LAST TIME BUY: AUGUST 31, 2014. CLICK HERE FOR OBSOLESCENCE NOTICE OF FEBRUARY 2014.
www.murata-ps.com
Single Output UCH Models
Isolated, “Half-Brick”
1.8−15V Output DC/DC Converters
PROD
PRODUCT OVERVIEW
high
cien
cy,
The
hig
h
effi
ciency, low noise and long-term reli-
n
nois
e
s
that
ability
t
hat
defines Murata Power Solutions’ DC/
P
ower
Converters now
to
DC
C
on
verters
n
ow
comes
t
o you
in the standard
“half-brick”
configuration
(2
.3˝
x
2
x 0.40˝).
(2.3˝ 2.4˝
“half-br
rick”
2
Series
Our
new
UCH
Se
ries
is
certifi
ed to UL/EN60950-
w
e
fi
o
safety requirements
1
sa
fety
requirem
ents
(some
mod
pending),
a
y
m
e
models
d
including
European country’s
inclu
din
each
E
uropean
cou
ntry’
deviations. All
u
ng
u
BASIC insulation;
mod
els
models
have
BA
SIC
insulatio
n;
guarantee 2250Vdc
d
A
o
out)
(in to ou isolation; and because they are designed
Class
with Cla B thermal insulation, satisfy all safety
requirements over their full operating tempera-
tures. Construction/attach meets stringent RoHS-6
specifications.
UCH Models are designed for demanding tele-
com, datacom and networking applications. Their
“semi-synchronous-rectifier” design achieves
impressive efficiencies. Output voltages are
1.8 to 15 Volts. The input voltage range is 36 to 75
or 18 to 36 Volts. All models meet the Low Voltage
Directive (LVD).
For high reliability and affordability, Murata
Power Solutions utilizes high-speed automatic
assembly to construct the UCH’s proven SMT-
on-pcb designs. An optional baseplate offers full
output power at maximum temperature.
UCH’s feature input filters, input undervoltage
and overvoltage lockout, output current limiting,
short-circuit protection, and thermal shutdown.
Additionally, all devices have output trim capability
and an on/off control pin that can be ordered with
either logic type.
Typical Unit
ypical
t
NOT RECOMMENDED
FOR NEW DESIGNS
FEATURES
Standard “half-brick” configuration
ed to UL-60950-1, CSA-C22.2 No.
Certifi
60950-1, IEC\EN 60950-1, 2nd edition
(some models pending)
isolated, 2250Vdc guaranteed
Fully
Output voltages: 1.8 – 15 Volts
range: 36-75V or 18-36V
V
IN
50-150 Watt output power
Full
Reliable SMT-on-pcb construction
Input under and output overvoltage shutdown
Output current limiting and short-circuit
protection
On/off, V
OUT
trim and sense functions
cations and customs for OEMs
Modifi
RoHS-6 construction/attach
+V
IN
(4)
+SENSE
(6)
+V
OUT
(5)
CASE
(2)
SWITCH
CONTROL
–V
OUT
(9)
–V
IN
(1)
PMW
CONTROLLER
INPUT UNDERVOLTAGE, INPUT
OVERVOLTAGE, AND OUTPUT
OVERVOLTAGE COMPARATORS
OPTO
ISOLATION
REFERENCE &
ERROR MAP
–SENSE
(8)
V
OUT
TRIM
(7)
Typical topology is shown.
*Can be ordered with positive (standard)
or negative (optional) polarity.
REMOTE*
ON/OFF
CONTROL
(3)
Figure 1. Simplified Schematic
For full details go to
www.murata-ps.com/rohs
REG.-Nr. C457
(some models pending
certification)
www.murata-ps.com/support
MDC_UCH Models.C01
Page 1 of 18
Single Output UCH Models
Isolated, “Half-Brick”
1.8−15V Output DC/DC Converters
PERFORMANCE SPECIFICATIONS SUMMARY AND ORDERING GUIDE
➀
Output
R/N (mVp-p)
➁
Root Family
➀
OBSOLETE
UCH-1.8/40-D48N-C
OBSOLETE
UCH-2.5/40-D48N-C
OBSOLETE
UCH-3.3/10-D24P-C
OBSOLETE
UCH-3.3/10-D48N-C
Input
Regulation (Max.)
Line
±0.125%
±0.1%
±0.2%
±0.2%
±0.125%
±0.125%
±0.125%
±0.125%
±0.125%
±0.125%
±0.125%
±0.125%
Load
±0.25%
±0.2%
I
IN
,
I
IN
, full
V
IN
Nom. Range no load load
(Volts) (Volts) (mA) (Amps)
48
48
24
48
48
24
48
48
24
36-75
36-75
18-36
36-75
36-75
18-36
36-75
36-75
18-36
50
50
1.72
2.34
1.54
0.77
1.16
5.41
2.29
1.17
4.6
3.43
1.16
3.37
2.28
Efficiency
Min.
85%
87.5%
Typ.
87%
Package C61
Case
inches
(mm)
V
OUT
I
OUT
Power
(Volts) (Amps) (Watts)
1.8
2.5
40
40
10
10
15
35
30
10
20
30
4.2
12.5
6.7
72
100
33
33
49.5
115.5
99
50
100
150
50.4
150
100.5
Typ.
50
Max.
100
100
UCH-3.3/15-D48N-C
OBSOLETE
OBSOLETE
UCH-3.3/35-D24P-C
OBSOLETE
UCH-3.3/30-D48N-C
OBSOLETE
UCH-5/10-D48N-C
UCH-5/20-D24P-C
OBSOLETE
UCH-5/30-D48N-C
UCH-12/4.2-D48N-C
UCH-12/12.5-D48N-C
OBSOLETE
UCH-15/6.7-D48N-C
➂
*
*
*
*
*
*
*
*
*
*
3.3
50
80
87%
89%
100
5
12
12
15
60
50
60
80
50
70
150
100
150
150
±0.25%
48
36-75
90
2.4×2.28×0.40
90%
(61×57.9×10.2)
89%
90.5%
89%
91%
87.5% 90.5%
89% 92.6%
90%
92%
89%
85.5%
➀
Please refer to the full model number structure for additional ordering part numbers and options.
➁
All specifications are at nominal line voltage and full load, +25 °C. unless otherwise noted. See detailed specifications. Output capacitors are 1 µF ceramic in parallel with 10 µF electrolytic . Input cap is 22
µF, low ESR. I/O caps are necessary for our test equipment and may not be needed for your application.
➂
Pending UL and VDE certification.
*
LAST TIME BUY: AUGUST 31, 2014. CLICK HERE FOR OBSOLESCENCE NOTICE OF FEBRUARY 2014.
As of September 2014, ONLY the following part numbers will be available: UCH-5/20-D24PB-C; UCH-12/4.2-D48N-C;
100 μSec to ±1% 100 μSec to ±1% 200 μSec to ±1% 200 μSec to ±1% 200 μSec to ±1% 200 μSec to ±1% 200 μSec to ±1%
of final value
of final value
of final value
of final value
of final value
of final value
of final value
2.7 max.
3.75 max.
59 max.
49
15
2250
1500
1500
100
1000
Basic insulation
15
19
40
35
Current limiting, hiccup autorestart. Remove overload for recovery.
5
Output may be shorted continuously to ground (no damage).
4.95 V max
Starts if external voltage is less than V
NOM
.
4.62 max.
4.95 max.
−40 to +85 (See Derating Curves)
−40 to +110
−55 to +125
+120
To +85°C/85%, non-condensing
Soldering Guidelines
Murata Power Solutions recommends the specifications below when installing these converters. These specifications vary depending on the solder type. Exceeding these specifica-
tions may cause damage to the product. Your production environment may differ; therefore please thoroughly review these guidelines with your process engineers.
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