FEATURES
■ Standard quarter-brick package/pinout
■ Outputs from 1.5 to 48V up to 125W
■ Low profi le 0.42" height
■ 24 and 48Vdc nominal inputs
■ Fully isolated, 2250Vdc (BASIC) insulation
■ Designed for RoHS-6 compliance
■ Output overvoltage/short-circuit protected
■ On/Off control, trim and sense functions
■ High effi ciency to 92%
■ Protected against temp. and voltage limits
■ Designed to meet UL/IEC/EN60950-1 safety
approvals
Typical unit
For effi cient, fully isolated DC power in the small-
est space, Murata Power Solutions' UVQ series
quarter bricks offer output voltages from 1.5
to 48 Volts with currents up to 40 Amps. UVQs
operate over a wide temperature range (up to
+70°C at 200 lfm airfl ow) at full-rated power. The
optional mounting baseplate extends this to all
practical temperature ranges at full power.
UVQ’s achieve these impressive specifi cations
while delivering excellent electrical performance.
Overall noise is 35mVp-p (3.3V models) with fast
step response (down to 50µsec). These convert-
ers offer high stability even with no load and
tight output regulation. The unit is fully protected
against input over and undervoltage, output over-
current and short circuit. An on-board temperature
sensor shuts down the converter if thermal limits
are reached. Protection uses the “hiccup” (auto
restart) method.
A convenient remote On/Off control input oper-
ates by external digital logic, relay or transistor
input. To compensate for longer wiring and to
retain output voltage accuracy at the load, UVQ’s
include a Sense input to dynamically correct for
ohmic losses. A trim input may be connected to a
user’s adjustment potentiometer or trim resis-
tors for output voltage calibration closer than the
standard accuracy.
UVQ’s include industry-standard safety
certifi cations and BASIC I/O insulation provides
2250 Volt input/output isolation. Radiation emis-
sion testing is performed to widely-accepted
EMC standards. The UVQ’s may be considered
as higher performance replacements for some
Murata Power Solutions USQ models.
PRODUCT OVERVIEW
–V
IN
(1)
+V
IN
(3)
OPTO
ISOLATION
PWM
CONTROLLER
REFERENCE &
ERROR AMP
INPUT UNDERVOLTAGE, INPUT
OVERVOLTAGE, AND OUTPUT
OVERVOLTAGE COMPARATORS * Can be ordered with positive (standard) or negative (optional) polarity.
REMOTE
ON/OFF
CONTROL*
(2)
+SENSE
(7)
–SENSE
(5)
+V
OUT
(8)
V
OUT
TRIM
(6)
–V
OUT
(4)
SWITCH
CONTROL
Baseplate
(9)
Optional
Figure 1. Simplifi ed Schematic
Typical confi guration — some models use a different topology
Contents of full data sheet Page
Description, Photograph, Connection Diagram 1
Performance Specs and Ordering Guide, Pin 9 Option 2
Model Numbering, Ordering Guide Summary 3
Mechanical Specs, Input/Output Pinout 4
Detailed Electrical Specifi cations 5
Technical Notes 11
Soldering Guidelines 13
Performance Data 17
18 Sep 2009 MDC_UVQ Models.B15_short Page 1 of 4
This data sheet contains core information only. Please click here for the full data sheet.
UVQ Series
Low Profi le, Isolated Quarter Brick
2.5–40 Amp DC/DC Converters
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com
www.murata-ps.com
email: sales@murata-ps.com
c These are partial model numbers. Please refer to the full model number struc-
ture for complete ordering part numbers.
d Min. IOUT = 3 Amps for UVQ-3.3 Vout models.
e All specifi cations are at nominal line voltage and full load, +25°C unless other-
wise noted. See detailed specifi cations.
Output capacitors are 1uF ceramic || 10 uF electrolytic. Input cap is 22 uF, low
ESR, except UVQ-24/4.5 is 33uF and UVQ-48/2.5 uses no input cap. I/O caps are
necessary for our test equipment and may not be needed for your application.
f IOUT = 14 Amps max. with VIN = 18-19.5 Volts.
UVQ Pin 9 Baseplate Connection
The UVQ series may include an optional installed baseplate for extended
thermal management. Various UVQ models (see list below) are also available
with an additional pin 9 on special order which connects to the baseplate but is
electrically isolated from the rest of the converter. Please refer to the mechani-
cal drawings.
Pin 9 offers a positive method of controlling the electrical potential of the
baseplate, independent of the converter. Some baseplate models cannot
include pin 9 and in such cases, the baseplate is grounded by the mounting
bolts. Or consider adding an external lugged washer with a grounding terminal.
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.
Models available with Pin 9:
UVQ-12/10-D48
UVQ-1.5/40-D24
Models which are NOT available with Pin 9:
UVQ-5/20-D24 and –D48
UVQ-3.3/30-D24
UVQ-3.3/35-D48
UVQ-2.5/35-D24
UVQ-2.5/40-D48
Other models which are not listed will be reviewed for future pin 9 accomo-
dation.
ORDERING GUIDE
Root Models
Output Input
Effi ciency) Package
(Case,
Pinout)
VOUT
(Volts)
IOUT
(Amps)
Power
(Watts)
R/N (mVp-p) Regulation (Max.) ➂VIN Nom.
(Volts)
Range
(Volts)
IIN, No Load
(mA)
IIN, Full Load
(Amps)Typ. Max. Line Load Min. Typ.
UVQ-1.5/40-D24P-C 1.5 40 60 30 60 ±0.075% ±0.05% 24 18-36 80 2.84 86.5% 88%
C59, P32
UVQ-2.5/35-D24P-C 2.5 35 87.5
35
60 ±0.05% ±0.05% 24 18-36 100 4.14 86% 88%
UVQ-2.5/40-D48N-C 40 100 60 ±0.05% ±0.05% 48 36-75 100 2.37 87% 88%
UVQ-3.3/30-D24P-C ➁3.3 30 99 65 ±0.1% ±0.25% 24 18-36 180 4.58 88.5% 90%
UVQ-3.3/35-D48N-C ➁35 115.5 40 ±0.05% ±0.25% 48 36-75 130 2.7 87% 89%
UVQ-5/20-D24P-C 5 20 100 30 50 ±0.05% ±0.05% 24 18-36 180 4.53 91% 92%
UVQ-5/20-D48N-C 20 25 ±0.05% ±0.05% 48 36-75 80 2.31 88.5% 90%
UVQ-12/8-D24P-C 12 8 96 95 130 ±0.1% ±0.1% 24 18-36 90 4.4 89% 91%
UVQ-12/10-D48N-C 10 120 110 160 ±0.075% ±0.05% 48 36-75 60 2.78 88.5% 90%
UVQ-15/7-D24P-C 15 7 105 85 150 ±0.05% ±0.05% 24 18-36 103 4.85 88.5% 90.3%
UVQ-15/7-D48N-C 120 150 ±0.05% ±0.02% 48 36-75 60 2.39 90% 91.5%
UVQ-18/5.6-D24P-C 18 5.6 100.8 125 185 ±0.05% ±0.075% 24 18-36 140 4.69 88% 89.5%
UVQ-18/6-D48N-C 6
108
125 185 ±0.05% ±0.075% 48 36-75 80 2.5 88.3% 90%
UVQ-24/4.5-D24P-C 24 4.5 60 100 ±0.075% ±0.15% 24 18-36 45 5.03 88% 89.5%
UVQ-24/4.5-D48N-C 75 130 ±0.075% ±0.25% 48 36-75 45 2.49 89% 90.5%
UVQ-48/2.5-D24P-C 48 2.5 120 100 200 ±0.1% ±0.2% 24 18-36 45 4.4 89% 91%
UVQ-48/2.5-D48N-C 250 375 ±0.175% ±0.2% 48 36-75 30 2.71 91% 92.3%
Performance Specifi cations and Ordering Guide ➀
18 Sep 2009 MDC_UVQ Models.B15_short Page 2 of 4
This data sheet contains core information only. Please click here for the full data sheet.
UVQ Series
Low Profi le, Isolated Quarter Brick
2.5–40 Amp DC/DC Converters
www.murata-ps.com email: sales@murata-ps.com
PART NUMBER STRUCTURE
U VQ 3.3 20 D48
-/-
Quarter-Brick Package
Output Confi guration
U = Unipolar/Single
Nominal Output Voltage
1.2 to 48 Volts
Maximum Rated Output
Current in Amps Blank = No baseplate, standard
B = Baseplate installed, optional special order
Baseplate Pin 9, see Mechanical Drawings: (special order)
Blank = No pin 9, standard
9 = Pin 9 installed (see description on pg. 2), optional
Alternate Pin Length:
Blank = Standard pin length
L1 = 0.110 (2.79mm)
L2 = 0.145 (3.68mm)
Input Voltage Range:
D24 = 18-36 Volts (24V nominal)
D48 = 36-75 Volts (48V nominal)
* Note:
Some model number combinations may not be
available. Contact Murata Power Solutions.
Remote On/Off Control Polarity:
Add "P" for positive polarity
Add "N" for negative polarity
Positive "P" polarity is standard for D24 models and
optional special order for D48 models. Negative "N"
polarity is standard for D48 models and optional special
order for D24 models.
B LX9
N-C
RoHS-6 hazardous substance compliant
(does not claim EU RoHS exemption 7b–lead in solder)
(special quantity order)
ORDERING GUIDE SUMMARY
Model VOUT Range IOUT Range VIN Range Effi ciency
All Models 1.2V to 48V 2.5A to 40A 18-36V or 36-75V Up to 92.%, model dependent
INPUT CHARACTERISTICS
Parameter Typ. @ 25°C, full load Notes
Voltage Range 18-36 or 36-75 Volts 24V or 48V nominal
Current, full power Up to 5.6 Amps Model dependent
Isolation 2kVdc to 2250V Model dependent
Remote On/Off Control Switch or FET control Positive or negative logic
OUTPUT CHARACTERISTICS
Parameter Typ. @ 25°C, full load Notes
Voltage 1.5 to 48 Volts ±10% Trimmable
Current 2.5 to 40 Amps fullscale No minimum load
Accuracy Down to 1% of VNOM Most models
Ripple & Noise (to 20MHz) Down to 35mVp-p Model dependent
Line and Load Regulation Down to ±0.125%/±0.25% Model dependent
Overcurrent Protection 150% of IOUT max. With hiccup auto-restart
Overtemperature Protection +125°C
Effi ciency (minimum) See Performance Specifi cations
GENERAL SPECIFICATIONS
Parameter Typ. @ 25°C, full load Notes
Dynamic Load Response Down to 50sec Model dependent
Operating Temperature Range –40 to +110°C With baseplate, see derating curve
Safety UL/IEC/EN 60950-1 and CSA C22.2-No.234
MECHANICAL CHARACTERISTICS
With baseplate 1.45 x 2.30 x 0.5 inches (36.83 x 58.42 x 12.7 mm)
Without baseplate 1.45 x 2.30 x 0.42 inches (36.83 x 58.42 x 10.67 mm)
See Performance Specifi cations, page 2
18 Sep 2009 MDC_UVQ Models.B15_short Page 3 of 4
This data sheet contains core information only. Please click here for the full data sheet.
UVQ Series
Low Profi le, Isolated Quarter Brick
2.5–40 Amp DC/DC Converters
www.murata-ps.com email: sales@murata-ps.com
2.30 (58.4)
2.00 (50.8) A
A
PINS 1-3, 5-7: 0.040 ±0.001 (1.016 ±0.025)
PINS 4 & 8: 0.060 ±0.001 (1.52 ±0.025)
0.42
(10.7)
0.188
(4.78)
1.45
(36.8)
B
0.600
(15.24)
4 EQ. SP.
@ 0.150
(3.81)
B
BOTTOM VIEW
8
7
6
5
4
3
2
1
2.30 (58.4)
2.00 (50.8)
0.15 (3.81)
A
1.860 (47.2) A
A
PINS 1-3, 5-7: 0.040 ±0.001 (1.016 ±0.025)
PINS 4 & 8: 0.060 ±0.001 (1.52 ±0.025)
#M3-THREAD X 0.15 DEEP
TYPICAL (4) PLACES
BASEPLATE
0.50
(12.7)
0.188
(4.8)
1.45
(36.8)
1.030
(26.2)
B
0.600 (15.24)
4 EQ. SP.
@ 0.150 (3.81)
B B
BOTTOM VIEW
Optional pin 9 connects
to baseplate. Electrically
isolated from converter.
8
7
6
5
4
3
2
1
9
Alternate pin lengths are available. Contact Murata Power Solutions.
Optional baseplate pin
is special order.
Contact Murata Power Solutions..
Important: If sense inputs
are not connected to a
remote load, connect them
to their respective VOUT pins
at the converter.
I/O CONNECTIONS
Pin Function P32
1 –Input
2 On/Off Control
3 +Input
4 –Output
5 –Sense
6Output Trim
7 +Sense
8 +Output
Case C59 Case C59 with Baseplate
Third Angle Projection
Dimensions are in inches (mm) shown for ref. only.
Components are shown for reference only.
Tolerances (unless otherwise specified):
.XX ± 0.02 (0.5)
.XXX ± 0.010 (0.25)
Angles ± 2˚
18 Sep 2009 MDC_UVQ Models.B15_short Page 4 of 4
This data sheet contains core information only. Please click here for the full data sheet.
UVQ Series
Low Profi le, Isolated Quarter Brick
2.5–40 Amp DC/DC Converters
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. Specifi cations are subject to change without
notice. © 2009 Murata Power Solutions, Inc.
www.murata-ps.com/locations email: sales@murata-ps.com
Murata Power Solutions, Inc.
11 Cabot Boulevard, Mansfi eld, MA 02048-1151 U.S.A.
ISO 9001 and 14001 REGISTERED
