heat up during testing. For extended testing, use plenty of cooling.
EFFICIENCY
100% Load
100% Load
100% Load
Notes and Conditions
Min.
90
Typ.
91.5
92.0
91.0
Max.
Units
%
Vin = 9V
Vin = 12V
Vin = 24V
90
%
88
%
SDC_IRE_Q12_Series.A01 Page 11 of 18
IRE-Q12 Series
120W Encapsulated Eighth-Brick EN50155-Compliant
Wide 4:1 Input Isolated DC-DC Converters
TYPICAL PERFORMANCE DATA, IRE-24/5-Q12
Efficiciency vs. Line Voltage and Load Current @ 25°C
Power Dissipation vs. Load Current @ 25°C
18
92
90
88
86
84
82
80
78
76
74
72
70
16
9V
14
12V
12
10
36V
9V
8
6
4
2
12V
36V
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
Load Current (A)
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
Load Current (A)
On/Off Enable Delay (Vin = 12V; Vout = nom; Load = 0A; Cload = 100μF;
CH2: Vout; CH4: Enable; Ta = +25°C)
On/Off Enable Delay (Vin = 12V; Vout = nom; Load = 5A; Cload =1000μF;
CH2: Vout; CH4: Enable; Ta = +25°C)
Output Ripple and Noise (Vin =12V; Iout = 5A; Ta = 25°C; Cload = 1μF
ceramic||10μF tantalum|| 100μF Ecap; Scope BW = 20MHz)
Transient Response (Vin = 12V, Vout = Nom, Iout = 50-75,Cload =1μF
ceramic||10μF tantalum|| 100μF Ecap; Slew Rate = 1A/μs, Ta = 25°C)
SDC_IRE_Q12_Series.A01 Page 12 of 18
IRE-Q12 Series
120W Encapsulated Eighth-Brick EN50155-Compliant
Wide 4:1 Input Isolated DC-DC Converters
MECHANICAL SPECIFICATIONS
Flanged Baseplate:
Bottom View
Side View
Top View
Standard Baseplate (Non-flanged):
Bottom View
Side View
Top View
Notes:
All dimensions are in Inches [Millimeters].
Tolerance: x.xx in, 0.02 (x.x mm, 0.5).
x.xxx in, 0.010 (x.xx mm, 0.25).
Pin diameter: 0.04in for Pin no. 1-3 and 5-7
0.062in for Pin no. 4 and 8
Pin material: See General Data, Mechanical Specifications
SDC_IRE_Q12_Series.A01 Page 13 of 18
IRE-Q12 Series
120W Encapsulated Eighth-Brick EN50155-Compliant
Wide 4:1 Input Isolated DC-DC Converters
SDC_IRE_Q12_Series.A01 Page 14 of 18
IRE-Q12 Series
120W Encapsulated Eighth-Brick EN50155-Compliant
Wide 4:1 Input Isolated DC-DC Converters
SHIPPING TRAYS AND BOX DIMENSIONS
SHIPPING TRAY DIMENSIONS
Material: Low density closed cell polyethylene static dissipative foam
SDC_IRE_Q12_Series.A01 Page 15 of 18
IRE-Q12 Series
120W Encapsulated Eighth-Brick EN50155-Compliant
Wide 4:1 Input Isolated DC-DC Converters
TECHNICAL NOTES
Input Fusing
A low ESR Cbus in the input circuit shown below is a practical solution that
can be used to minimize the effects of inductance in the input traces. For
optimum performance, components should be mounted as close to the DC-
DC converter as possible.
Most if not all applications and/or safety agencies will require the
installation of an external input fuse for power conversion components to
meet specific safety agency requirements. For the IRE series DC-DC
converters, we recommend the use of a fast blow fuse, installed in the
ungrounded input supply line. See recommended fuse value specified for
each module.
There are several papers that have been written regarding this topic and we
suggest that that the power systems engineer review for further information:
References:
All relevant national and international safety standards and regulations
must be observed by the installer. For system safety agency approvals, the
converters must be installed in compliance with the requirements of the
end use safety standard, i.e. IEC/EN/UL60950-1.
1) Middlebrook, R.D. “Input Filter Considerations in Design and Application of
Switching Regulators” IEE IAS Annual Meeting, 1976
2) Feng, X. et al, “individual Load Impedance Specification for a Stable DC
Input Reverse-Polarity Protection
If the input voltage polarity is accidentally reversed, an internal diode will
become forward biased and likely draw excessive current from the power
source. If this source is not current limited or the circuit appropriately
fused, it could cause permanent damage to the converter.
I/O Filtering, Input Ripple Current, and Output Noise
All models in the IRE Series are tested/specified for input reflected ripple
current, input terminal ripple current and output noise using the specified
external input/output components/circuits and layout as shown in the
following figures. External input capacitors (Cbus in Figure 1 Measuring Input
Ripple Current and Output Noise) serve primarily as energy-storage elements,
minimizing line voltage variations caused by transient IR drops in conductors
from backplane to the DC-DC. Input caps should be selected for bulk
capacitance (at appropriate frequencies), low ESR, and high RMS-ripple-
current ratings. The switching nature of DC-DC converters requires that dc
voltage sources have low ac impedance as highly inductive source
impedance can affect system stability. The input ripple is measured with
simulated source impedance Ls. Capacitor Cs to offset possible battery
impedance. Your specific system configuration may necessitate additional
considerations.
There is no Input reverse-Polarity Protection. An external circuit must be
added.
Input Under-Voltage Shutdown and Start-Up Threshold
Under normal start-up conditions, devices will not begin to regulate
properly until the ramping-up input voltage exceeds the Start-Up Threshold
Voltage. Once operating, devices will not turn off until the input voltage
drops below the Under-Voltage Shutdown limit. Subsequent re-start will not
occur until the input is brought back up to the Start-Up Threshold. This built
in hysteresis prevents any unstable on/off situations from occurring at a
single input voltage.
In critical applications, output ripple/noise (Figure 1. Measurement Input
Ripple and Output Noise Circuit) may be reduced below specified limits using
filtering techniques, the simplest of which is the installation of additional
external output capacitors. They function as true filter elements and should be
selected for bulk capacitance, low ESR and appropriate frequency response.
Care must be taken not to exceed the maximum rated Cout specification as
this can cause system instability and possible failure of the dc-dc module.
Start-Up Time
The VIN to VOUT Start-Up Time is the time interval between the points at
which the ramping input voltage crosses the Start-Up Threshold and the
fully loaded output voltage reaches and remains above 90% of its specified
output voltage.
Actual measured time will vary with input source impedance, external
input capacitance, and the slew rate and final value of the input voltage as
it appears at the converter. The IRE Series implements a soft start circuit
to limit the duty cycle of its PWM controller at power up, thereby limiting
the input inrush current.
All external capacitors should have appropriate voltage ratings and be located
as close to the converter as possible. Temperature variations for all relevant
parameters should also be taken carefully into consideration. The most
effective combination of external I/O capacitors will be a function of line
voltage and source impedance, as well as particular load and layout
conditions.
The On/Off Control to VOUT start-up time assumes the converter has its
nominal input voltage applied but is turned off via the On/Off Control pin.
The specification defines the interval between the points at which the
converter is turned on (released) and the fully loaded output voltage
reaches and remains above 90% of its specified output voltage. Similar to
the VIN to VOUT start-up, the On/Off Control to VOUT start-up time is also
governed by the internal soft start circuitry and external load capacitance.
The difference in start-up time from VIN to VOUT and from On/Off Control to
VOUT is therefore insignificant.
Input Source Impedance
The input of a dc-dc converter acts like a negative resistance and must be
compensated by providing a low impedance input source to insure the
system will be stable. The dc-dc converter performance and stability will be
compromised if the source is not compensated properly
Figure T1. Measurement Input Ripple and Output Noise Circuit
SDC_IRE_Q12_Series.A01 Page 16 of 18
IRE-Q12 Series
120W Encapsulated Eighth-Brick EN50155-Compliant
Wide 4:1 Input Isolated DC-DC Converters
Positive ("P" suffix) logic models are enabled when the On/Off pin is left open or
is pulled high (see specifications) with respect to the –Input. Positive-logic
devices are disabled when the on/off pin is pulled low with respect to the –Input.
Negative (“N” suffix) logic devices are off when the On/Off pin is left open or is
pulled high (see specifications), and on when the pin is pulled low with respect to
the –Input. See specifications.
Floating Outputs
Since these are isolated DC-DC converters, their outputs are “floating” with
respect to their input. Designers will normally use the –Output as the ground/
return of the load circuit. You can however, use the +Output as ground/return
to effectively reverse the output polarity.
Dynamic control of the remote on/off function is best accomplished with a
mechanical relay or an open-collector/open-drain drive circuit (optically isolated if
appropriate). The drive circuit should be able to sink appropriate current (see
Performance Specifications) when activated and withstand appropriate voltage
when deactivated.
Thermal Shutdown
The IRE series converters are equipped with thermal-shutdown circuitry. If
environmental conditions cause the temperature of the DC-DC converter to
rise above the designed operating temperature, a precision temperature
sensor will power down the unit. When the internal temperature decreases
below the threshold of the temperature sensor, the unit will self-start.
The thermal shutdown is set to a point where the semiconductors should
never exceed their “maximum ratings”. The thermal shutdown is set to avoid
“nuisance” shutdown under fault conditions. i.e. if the air conditioning goes
down in the data center, the module can run at a higher temperature for
some time. We do not recommend that you run the module continuously
above the thermal derating curve recommendations.
It is recommended that you fully understand the “recommended operating
temperature” and verify that under normal operating conditions the module
temperature is not exceeded in your application.
Figure T2. ON/OFF Control Circuit
See Performance/Functional Specifications.
Remote Sense
Note: The Sense and Vout lines are internally connected through low-value
resistors. Nevertheless, if the sense function is not used for remote regulation,
the user should connect the +Sense to +Vout and –Sense to –Vout directly at the
DC-DC converter pins. IRE series converters employ a sense feature to provide
point of use regulation, thereby overcoming moderate IR drops in PCB conductors
or cabling. The remote sense lines carry very little current and therefore require
minimal cross-sectional-area conductors. The sense lines, which are coupled to
their respective output lines, are used by the feedback control-loop to regulate
the output. As such, they are not low impedance points and must be treated with
care in layouts and cabling. Sense lines on a PCB should be run adjacent to dc
signals, preferably ground.
Output Over-Voltage Protection
Vout is controlled via a closed loop system and monitored for fault conditions
(over voltage, over current) such as an over-voltage condition. If Vout for any
reason rises above the specified OVP set point the converter will shut down
causing Vout to decrease rapidly (depending on load conditions). Following a
time-out period the module will restart causing Vout to ramp to its specified
set-point. If the fault condition persists and Vout again exceeds the OVP set
point the converter will again enter the shutdown cycle. This on/off cycling is
referred to as “hiccup” mode. When the fault condition has been corrected
the module will return to normal operations.
[Vout(+) – Vout(-)] – [Sense(+) – Sense(-)] ≤ 10%×Vout
Current Limiting
In cables and discrete wiring applications, twisted pair or other techniques should
be used. Output over-voltage protection is monitored at the output voltage pin,
not the Sense pin. Therefore, excessive voltage differences between Vout and
Sense in conjunction with trim adjustment of the output voltage can cause the
over-voltage protection circuitry to activate (see Performance Specifications for
over-voltage limits).
Power derating is based on maximum output current and voltage at the
converter’s output pins. Use of trim and sense functions can cause output
voltages to increase, thereby increasing output power beyond the converter’s
specified rating, or cause output voltages to climb into the output over-voltage
region. Therefore, the designer must ensure:
As soon as the output current increases to approximately 130% of its rated
value, the DC-DC converter will go into a current-limiting mode. In this
condition, the output voltage will decrease proportionately with increases in
output current, thereby maintaining somewhat constant power dissipation.
This is commonly referred to as power limiting. Current limit inception is
defined as the point at which the full-power output voltage falls below the
specified tolerance. See Performance/Functional Specifications. If the load
current, being drawn from the converter, is significant enough, the unit will
go into a short circuit condition as described below.
Short Circuit Condition
(Vout at pins) × (Iout) ≤ rated output power
When a converter is in current-limit mode, the output voltage will drop as the
output current demand increases. If the output voltage drops too low, the
magnetically coupled voltage used to develop primary side voltages will also
drop, thereby shutting down the PWM controller. Following a time-out period,
the PWM will restart causing the output voltage to begin ramping to their
appropriate value. If the short-circuit condition persists, another shutdown
cycle will be initiated. This on/off cycling is referred to as “hiccup” mode. The
hiccup cycling reduces the average output current, thereby preventing
internal temperatures from rising to excessive levels. The IRE Series is
capable of enduring an indefinite short circuit output condition.
Figure T3. Remote Sense Circuit
On/Off Control
The input-side, remote On/Off Control function can be ordered to operate with
SDC_IRE_Q12_Series.A01 Page 17 of 18
IRE-Q12 Series
120W Encapsulated Eighth-Brick EN50155-Compliant
Wide 4:1 Input Isolated DC-DC Converters
Output Voltage Adjustment (TRIM)
Some detailed trim resistance values are listed in the table below.
The TRIM input permits the user to adjust the output voltage across the sense leads
up or down according to the trim range specifications.
To decrease the output voltage, the user should connect a resistor between TRIM
pin and SENSE (–) pin. For a desired decrease of the nominal output voltage, the
value of the resistor should be:
Trim Up Resistance
Trim Down Resistance
PN
Vout(V)
Rtrim_up(kΩ)
1585
798
Vout(V) Rtrim_down kΩ)
5.11
ʚ ʛ
Ǝ 10.22 kΩ
R
Ɣ
5.05
5.1
4.9
4.8
245.3
117.5
53.7
40.9
32.4
21.7
15.3
245.3
74.9
40.9
32.4
26.3
18.2
15.3
245.3
117.5
53.7
32.4
26.3
21.7
15.3
ΠΗΛΒΝΥΜ
Δ%
Where:
VΜΝΛΗΜΏΚ Ǝ VΒΓΡΗΠΓΒ
5.2
404
4.6
Δ% Ɣ ɴ
ɴ
VΜΝΛΗΜΏΚ
5.25
5.3
326
4.5
273
4.4
To increase the output voltage, the user should connect a resistor between TRIM
pin and SENSE (+) pin. For a desired increase of the nominal output voltage, the
value of the resistor should be:
5.4
207
4.2
5.5
168
4.0
5.11 Ɛ ͐
Ɛ ʚ1 ƍ Δ%ʛ 5.11
)*($)ꢁ'
͌
Ɣ
Ǝ
/-$(ꢀ+
12.12
12.36
12.6
12.72
12.84
13.08
13.2
24.24
24.48
24.96
25.44
25.68
25.92
26.4
4535
1538
939
11.76
11.28
10.8
10.56
10.32
9.84
9.6
1.225 Ɛ Δ%
Δ%
Ǝ 10.22 ʚ͟Ωʛ
789
682
539
489
Figure 4. Trim Up connections to increase Vout
9590
4840
2465
1673
1447
1277
1040
23.52
23.04
22.08
21.12
20.64
20.16
19.2
Figure T5. Trim Down connections to decrease Vout
Through-Hole Soldering Guidelines
Note: The Trim feature does not affect the voltage at which the output over-
voltage protection (OVP) circuit is triggered. Trimming the output voltage too
high may cause the over-voltage protection circuit to trigger, particularly during
load transients. For the converter to meet its rated specifications the maximum
variation of the dc value of Vout, due to both trimming and remote load voltage
drop should not exceed the output voltage trim range.
Murata Power Solutions recommends the TH soldering specifications below when
installing these converters. These specifications vary depending on the solder type.
Exceeding these specifications may cause damage to the product. Your production
environment may differ; therefore please thoroughly review these guidelines with
your process engineers
Wave Solder Operations for Through-Hole Mounted Products (THMT)
For Solder based on:
Sn/Ag/Cu
Sn/Pb
Maximum Preheat Temperature
115° C.
105° C.
Maximum Pot Temperature
Maximum Solder Dwell Time
270° C.
250° C.
7 seconds
6 seconds
Murata Power Solutions, Inc.
This product is subject to the following operating requirements
and the Life and Safety Critical Application Sales Policy:
Refer to: http://www.murata-ps.com/requirements/
129 Flanders Road, Westborough, MA 01581 USA
ISO 9001 and 14001 REGISTERED
Murata Power Solutions, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other
technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not
imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to
changewithout notice.
© 2019 Murata Power Solutions, Inc.
SDC_IRE_Q12_Series.A01 Page 18 of 18
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