Applications

• Servers, Switches and Data Storage • Networking Gear

• Wireless Communications

• Data Communications

• Distributed Power Architecture

• Telecommunications

• Semiconductor Test Equipment

• Industrial / Medical

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

• -25°C to +71°C ambient operation

• Continuous Short-circuit protection

• up to 3KV, 10M

Ω input-to-output isolation

• Pi Input Filter

• 4:1 Input Range

U3 SERIES

DC/DC MODULES

Approval Pending

Intronics Power Inc. 1400 Providence Highway, Building 2, Norwood, MA 02062-5015

• 5-sided metal shield High Isolation versions

• 200KHz Switching Frequency

• No airflow or heatsink required

• Voltage Accuracy ± 2%

Model Num

Eff

Case

U3-12S5

9-36 VDC

5.0 VDC

600.0 mA

15.0 mA

174 mA

72%

T

U3-12S12

9-36 VDC

12.0 VDC

250.0 mA

15.0 mA

165 mA

76%

T

U3-12S15

9-36 VDC

15.0 VDC

200.0 mA

15.0 mA

165 mA

76%

T

U3-12D5

9-36 VDC

±5.0 VDC

±300.0 mA

25.0 mA

179 mA

70%

T

U3-12D12

9-36 VDC

±12.0 VDC

±125.0 mA

25.0 mA

174 mA

72%

T

U3-12D15

9-36 VDC

±15.0 VDC

±100.0 mA

25.0 mA

174 mA

72%

T

U3-12S3.3

9-36 VDC

3.3 VDC

600.0 mA

15.0 mA

117 mA

70%

T

U3-48S5

18-72 VDC

5.0 VDC

600.0 mA

7.5 mA

87 mA

72%

T

U3-48S12

18-72 VDC

12.0 VDC

250.0 mA

7.5 mA

78 mA

80%

T

U3-48S15

18-72 VDC

15.0 VDC

200.0 mA

7.5 mA

78 mA

80%

T

U3-48D5

18-72 VDC

±5.0 VDC

±300.0 mA

12.0 mA

88 mA

71%

T

U3-48D12

18-72 VDC

±12.0 VDC

±125.0 mA

12.0 mA

87 mA

72%

T

U3-48D15

18-72 VDC

±15.0 VDC

±100.0 mA

12.0 mA

87 mA

72%

T

U3-48S3.3

18-72 VDC

3.3 VDC

600.0 mA

7.5 mA

58 mA

70%

T

SPECIFICATIONS

Input Specifications

Input Voltage Range

24V--------9-36V

48V--------18-72V

Input Filter

Pi Type

Output Specifications

Voltage Accuracy

±2.0% max.

Voltage Balance(Dual)

±1.0% / max.

Temperature Coefficient

Ripple and Noise, 20MHz BW,

Single & ±5Vo

100mV p-p max.

Dual

1% p-p max.

Short Circuit Protection

Continuous

±0.5%

±0.5%

±1.0%

Efficiency

See Table

Isolation Resistance

Switching Frequency

100KHz, min

Operating Temperature Range

Case Temperature (Plastic case)

(Copper case)

Cooling

Free-Air Convection

Storage Temperature Range

Dimensions

1.25X0.8X0.4 Inches

(31.8X20.3X10.2mm)

Isolation Voltage 500VDC

(Standard Models)

1,500VDC min (Add suffix “HM”)

Suffix “HM” Models

Suffix "M" Models

Case Material

Standard Models

Non-Conductive Black Plastic

Suffix "HM" Models

Black Coated Copper with Non-

Conductive Base

Notes

1.

Measured From High Line to Low Line

2.

Measured From Full Load to 10% Load

3.

Measured From Full Load to 1/4 Load

4.

Non-Conductive Black Plastic Only

Mechanical Outline and Pinouts for U3 Family DC/DC Converters

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.