UVQ Series
Low Profile, Isolated Quarter Brick
2.5–40 Amp DC/DC Converters
ORDERING GUIDE SUMMARY
Model
All Models
V
out
Range
1.2V to 48V
I
out
Range
2.5A to 40A
V
in
Range
18-36V or 36-75V
Efficiency
Up to 92.%, model dependent
INPUT CHARACTERISTICS
Parameter
Voltage Range
Current, full power
Isolation
Typical unit
Typ. @ 25°C, full load
18-36 or 36-75 Volts
Up to 5.6 Amps
2kVdc to 2250V
Switch or FET control
Notes
24V or 48V nominal
Model dependent
Model dependent
Positive or negative logic
Remote On/Off Control
OUTPUT CHARACTERISTICS
Parameter
Voltage
Current
Accuracy
Ripple & Noise (to 20MHz)
Line and Load Regulation
Overcurrent Protection
Overtemperature Protection
Efficiency (minimum)
GENERAL SPECIFICATIONS
Parameter
Dynamic Load Response
Operating Temperature Range
Safety
MECHANICAL CHARACTERISTICS
With baseplate
Without baseplate
FEATURES
■
■
■
■
■
■
■
■
■
■
■
■
Standard quarter-brick package/pinout
Outputs from 1.5 to 48V up to 125W
Low profile 0.42" height
24 and 48Vdc nominal inputs
Fully isolated, 2250Vdc (BASIC) insulation
Designed for RoHS compliance
Output overvoltage/short-circuit protected
On/Off control, trim and sense functions
High efficiency to 92%
Protected against temp. and voltage limits
UL/IEC/EN60950-1 safety approvals
Qual/HALT/EMI tested
Typ. @ 25°C, full load
1.5 to 48 Volts ±10%
2.5 to 40 Amps fullscale
Down to 1% of V
NOM
Down to 35mVp-p
Down to ±0.125%/±0.25%
150% of I
OUT
max.
+125°C
See Performance Specifications
Notes
Trimmable
No minimum load
Most models
Model dependent
Model dependent
With hiccup auto-restart
Typ. @ 25°C, full load
Down to 50μsec
–40 to +110°C
UL/IEC/EN 60950-1
Notes
Model dependent
With baseplate, see derating curve
and CSA C22.2-No.234
1.45 x 2.30 x 0.5 inches (36.83 x 58.42 x 12.7 mm)
1.45 x 2.30 x 0.42 inches (36.83 x 58.42 x 10.67 mm)
See Performance Specifications, page 2
PRODUCT OVERVIEW
For efficient, 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 airflow) at full-rated power. The
optional mounting baseplate extends this to all
practical temperature ranges at full power.
UVQ’s achieve these impressive specifications
while delivering excellent electrical performance.
Overall noise is 35mVp-p (3.3V models) with fast
step response (down to 50µsec). These converters
offer high stability even with no load and tight out-
put regulation. The unit is fully protected against
input over and undervoltage, output overcur-
rent 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 resistors
for output voltage calibration closer than the
standard accuracy.
UVQ’s include industry-standard safety certi-
fications and BASIC I/O insulation provides 2250
Volt input/output isolation. Radiation emission
testing is performed to widely-accepted EMC
standards. Contact MPS for details on HALT quali-
fication testing. The UVQ’s may be considered as
higher performance replacements for some MPS
USQ models.
Pb
Lead-free
construction/attach
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com
Technical enquiries
email: sales@murata-ps.com, tel:
+1 508 339 3000
MDC_UVQ Models.B04
Page 1 of 25
UVQ Series
Low Profile, Isolated Quarter Brick
2.5–40 Amp DC/DC Converters
Performance Specifications and Ordering Guide
➀
ORDERING GUIDE
Output
V
out
(Volts)
1.2
1.5
1.5
1.8
2.5
3.3
5
12
15
18
24
48
I
out
Power
(Amps) (Watts)
40
40
40
40
35
30
20
8
10
7
5.6
6
4.5
2.5
48
60
60
72
87.5
35
99
100
96
120
105
100.8
108
30
20
95
110
85
120
125
125
60
75
100
250
R/N (mVp-p)
➁
Typ.
TBD
30
TBD
TBD
Max.
TBD
60
TBD
TBD
60
60
65
40
50
25
130
160
150
150
185
185
100
130
200
375
Regulation (Max.)
➂
Line
TBD
±0.075%
TBD
TBD
±0.05%
±0.05%
±0.1%
±0.05%
±0.05%
±0.05%
±0.1%
±0.75%
±0.05%
±0.05%
±0.05%
±0.05%
±0.075%
±0.075%
±0.1%
±0.175%
Load
TBD
±0.05%
TBD
TBD
±0.05%
±0.05%
±0.25%
±0.25%
±0.05%
±0.05%
±0.1%
±0.05%
±0.05%
±0.02%
±0.075%
±0.075%
±0.15%
±0.25%
±0.2%
±0.2%
V
in
Nom.
(Volts)
48
24
48
48
24
48
24
48
24
48
24
48
24
48
24
48
24
48
24
48
Input
Range I
in
,
No Load I
in
,
Full Load
(Volts)
(mA)
(Amps)
36-75
18-36
36-75
36-75
18-36
36-75
18-36
36-75
18-36
36-75
18-36
36-75
18-36
36-75
18-36
36-75
18-36
36-75
18-36
36-75
TBD
80
TBD
TBD
100
100
180
130
180
80
90
60
103
60
140
80
45
45
45
30
TBD
2.84
TBD
TBD
4.14
2.37
4.58
2.7
4.53
2.31
4.4
2.78
4.85
2.39
4.69
2.5
5.03
2.49
4.4
2.71
Efficiency)
Min.
TBD
86.5%
TBD
TBD
86%
87%
88.5%
87%
91%
88.5%
89%
88.5%
88.5%
90%
88%
88.3%
88%
89%
89%
91%
Typ.
TBD
88%
TBD
TBD
88%
88%
90%
89%
92%
90%
91%
90%
90.3%
91.5%
89.5%
90%
89.5%
90.5%
91%
92.3%
Package
(Case,
Pinout)
C59, P32
C59, P32
C59, P32
C59, P32
Root Models
UVQ-1.2/40-D48
UVQ-1.5/40-D24
UVQ-1.5/40-D48
UVQ-1.8/40-D48
UVQ-2.5/35-D24
UVQ-2.5/40-D48
UVQ-3.3/30-D24
UVQ-3.3/35-D48
UVQ-5/20-D24
UVQ-5/20-D48
UVQ-12/8-D24
UVQ-12/10-D48
UVQ-15/7-D24
UVQ-15/7-D48
UVQ-18/5.6-D24
UVQ-18/6-D48
UVQ-24/4.5-D24
UVQ-24/4.5-D48
UVQ-48/2.5-D24
UVQ-48/2.5-D48
C59, P32
120
These are partial model numbers. Please refer to the full model number struc-
ture for complete ordering part numbers.
Min. I
out
= 3 Amps.
All specifications are at nominal line voltage and full load, +25°C unless other-
wise noted. See detailed specifications.
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.
I
out
= 14 Amps max. with V
in
= 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.
www.murata-ps.com
Technical enquiries
email: sales@murata-ps.com, tel:
+1 508 339 3000
MDC_UVQ Models.B04
Page 2 of 25
UVQ Series
Low Profile, Isolated Quarter Brick
2.5–40 Amp DC/DC Converters
PART NUMBER STRUCTURE
U VQ
-
3.3
/
20
-
D48 N B 9 LX
-
C
Output Configuration
U = Unipolar/Single
RoHS-6 compliant *
Alternate Pin Length:
Quarter-Brick Package
Nominal Output Voltage
1.2 to 48 Volts
L1
= 0.110 (2.79mm)
L2
=
0.145 (3.68mm)
Blank =
Standard pin length
Baseplate Pin 9, see Mechanical Drawings:
(special order)
9
= Pin 9 installed (see description on pg. 2)
Blank =
No pin 9
Maximum Rated Output
Current in Amps
Input Voltage Range:
D24 = 18-36 Volts (24V nominal)
D48 = 36-75 Volts (48V nominal)
B =
Baseplate installed
Blank =
No baseplate
Remote On/Off Control Polarity:
Add "P" for positive polarity
Add "N" for negative polarity
* Note:
Not all model number combinations are available.
Contact Murata Power Solutions. (DATEL).
+SENSE
(7)
+V
IN
(3)
+V
OUT
(8)
Baseplate
(9)
Optional
SWITCH
CONTROL
–V
OUT
(4)
–V
IN
(1)
–SENSE
(5)
PWM
CONTROLLER
OPTO
ISOLATION
REFERENCE &
ERROR AMP
V
OUT
TRIM
(6)
REMOTE
ON/OFF
CONTROL*
(2)
INPUT UNDERVOLTAGE, INPUT
OVERVOLTAGE, AND OUTPUT
OVERVOLTAGE COMPARATORS
* Can be ordered with positive (standard) or negative (optional) polarity.
Typical configuration — some models use a different topology
Figure 1. Simplified Schematic
www.murata-ps.com
Technical enquiries
email: sales@murata-ps.com, tel:
+1 508 339 3000
MDC_UVQ Models.B04
Page 3 of 25
UVQ Series
Low Profile, Isolated Quarter Brick
2.5–40 Amp DC/DC Converters
Performance/Functional Specifications 24V Models
UVQ-1.5/40-D24
UVQ-2.5/35-D24
Typical @ T
a
= +25°C under nominal line voltage, nominal output voltage, natural air convection, external caps and full-load conditions, unless noted. (1)
UVQ-3.3/30-D24
UVQ-18/5.6-D24
UVQ-24/4.5-D24
Input
Input voltage range
Start-up threshold, (V) min.
Undervoltage
shutdown, (V)
14
Overvoltage shutdown (V)
Reflected (back) ripple
current
2
Input Current
Full load conditions
Inrush transient, (A
2
sec)
Output short circuit, (mA)
No load, mA
Low line (V
in
= min.),
(Amps)
Standby mode,
(Off, UV, OT shutdown)
Internal input filter type
Reverse polarity
protection
Remote On/Off Control
5
Positive logic, "P" suffix
(specifications are max)
Negative logic, "N" suffix
(specifications are max)
Current
OFF = Ground pin to +0.8V
ON = Open or +5V to +V
in
max.
OFF = Open or +5V to +V
in
max
ON = Ground pin to+0.8V max
1-8 mA, model dependent
L-C
See notes.
0.5
40
80
3.79
100
5.49
0.5
0.05
50
180
6.04
160
5.57
0.5
See ordering guide.
0.1
10
90
5.93
1
320
103
6.52
1
50
140
6.29
0.05
50
45
6.67
0.05
50
30
3.60
17
17
16
none
17
17
See ordering guide
17
16.25
17
16
39
10-50 mA pk-pk, model dependent
17
16.25
17
16
none
17
16
1-4mA, model dependent
Pi-type
L-C
www.murata-ps.com
Technical enquiries
email: sales@murata-ps.com, tel:
+1 508 339 3000
MDC_UVQ Models.B04
Page 4 of 25
UVQ-48/2.5-D24
UVQ-5/20-D24
UVQ-12/8-D24
UVQ-15/7-D24
UVQ Series
Low Profile, Isolated Quarter Brick
2.5–40 Amp DC/DC Converters
Performance/Functional Specifications 24V Models
UVQ-1.5/40-D24
UVQ-2.5/35-D24
Typical @ T
a
= +25°C under nominal line voltage, nominal output voltage, natural air convection, external caps and full-load conditions, unless noted. (1)
UVQ-3.3/30-D24
UVQ-18/5.6-D24
UVQ-24/4.5-D24
Output
Voltage output range
Voltage output accuracy
(50% load)
Adjustment range
Temperature coefficient
Minimum loading
Remote sense
compensation
Ripple/noise
Line/Load regulation
Efficiency
Maximum capacitive
loading, Low ESR
<0.02Ω max.,
resistive load, (μF)
Current limit inception
(98% of V
out
, after
warmup), (Amps)
Short circuit protection
method
Short circuit current,
(Amps)
Short circuit duration
Overvoltage protection, (via
magnetic feedback)
Isolation Characteristics
Isolation Voltage
Input to Output, (Volts min)
Input to baseplate
Baseplate to output,
(Volts min)
Isolation resistance
Isolation capacitance, (pF)
Isolation safety rating
1500
1500
1000
100 MΩ
1000
Basic insulation
2000
50
2000
1500
1500
2.3 Volts
3 Volts max
3.6
3
45
10,000
5000
No minimum load
3 amps
+10%.
See ordering guide.
See ordering guide.
See ordering guide.
4700
2200
±1.5% of V
nom
See ordering guide.
±1.25% of V
nom
–20 to +10% of V
nom
.
±0.02% of V
out
range per °C
No minimum load
±1% of V
nom
±10% of V
nom
.
44
36
24
10
9.5
7
5.8
Current limiting, hiccup autorestart. Remove overload for recovery.
3
3
1.5
14.4 Volts
max
15 mA
3
5
2.8
Output may be shorted continuously to ground (no damage).
6.8 Volts max
3.96 Volts max 22 Volts max 29 Volts max 59 Volts max
www.murata-ps.com
Technical enquiries
email: sales@murata-ps.com, tel:
+1 508 339 3000
MDC_UVQ Models.B04
Page 5 of 25
UVQ-48/2.5-D24
3.4
UVQ-5/20-D24
UVQ-12/8-D24
UVQ-15/7-D24
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