Applications
• Servers, Switches and Data Storage • Networking Gear
U3 SERIES
DC/DC MODULES
• Wireless Communications
• Data Communications
• Telecommunications
• Industrial / Medical
• Distributed Power Architecture
• Semiconductor Test Equipment
The U3 Family of high efficiency DC/DC converters offer power levels of up to 3 Watt, which exceeds that of other sub-bricks with the same package, while also providing Ultra-Wide Input Voltage
Range. With a 4:1 input voltage range and single & multi-outputs, these converters provide versatility without sacrificing the board space. All models feature an input filter, continuous short circuit
protection and regulated outputs. The fully enclosed, encapsulated construction facilitates maximum power delivered with the highest efficiency of up to 80%. All converters combine creative
design practices with highly derated power devices to achieve very high reliability, high performance and low cost solution to systems designers.
Specifications & Features Summary
• Regulated Outputs
• 5-sided metal shield High Isolation versions
• 200KHz Switching Frequency
• No airflow or heatsink required
• Voltage Accuracy ± 2%
• -25°C to +71°C ambient operation
• Continuous Short-circuit protection
• up to 3KV, 10MΩ input-to-output isolation
• Pi Input Filter
Approval Pending
• 4:1 Input Range
• THROUGH-HOLE PACKAGES ONLY
SPECIFICATIONS
Model Num
U3-12S5
U3-12S12
U3-12S15
U3-12D5
U3-12D12
U3-12D15
U3-12S3.3
U3-48S5
U3-48S12
U3-48S15
U3-48D5
VIn
VOut
5.0 VDC
IOut
INo Load
IFull Load
Eff
Case
T
T
T
T
T
T
T
T
T
T
T
T
T
T
Input Specifications
Input Voltage Range
9-36 VDC
9-36 VDC
9-36 VDC
9-36 VDC
9-36 VDC
9-36 VDC
9-36 VDC
18-72 VDC
18-72 VDC
18-72 VDC
18-72 VDC
18-72 VDC
18-72 VDC
18-72 VDC
600.0 mA
250.0 mA
200.0 mA
±300.0 mA
±125.0 mA
±100.0 mA
600.0 mA
600.0 mA
250.0 mA
200.0 mA
±300.0 mA
±125.0 mA
±100.0 mA
600.0 mA
15.0 mA
15.0 mA
15.0 mA
25.0 mA
25.0 mA
25.0 mA
15.0 mA
7.5 mA
7.5 mA
7.5 mA
12.0 mA
12.0 mA
12.0 mA
7.5 mA
174 mA
165 mA
165 mA
179 mA
174 mA
174 mA
117 mA
87 mA
78 mA
78 mA
88 mA
87 mA
87 mA
58 mA
72%
76%
76%
70%
72%
72%
70%
72%
80%
80%
71%
72%
72%
70%
12.0 VDC
15.0 VDC
±5.0 VDC
±12.0 VDC
±15.0 VDC
3.3 VDC
24V--------9-36V
48V--------18-72V
Input Filter
Pi Type
Output Specifications
Voltage Accuracy
Voltage Balance(Dual)
Temperature Coefficient
±2.0% max.
±1.0% / max.
±0.05% / oC
5.0 VDC
12.0 VDC
15.0 VDC
±5.0 VDC
±12.0 VDC
±15.0 VDC
3.3 VDC
Ripple and Noise, 20MHz BW,
Single & ±5Vo
100mV p-p max.
1% p-p max.
Continuous
±0.5%
Dual
U3-48D12
U3-48D15
U3-48S3.3
Short Circuit Protection
Line Regulation, Single/Dual1
Load Regulation, Single2
Dual3
±0.5%
±1.0%
Mechanical Outline and Pinouts for U3 Family DC/DC Converters
Efficiency
See Table
109 ohms
100KHz, min
-25oC to +71oC
95oC max.
100oC max.
Isolation Resistance
Switching Frequency
Operating Temperature Range
Case Temperature (Plastic case)
(Copper case)
Cooling
Storage Temperature Range
Dimensions
Free-Air Convection
-40oC to +100oC
1.25X0.8X0.4 Inches
(31.8X20.3X10.2mm)
Isolation Voltage 500VDC
(Standard Models)
1,500VDC min (Add suffix “HM”)
3K VDC min4 (Add Suffix “H”)
Case Material
Suffix “HM” Models
Suffix "M" Models
Standard Models
Suffix "HM" Models
Non-Conductive Black Plastic
Black Coated Copper with Non-
Conductive Base
Notes
1.
2.
3.
4.
Measured From High Line to Low Line
Measured From Full Load to 10% Load
Measured From Full Load to 1/4 Load
Non-Conductive Black Plastic Only
Typical at Ta= +25 ºC under nominal input voltages of 24V and 48VDC, unless noted. The information and specifications contained in this brief are believed to be accurate and reliable at the time of publication. Specifications
are subject to change without notice. Refer to product specification sheet for performance characteristics and application guidelines.
Consult factory for hundreds of other available input/output voltage configurations.
Intronics Power Inc. 1400 Providence Highway, Building 2, Norwood, MA 02062-5015
•
Phone: 1-781-551-5500 Fax: 1-781-551-5555 Rev. B
•
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