indefinite short-circuit protection. The synchronous
rectifier topology along with advanced thermal
management delivers high efficiency for minimal
heat generation and “no heat sink” operation.
The UWQ-12/17-Q48T series is certified to
safety standards UL/EN/IEC/CSA 60950-1, 2nd
edition. It meets Class B EMI conducted emission
compliance to EN55022, CISPR22 with an external
filter.
APPLICATIONS
Wireless base stations embedded systems,
datacom and telecom installations
farms, data centers and cellular repeater sites
Disk
Remote sensor systems
Instrumentation systems, R&D platforms, auto-
mated test fixtures
concentrators, voice forwarding and
Data
speech processing systems
F1
+Vin (1)
Barrier
+Vout (8)
External
DC
Power
Source
On/Off
Control
(2)
Controller
and Power
Open = On
Reference and
Error Amplifier
Trim (6)
logic)
-Vin (3)
-Vout (4)
Figure 1. Connection Diagram
Typical topology is shown. Murata Power Solutions recommends an external fuse.
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com/support
MDC_UWQ-12-17-Q48T-C.A01
Page 1 of 17
UWQ-12/17-Q48T-C Series
Wide Input, Isolated DOSA Quarter Brick
DC-DC Converters with Trim and Sense
ORDERING GUIDE
➀
Output
Input
Efficiency
Min.
90%
Typ.
Dimensions
(inches)
(mm)
R/N (mV
I
OUT
I
IN
full
pk-pk) Regulation (Max.)
➁
V
OUT
(Amps, Power
V
IN
Nom. Range
I
IN
no
load
(Volts) max.) (Watts) Typ. Max.
Line
Load
(Volts) (Volts) load (mA) (Amps)
12
17
204
100
120
±0.25%
±0.3%
48
18-75
80
4.62
Root Model
➀
UWQ-12/17-Q48T-C
➁
92%
2.30x1.45x0.46
max.
58.4x36.8x11.7
➀
Please refer to the part number structure for additional ordering information and options.
➁
All specifications are typical at nominal line voltage and full load, +25°C unless otherwise noted. See
detailed specifications. Output capacitors are 1 μF || 10 μF with a 22μF input capacitor. These caps are
necessary for our test equipment and may not be needed for your application.
PART NUMBER STRUCTURE
UWQ
-
12
/
17
-
Q48 N T
Family
Series:
Wide Input
Quarter Brick
Nominal Output Voltage
B 9 Lx
-
C
RoHS Hazardous Materials compliance
C
= RoHS-6 (does not claim EU RoHS exemption 7b–lead in solder), standard
Pin length option
Blank
= standard pin length 0.188 in. (4.78 mm)
L1
= 0.110 in. (2.79 mm)
*
L2
= 0.145 in. (3.68 mm)
*
Baseplate Connect Pin 9
(special order)
*
Blank
= No pin 9, standard
9
= Pin 9 installed, connects to baseplate
Baseplate Option
Blank
= No baseplate, standard
B
= Baseplate installed, optional
Trim & Sense
T
= Trim & Sense pins included
**
*
Special quantity order is required;
no sample quantities available.
Note:
Some model number combinations
may not be available. Please contact
Murata Power Solutions.
Maximum Rated Output :
Current in Amps
Input Voltage Range:
Q48 = 18-75 Volts (48V nominal)
On/Off Control Logic
N
= Negative logic
P
= Positive logic
required, please click here for the UWQ
http://www.murata-ps.com/data/power/uwq.pdf
series (UWQ-12/17-Q48) data sheet, or
contact Murata Power Solutions.
**
If Trim & Sense pins are not
UWQ Pin 9 Baseplate Connection
The UWQ module has an additional pin 9 on special order that connects to the baseplate but is
electrically isolated from the rest of the converter. Please refer to the mechanical drawings.
Pin 9 offers a positive method of controlling the electrical potential of the baseplate, indepen-
dent of the converter.
The baseplate may be ordered by adding a “B” to the model number tree and pin 9 will be pre-
installed by adding a “9.” The two options are separate. Please refer to the Ordering Guide. Do
not order pin 9 without the baseplate. Note that “pin 9” converters may be on limited forecast,
requiring minimum order quantities and scheduled deliveries.
UWQ-12/17-Q48NTBL1-C
Complete Model Number Example:
Negative On/Off logic, trim & sense included, baseplate installed, 0.110˝ pin length, RoHS-6 compliance
www.murata-ps.com/support
MDC_UWQ-12-17-Q48T-C.A01
Page 2 of 17
UWQ-12/17-Q48T-C Series
Wide Input, Isolated DOSA Quarter Brick
DC-DC Converters with Trim and Sense
FUNCTIONAL SPECIFICATIONS
ABSOLUTE MAXIMUM RATINGS
Input Voltage, Continuous
Input Voltage, Transient
Isolation Voltage
On/Off Remote Control
Output Power
Output Current
Conditions/Comments
➀
Full power operation
Operating or non-operating,
100 mS max. duration
Input to output
Power on or off, referred to -Vin
Minimum
18
Typical/Nominal
48
Maximum
80
100
Units
Vdc
Vdc
Vdc
Vdc
W
0
0
2250
13.5
210.12
Current-limited, no damage,
0
17
A
short-circuit protected
Storage Temperature Range
Vin = Zero (no power)
-55
125
°C
Absolute maximums are stress ratings. Exposure of devices to greater than any of these conditions may adversely affect long-term reliability. Proper operation under conditions other than those
listed in the Performance/Functional Specifications Table is not implied or recommended.
INPUT
Operating voltage range
Recommended External Fuse
Start-up threshold, measured at 50% load
Undervoltage shutdown, measured at 50% load
Overvoltage protection
Internal Filter Type
Input current
Full Load Conditions
Low Line
Inrush Transient
Short Circuit Input Current
No Load input current
Shut down mode input current
Reflected (back) ripple current
➁
Back Ripple Current, No Filtering
Back Ripple Current, with 22μf external
input capacitor
Conditions/Comments
➀ ➂
18
Fast blow
Rising input voltage
Falling input voltage
N/A
L-C
Vin = nominal
Vin = minimum
Vin = 48V.
Iout = minimum, unit=ON
Measured at input with specified filter
16.5
15
48
20
17.5
16
75
17.9
17
Vdc
A
Vdc
Vdc
4.52
12.06
0.05
50
80
5
15
500
300
4.76
12.69
0.1
100
150
6.5
25
525
400
A
A
A2-Sec.
mA
mA
mA
mA, RMS
mA-p-p
mA-p-p
%
Vdc
Vdc
Vdc
GENERAL and SAFETY
Efficiency
Isolation
Isolation Voltage, input to output
Isolation Voltage, input to baseplate
Isolation Voltage, output to baseplate
Insulation Safety Rating
Isolation Resistance
Isolation Capacitance
Safety (certified to the following
requirements)
Calculated MTBF
Vin=48V, full load
With or without baseplate
With baseplate
With baseplate
Basic
90
2250
1500
1500
100
1500
UL-60950-1, CSA-C22.2 No.60950-1,
IEC/EN60950-1, 2nd edition
Per Telcordia SR-332, issue 1, class 3, ground
fixed, Tambient=+25°C
250
Power On, to Vout regulation band,
100% resistive load
Remote ON to Vout Regulated
50-75-50% load step to 3% of Vout
same as above
Yes
TBC
275
60
60
220
±500
300
65
65
275
±700
Hours x 10
3
KHz
mS
mS
μSec
mV
92
MΩ
pF
DYNAMIC CHARACTERISTICS
Fixed Switching Frequency
Startup Time
Startup Time
Dynamic Load Response
Dynamic Load Peak Deviation
FEATURES and OPTIONS
Remote On/Off Control
➃
“N” suffix:
Negative Logic, ON state
Negative Logic, OFF state
Control Current
“P” suffix:
Positive Logic, ON state
Positive Logic, OFF state
Control Current
Base Plate
ON = Pin connected to -Vin or to external source
OFF = Pin open or connected to external voltage
source
Open collector/drain
ON = Pin open or connected to external voltage
source
OFF = Pin connected to -Vin or to external
voltage
Open collector/drain
"B" suffix
0
3.5
1
3.5
0
1
1
13.5
2
13.5
1
2
Vdc
Vdc
mA
V
V
mA
www.murata-ps.com/support
MDC_UWQ-12-17-Q48T-C.A01
Page 3 of 17
UWQ-12/17-Q48T-C Series
Wide Input, Isolated DOSA Quarter Brick
DC-DC Converters with Trim and Sense
FUNCTIONAL SPECIFICATIONS, (CONT.)
OUTPUT
Total Output Power
Voltage
Setting Accuracy, fixed output
Output Voltage Range
Overvoltage Protection
Current
Output Current Range
Minimum Load
Current Limit Inception
Short Circuit
Short Circuit Current
Short Circuit Duration
(remove short for recovery)
Short circuit protection method
Regulation
➄
Line Regulation
Load Regulation
Ripple and Noise
➅
Temperature Coefficient
Maximum Capacitive Loading
Remote Sense Compliance
Conditions/Comments
➀
Minimum
0.0
Typical/Nominal
204
12
Maximum
210
12.36
+10
15
17
21.5
6
Units
W
Vdc
% of Vnom.
Vdc
A
A
A
At 50% load, not user adjustable
User-adjustable
Via magnetic feedback
11.64
-10
0.0
No minimum load
97% of Vnom., cold condition
Hiccup technique, autorecovery within 1.25%
of Vout
Output shorted to -Vout, no damage.
Continuous operation
Hiccup technique-auto recovery
Vin=min. to max., Vout=nom., full load
Iout=min. to max., Vin=nom.
5 Hz- 20 MHz BW, Cout=1μF MLCC paralleled
with 10μF tantalum
At all outputs
Low ESR caps
Sense connected at load
17.5
17
19.5
5
±0.25
±0.3
100
0
0.02
5000
10
2.3x1.45x0.46
58.4x36.8x11.7
2.3x1.45x0.5
58.4x36.8x12.7
2.12
60.19
1.6
45.36
0.04 & 0.06
1.016 & 1.52
50
5
120
% of Vout
% of Vout
mV pk-pk
% of Vout./°C
μF
% of Vout
Inches
mm
Inches
mm
Ounces
Grams
Ounces
Grams
Inches
mm
μ-inches
μ-inches
MECHANICAL (Through Hole Models)
Outline Dimensions (open frame)
Outline Dimensions (with baseplate)
Weight
With baseplate
With baseplate
Without baseplate
Without baseplate
Through Hole Pin Diameter
Through Hole Pin Material
TH Pin Plating Metal and Thickness
Baseplate Material
Copper alloy
Nickel subplate
Gold overplate
Aluminum
See derating curves
With baseplate, no derating
Vin = Zero (no power)
Measured in center
External filter is required
Class B with external filter
RoHS-6
-40
-40
-55
115
ENVIRONMENTAL
Operating Ambient Temperature Range
Operating Case Temperature
Storage Temperature
Thermal Protection/Shutdown
Electromagnetic Interference
Conducted, EN55022/CISPR22
RoHS rating
85
110
125
130
°C
°C
°C
°C
125
Notes
➀
Unless otherwise noted, all specifications apply at Vin = nominal, nominal output voltage and full
output load. General conditions are near sea level altitude, no base plate installed and natural
convection airflow unless otherwise specified. All models are tested and specified with external
parallel 1 μF and 10 μF multi-layer output capacitors and a 22μf external input capacitor (see
Technical Notes). All capacitors are low-ESR types wired close to the converter. These capacitors
are necessary for our test equipment and may not be needed in the user’s application.
➁
Input (back) ripple current is tested and specified over 5 Hz to 20 MHz bandwidth. Input filtering is
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