UEP-3.3/4500-D48-C Murata Power Solutions Inc, UEP-3.3/4500-D48-C Datasheet - Page 4

• Manufacturer Part Number: UEP-3.3/4500-D48-C
• Description: DC/DC TH 4.5A 48-3.3V UEP
• Manufacturer: Murata Power Solutions Inc
• Series: UEPr

Specifications of UEP-3.3/4500-D48-C

• Product: Isolated
• Output Power: 15 W
• Input Voltage Range: 36 V to 75 V
• Number Of Outputs: 1
• Output Voltage (channel 1): 3.3 V
• Output Current (channel 1): 4.5 A
• Isolation Voltage: 1.5 KV
• No. Of Outputs: 1
• Input Voltage: 36V To 75V
• Power Rating: 14.85W
• Output Voltage: 3.3V
• Output Current: 4.5A
• Approval Bodies: EN / UL
• Supply Voltage: 48V
• Dc / Dc Converter Case Style: Through Hole
• Rohs Compliant: Yes
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Floating Outputs
Since these are isolated DC/DC converters, their outputs are “floating.” Design-
ers will usually use the –Output (pin 5) as the ground/return of the load circuit.
You can, however, use the +Output (pin 4) as ground/return to effectively
reverse the output polarity.
Minimum Output Loading Requirements
3.3 and 5V models employ a synchronous-rectifier design topology. All models
regulate within spec and are stable under no-load conditions. 12/15V models
employ a traditional forward, diode-rectification architecture and require 25mA
loading to achieve their listed regulation specs. Operation under 25mA load
conditions will not damage the 12/15V devices; however they may not meet all
listed specifications.
Filtering and Noise Reduction
All UEP Series DC/DC Converters achieve their rated ripple and noise speci-
fications with no external input/output capacitors. In critical applications,
input/output noise may be further reduced by installing external I/O caps.
Input capacitors should be selected for bulk capacitance, low ESR and high
rms-ripple-current ratings. Output capacitors should be selected for low ESR
and appropriate frequency response. All caps should have appropriate voltage
ratings and be mounted as close to the converters as possible. The most effec-
tive combination of external I/O capacitors will be a function of load and layout
conditions.
Input Fusing
Certain applications and/or safety agencies may require the installation of
fuses at the inputs of power conversion components. Fuses should also be
used if the possibility of sustained, non-current-limited, input-voltage polarity
reversals exists. For DATEL UEP Series DC/DC Converters, you should use
slow-blow type fuses with values no greater than the following.
Trimming Output Voltages
These converters have a trim capability (pin 6) that allows users to adjust the
output voltage ±5%. Adjustments to the output voltage can be accomplished
via a trim pot, Figure 2, or a single fixed resistor as shown in Figures 3 and 4.
A single fixed resistor can increase or decrease the output voltage depend-
ing on its connection. Fixed resistors should have an absolute TCR less than
100ppm/°C to minimize sensitivity to changes in temperature.
A single resistor connected from the Trim (pin 6) to the +Output (pin 4), see
Figure 3, will decrease the output voltage. A resistor connected from the Trim
(pin 6) to –Output (pin 5) will increase the output voltage.
Trim adjustment greater than 5% can have an adverse effect on the converter's
performance and is not recommended.
TECHNICAL NOTES
D48 Models (1.2-4.5A)
D48 Models (6A)
D12 Models
D24 Models
VIN Range
www.murata-ps.com
Fuse Value
3 Amps
2 Amps
1 Amp
2 Amp
Accuracy of adjustment is subject to tolerances of resistor values and factory-
adjusted output accuracy. V
Ultra-High Density, 2" x 1", 1.2-6 Amp,15-30 Watt DC/DC’s
Figure 3. Trim Connections To Decrease Output Voltage Using Fixed Resistors
Figure 4. Trim Connections To Increase Output Voltage Using Fixed Resistors
UEP-3.3/4500-D12
UEP-3.3/4500-D24
UEP-3.3/4500-D48
UEP-3.3/6000-D48
UEP-5/3500-D12
UEP-5/3500-D24
UEP-5/3500-D48
UEP-5/6000-D48
UEP-12/1400-D12
UEP-12/1400-D24
UEP-12/1400-D48
UEP-15/1200-D12
UEP-15/1200-D24
UEP-15/1200-D48
Single Output UEP Models
Model
Figure 2. Trim Connections Using A Trim Pot
Technical enquiries email: [e-mail], tel:
O
= desired output voltage.
R
R
R
R
T
T
T
R
T
R
R
R
DOWN
DOWN
DOWN
DOWN
T
T
T
T
UP
UP
UP
UP
(k ) =
(k ) =
(k ) =
(k ) =
(k ) =
(k ) =
(k ) =
(k ) =
Trim Equation
2.49(V
MDC_UEP Models.B02 Page 4 of 11
2.49(V
6.34(V
7.87(V
V
V
V
V
36.23
56.16
O
3.16
6.292
O
O
3.3 V
5 V
12 V
15 V
O
3.3
12
O
O
O
O
15
5
O
1.27)
2.527)
5.714)
O
7.136)
O
O
16.9
49.9
15
63.4
[phone]
–15
16.9
49.9
63.4