UWR Models
www.murata-ps.com
Single Output, High-Density,
6 Amp/15 Watt DC/DC Converters
Typical units
PRODUCT OVERVIEW
FEATURES
n
1.2-2.5VOUT models source 6 Amps
n
3.3VOUT models source 4.25 Amps
n
5/12/15VOUT models deliver full 15 Watts
n
Synchronous-rectifier topologies
n
Guaranteed efficiencies to 88%
n
Choice of 3 input voltage ranges:
10-18V, 18-36V, 36-75V
n
–40 to +60/70°C ambient w/o derating
n Fully isolated (1500Vdc); I/O protected
n
Meets UL/IE/EN60950-1 certification,
2nd Edition
n
CE mark (75VIN models)
The new 1.2, 1.5V, 1.8V and 2.5V models in
Murata Power Solutions’ flagship 7-15 Watt
A-Series can source a continuous 6 Amps. This
is the most "low-voltage" current available from
a standard 1" x 2" package, and these power
converters exemplify Murata Power Solutions’
relentless drive to bring you more power/current,
from standard packages, without compromising
reliability or resorting to thermal specmanship.
By combining a high-frequency, high-efficiency
(to 88%), synchronous-rectifier topology with
the newest components and time-tested, fully
automated, SMT-on-pcb construction, these
UWR Models are able to bring you 7-15W (@
up to 6A) in the standard 1" x 2" package from
which most competitors can only get 5-10W (@
3-4A). All UWR’s deliver their full output power
over ambient temperature ranges from –40°C
to as high as +70°C (model and input voltage
dependent) without heat sinks or supplemental
forced-air cooling. Devices derate to +100°C.
Output voltages are 1.2, 1.5, 1.8, 2.5, 3.3, 5,
12 or 15 Volts. Input voltage ranges are 10-18V
(D12 models), 18-36V (D24 models) or 36-75V
(D48 models). All models feature input pi filters,
input undervoltage and overvoltage lockout, input
reverse-polarity protection, output overvoltage
protection, output current limiting, and continuous
short-circuit protection. On/off control and outputtrim functions are optional (see Optional Functions).
All models are designed to meet IEC950, UL1950
and EN60950-1, 2nd Edition safety requirements.
D48 models (36-75V inputs) are CE marked.
UWR 7-15W DC/DC’s are packaged in lowcost, light-weight, diallyl phthalate (UL94V-0
rated) plastic packages with standoffs. EMC
compliance is achieved via a low-noise design
rather than through expensive metal shielding.
n
Standard 1" x 2" packages and pinouts
n
Optional VOUT trim and on/off control
+VIN
(1)
+VOUT
(4)
SWITCH
CONTROL
COMMON
(6)
–VIN
(2)
PWM
CONTROLLER
ON/OFF
CONTROL
(3)
(OPTIONAL)
OPTO
ISOLATION
REFERENCE &
ERROR AMP
TRIM
(5)
(OPTIONAL)
UVLO & OVLO
COMPARATORS
Typical topology is shown.
Figure 1. Simplified Schematic
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com/support
MDC_UWR_7-15.I03 Page 1 of 13
UWR Models
Single Output, High-Density,
6 Amp/15 Watt DC/DC Converters
Performance Specifications and Ordering Guide ➀
ORDERING GUIDE
Output
Root Model ➆
UWR-1.2/6000-D12A-C
UWR-1.2/6000-D24A-C
UWR-1.2/6000-D48A-C
UWR-1.5/6000-D12A-C
UWR-1.5/6000-D24A-C
UWR-1.5/6000-D48A-C
UWR-1.8/6000-D12A-C
UWR-1.8/6000-D24A-C
UWR-1.8/6000-D48A-C
UWR-2.5/6000-D12A-C
UWR-2.5/6000-D24A-C
UWR-2.5/6000-D48A-C
UWR-3.3/4250-D12A-C
UWR-3.3/4250-D24A-C
UWR-3.3/4250-D48A-C
UWR-3.3/4500-D48ANT-C ➄
UWR-5/3000-D12A-C
UWR-5/3000-D24A-C
UWR-5/3000-D24AT-C
UWR-5/3000-D48A-C
UWR-5/3000-D48ANST-C ➅
UWR-12/1250-D12A-C
UWR-12/1250-D24A-C
UWR-12/1250-D48A-C
UWR-15/1000-D12A-C
UWR-15/1000-D24A-C
UWR-15/1000-D48A-C
Vout
(Volts)
Iout
(mA)
1.2
1.2
1.2
1.5
1.5
1.5
1.8
1.8
1.8
2.5
2.5
2.5
3.3
3.3
3.3
3.3
5
5
5
5
5
12
12
12
15
15
15
6000
6000
6000
6000
6000
6000
6000
6000
6000
6000
6000
6000
4250
4250
4250
4500
3000
3000
3000
3000
3000
1250
1250
1250
1000
1000
1000
R/N (mV p-p) ➁
Typ.
Max.
40
40
40
30
30
30
30
30
30
30
30
30
85
45
85
85
85
85
85
85
85
85
85
85
85
85
85
75
75
75
55
55
55
55
55
55
55
50
55
100
70
100
100
100
100
100
100
100
100
100
100
100
100
100
Input
Regulation (max.)
Line
Vin nom. Range
Load ➂ (Volts) (Volts)
±0.2%
±0.5%
±0.05% ±0.75%
±0.2%
±0.5%
±0.1%
±0.5%
±0.1%
±0.5%
±0.1%
±0.5%
±0.1%
±0.5%
±0.1%
±0.5%
±0.1%
±0.5%
±0.1%
±0.5%
±0.075% ±0.25%
±0.1%
±0.5%
±0.2%
±0.5%
±0.2%
±0.5%
±0.2%
±0.5%
±0.2%
±0.5%
±0.2%
±0.3%
±0.2%
±0.3%
±0.2%
±0.3%
±0.2%
±0.3%
±0.2%
±0.3%
±0.2%
±0.3%
±0.2%
±0.3%
±0.2%
±0.3%
±0.2%
±0.3%
±0.2%
±0.3%
±0.2%
±0.3%
12
24
48
12
24
48
12
24
48
12
24
48
12
24
48
48
12
24
24
48
48
12
24
48
12
24
48
Efficiency
Iin
(mA) ➃
Min.
Package
(Case, Pinout)
Typ.
10-18 80/769
76%
18-36 45/375
78%
36-75 80/188
78%
10-18 75/914
77.5%
18-36 40/454
78%
36-75 25/226
78.5%
10-18 70/1084
81%
18-36 35/539
82.5%
36-75 25/268
83%
10-18 80/1489
83%
18-36 45/727 84.75%
36-75 25/367
84%
10-18 80/1375
83%
18-36 45/672
85%
36-75 35/336
85%
36-75 35/356
85%
10-18 110/1471 83%
18-36 55/710
85.5%
18-36 55/710
85.5%
36-75 35/355
85.5%
36-75 35/355
85.5%
10-18 45/1471 82.5%
18-36 45/718
85%
36-75 20/359
85%
10-18 45/1471 82.5%
18-36 45/718
85%
36-75 20/359
85%
78%
80%
80%
79.5%
80%
80.5%
83%
84.5%
85%
86%
86%
86%
86%
87%
87%
87%
85%
88%
88%
88%
88%
85%
87%
87%
85%
87%
87%
C14, P22
C14, P22
C14, P22
C14, P22
C14, P22
C14, P22
C14, P22
C14, P22
C14, P22
C14, P22
C14, P22
C14, P22
C14, P22
C14, P22
C14, P22
C14, P22
C14, P22
C14, P22
C14, P22
C14, P22
C14, P22
C14, P22
C14, P22
C14, P22
C14, P22
C14, P22
C14, P22
As of October 2016, ONLY the following part numbers will be available: UWR-3.3/4250-D12A-C; UWR-3.3/4250-D24A-C;
UWR-3.3/4250-D24ACT-C; UWR-3.3/4250-D48A-C; UWR-5/3000-D12A-C; UWR-5/3000-D24A-C; UWR-5/3000-D48A-C;
UWR-12/1250-D12A-C; UWR-12/1250-D24A-C; UWR-15/1000-D24AT-C.
➀ Typical at TA = +25°C under nominal line voltage and full-load conditions, unless otherwise noted.
➁ Ripple/Noise (R/N) is tested/speciifed over a 20MHz bandwidth. All models are specified with
two external 0.47µF multi-layer ceramic capacitors located 2-3 inches from the module being
tested.
➂ Load regulation is specified over 10%-100% load conditions. 1.5-5V models are stable and
regulate under no-load conditions. 12/15V models have minimum loading requirements See
Performance/Functional Specifications.
➃ Nominal line voltage, no-load/full-load conditions.
➄ See page 12.
➅ Special trim version. See Trim Equations, page 5. Quantity order required.
➆ Please refer to the Part Number Structure for additional options when ordering.
For Part Number Structure, please see page 12.
www.murata-ps.com/support
MDC_UWR_7-15.I03 Page 2 of 13
UWR Models
Single Output, High-Density,
6 Amp/15 Watt DC/DC Converters
Performance/Functional Specifications
Typical @ TA = +25°C under nominal line voltage and full-load conditions, unless noted. ➀➁
Input
Input Voltage Range:
D12A Models
D24A Models
D48A Models
10-18 Volts (12V nominal)
18-36 Volts (24V nominal)
36-75 Volts (48V nominal)
Overvoltage Shutdown:
D12A Models
D24A Models
D48A Models
18.5-21 Volts (20V typical)
37-41 Volts (38V typical)
77-81 Volts (78.5V typical)
Start-Up Threshold: ➂
D12A Models
D24A Models
D48A Models
9.4-10 Volts (9.6V typical)
16.5-18 Volts (17V typical)
34-36 Volts (35V typical)
Undervoltage Shutdown: ➂
D12A Models
D24A Models
D48A Models
7-8.5 Volts (8V typical)
15.5-17.5 Volts (16.5V typical)
32.5-35.5 Volts (34V typical)
Input Current:
Normal Operating Conditions
Standby Mode (Off, OV, UV)
Dynamic Characteristics (continued)
Switching Frequency
1.2V models
1.5V D48 models
1.8V D12 models
1.8V D24 models
1.8V D48 models
2.5 and 1.5 D12/D24 models
3.3-12V models
250-300kHz ±30kHz, model dependent
260kHz (±30kHz)
280kHz (±30kHz)
250kHz (±30kHz)
210kHz (±20kHz)
340kHz (±40kHz)
310-345kHz ±10%, model dependent
Environmental
Operating Temperature (Ambient):
(See Derating Curves)
–40 to +85°C with Derating
Case Temperature:
Maximum Allowable
+100°C
Storage Temperature
–40 to +105°C
Physical
Dimensions
2" x 1" x 0.475" (51 x 25 x 12.1mm)
Shielding
None
See Ordering Guide
5mA
Case Material
Diallyl phthalate, UL94V-0 rated
Pin Material
Gold-plated copper alloy with nickel underplate
Input Filter Type
Pi
Weight
1.4 ounces (39.7 grams)
Reverse-Polarity Protection
Brief duration, 10A maximum
On/Off Control (Optional, Pin 3): ➃ ➄
D12AC, D24AC, & D48AC Models
D12AN, D24AN, & D48AN Models
On = open or 13V to +VIN, IIN = 1-5mA typ.
Off = 0-0.8V, IIN = 3-12mA typ.
On = 0-0.8V, IIN = 3-12mA typ.
Off = open or 3.3-5.5V, IIN = 1-5mA typ.
Output
VOUT Accuracy (50% load):
±1.5% (±2% for model UWR-1.2/6000)
Minimum Loading for Specification: ➁
1.2V/1.5V/1.8V/2.5V/3.3V/5V Outputs No load
12V/15V Outputs
10% of IOUT max.
Minimum Loading for Stability: ➁
1.2V/1.5V/1.8V/2.5V/3.3V/5V Outputs
12V/15V Outputs
No load
25mA
Ripple/Noise (20MHz BW) ➀ ➅
See Ordering Guide
Line/Load Regulation
See Ordering Guide
Efficiency
See Ordering Guide
Isolation Voltage:
Input-to-Output
1500Vdc minimum (functional)
➀ All models are specified with two external 0.47µF multi-layer ceramic capacitors installed across
their output pins.
➁ See Minimum Output Loading Requirements under Technical Notes.
➂ See Technical Notes for details.
➃ The On/Off Control and Trim functions are optional and must be installed by MPS. See Optional
Functions or contact MPS for details.
➄ The On/Off Control is designed to be driven with open-collector logic or the application of appropriate voltages (referenced to –Input, pin 2). Applying a voltage to the On/Off Control pin when
no input voltage is applied to the converter may cause permanent damage. See Technical Notes.
➅ Output noise maybe further reduced with the addition of additional external output capacitors.
See Technical Notes.
➆ Operating temperature range without derating is model and input-voltage dependent. See
Temperature Derating.
➇ RoHS-6 hazardous substance compliance does not claim EU RoHS exemption 7b (lead in solder).
Absolute Maximum Ratings
Input Voltage:
Continuous:
D12 Models
D24 Models
D48 Models
Transient (100msec):
D12 Models
D24 Models
D48 Models
Isolation Capacitance
470pF
Isolation Resistance
100MΩ
Current Limiting:
1.2V-5V Outputs
12V and 15V Outputs
Hiccup technique, auto-recovery
Power-limiting technique, auto-recovery
Input Reverse-Polarity Protection
Overvoltage Protection
Zener/transorb clamp, magnetic feedback
Temperature Coefficient
±0.04% per °C
Output Overvoltage Protection:
1.2V/1.5/1.8V Outputs
2.5V/3.3V Outputs
5V/12V/15V Outputs
Dynamic Characteristics
Transient Response (50% load step)
1.2V-2.5V models
3.3V-15V models
Start-Up Time: ➂
VIN to VOUT
On/Off to VOUT
Output Current
200µsec max. to ±2% of final value
200µsec max. to ±1.5% of final value
50msec
30msec
22 Volts
44 Volts
88 Volts
50 Volts
50 Volts
100 Volts
Current must be