For applications requiring improved electrical and
thermal performance at reduced cost, consider
DATEL’s new UCQ series “quarter brick” DC/DC
power converters. These compact units measure
just .45" x 2.3" x 0.4" (36.8 x 60.9 x 0.2 mm)
and fit the industry-standard footprint.
Available outputs range between .2V @ 40 Amps
to 5V @ 6.7 Amps and accept a wide input range.
The UCQ’s interleaved, synchronous-rectifier
topology offers high efficiency (up to 93%), tight
line and load regulation, low noise and fast step
response. A single-board optimized open-frame
design contributes to impressive thermal opera-
tion. UCQ’s will operate up to +70°C and 00 LFM
airflow with no derating.
The UCQ’s feature full isolation to 2250Vdc
meeting BASIC insulation requirements of
UL/EN/IEC 60950-. Input filters reduce propa-
gated switching noise back to input sources. Also
included is a remote On/Off switch control (with
positive or negative polarity), output trim adjustable
over nominal and output sense functions to reduce
power lead losses. Extensive protection items
avoid damage from out of limit voltages, currents
and temperatures. Protection faults automatically
recover using the hiccup technique. Besides safety
testing to 60950-, certifications for the UCQ
include application for EMC compliance (to FCC
class B), qualification testing (including HALT) and
CE marking.
+SENSE
(7)
+V
IN
(3)
+V
OUT
(8)
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 topology may vary between units.
Figure 1. Simplified Schematic
www.murata-ps.com
Technical enquiries
email: sales@murata-ps.com, tel:
+ 508 339 3000
MDC_UCQ Models.B02 Page of 7
Single Output UCQ Models
PRELIMINARY
Performance Specifications and Ordering Guide
➀
ORDERING GUIDE
Output
R/N (mVp-p)
Root Models
➀
UCQ-1.2/40-D24
UCQ-1.2/30-D48
UCQ-1.5/25-D48
UCQ-1.8/30-D48
UCQ-2.5/40-D24
UCQ-2.5/30-D48
UCQ-3.3/35-D24
UCQ-3.3/20-D48
UCQ-3.3/30-D48
UCQ-5/20-D24
UCQ-5/20-D48
UCQ-8/12-D24
UCQ-12/8.3-D48
UCQ-15/6.7-D24
V
out
I
out
Power
(Volts) (Amps) (Watts)
Typ.
Max.
Regulation (Max.)
➁
Line
Load
V
in
Nom.
(Volts)
Range
(Volts)
I
in
no
load (mA)
Input
I
in
full
load
(Amps)
Efficiency
Min.
Typ.
Low-Profile, Quarter Brick, 6.7-40 Amp
Isolated DC/DC Converters
.2
.2
.5
.8
2.5
2.5
3.3
3.3
3.3
5
5
8
2
5
40
30
25
30
40
30
35
20
30
20
20
2
8.3
6.7
48
36
37.5
54
00
75
5.5
66
99
00
00
96
99.6
00.5
TBD
50
50
00
80
50
30
50
50
50
35
TBD
00
TBD
TBD
00
80
TBD
20
00
50
80
80
60
55
TBD
50
50
TBD
±0.25%
±0.25%
±0.25%
±0.25%
±0.2%
±0.25%
±0.25%
±0.2%
±0.25%
±0.25%
±0.25%
±0.2%
±0.25%
TBD
±0.25%
±0.25%
±0.25%
±0.25%
±0.25%
±0.25%
±0.25%
±0.25%
±0.25%
±0.25%
±0.25%
±0.25%
±0.25%
24
48
48
48
24
48
24
48
48
24
48
24
48
24
8-36
36-75
36-75
36-75
8-36
36-75
8-36
36-75
36-75
8-36
36-75
8-36
36-75
8-36
TBD
30
50
45
20
50
30
50
50
60
80
TBD
80
00
TBD
0.90
0.94
.3
4.96
.80
5.4
.53
2.3
4.55
2.24
TBD
2.28
4.6
83%
8%
8%
83%
82%
85%
87%
88.5%
90%
88%
89%
88%
90%
9%
85%
83%
83%
86%
84%
87%
89%
90%
9%
9.5%
93%
9.5%
9%
92%
➀
These are partial model numbers. Please refer to the part number structure for complete ordering part numbers.
➁
All specifications are at nominal line voltage and full load, +25 deg.C unless otherwise noted. See detailed specifications. Output capacitors are µF ceramic || 0 µF electrolytic. I/O caps are necessary for
our test equipment and may not be needed for your application.
Outline dimensions:
2.3 × .45 × 0.39 inches
58.4 × 36.8 × 9.9 mm
Pinout: P32
(all models)
www.murata-ps.com
Technical enquiries
email: sales@murata-ps.com, tel:
+ 508 339 3000
MDC_UCQ Models.B02 Page 2 of 7
Single Output UCQ Models
PRELIMINARY
PART NUMBER STRUCTURE
Low-Profile, Quarter Brick, 6.7-40 Amp
Isolated DC/DC Converters
Output
Configuration:
Unipolar,
singular output
U CQ
-
3.3
/
35
-
D48 N B
H
-
C
RoHS Hazardous Materials
compliance
C
= RoHS-6 (no lead)
Y
= RoHS-5 (with lead)
Conformal coating
H
= Humiseal added (quantity order)
Blank
= no coating
Baseplate
B
=
Baseplate installed
Blank
=
No baseplate
On/Off Control Polarity
P
=
Positive polarity
N
=
Negative polarity
Quarter-Brick Package
Nominal Output Voltage
Maximum Rated Output :
Current in Amps
Input Voltage Range:
D24 = 18-36 Volts (24V nominal)
D48 = 36-75 Volts (48V nominal)
Note:
Note all model combinations
are available. Contact MPS.
MECHANICAL SPECIFICATIONS
UCQ with Optional Baseplate
Case C67
All dimensions are in inches (mm)
I/O Connections
Pin
2
3
4
Function P32
−Input
Remote On/Off*
+Input
−Output
Pin
5
6
7
8
Function P32
−Sense
Output Trim
+Sense
+Output
Component locations may vary between units.
* The Remote On/Off can be provided with either
positive (no suffix) or negative (“N” suffix) polarity.
