twr-3.3 C&D Technologies., twr-3.3 Datasheet

twr-3.3

Manufacturer Part Number

twr-3.3

Description

Isolated, High Reliability 1 X 2 Dc/dc Converters

Manufacturer

C&D Technologies.

Datasheet

1.TWR-3.3.pdf (9 pages)

Current page: 1 of 9
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www.murata-ps.com

FEATURES

±12V/±15V and 3.3V/5V outputs

10-18V, 18-36V or 36-75V inputs

Up to 22.5 Watts total output power with

overtemperature shutdown

To 87% efficiency; 80-100mV Ripple and

Noise

1" x 2" x 0.5" encapsulated package

1500Vdc isolation for both outputs

Designed to meet UL 60950-1, CSA-C22.2

No. 60950-1, EN60950-1 safety approvals

Extensive self-protection with short circuit

shutdown

Output overvoltage and overcurrent

protection

Input under and overvoltage shutdown

Ideal for mixed analog/digital systems

www.murata-ps.com/rohs

Figure 1. Simplified block diagram

For full details go to

Packaged in 1" x 2" encapsulated modules, the TWR 22W series DC/DC converters offer three

outputs arranged as a unipolar low voltage supply and a higher voltage

bipolar output pair. The unipolar section supplies either +3.3V at 4A maximum or +5V at 3A

maximum. The bipolar outputs are either ±12Vdc at 300mA maximum or ±15Vdc at 250mA

and are ideal for op amps, linear or analog circuits. A single TWR converter can power applica-

tions with combined analog and digital circuits such as a CPU-controlled voice switch, embed-

ded telephone modem or analytical instruments.

The input section is fully isolated from the outputs up to 1500Vdc minimum using Basic insula-

tion. Three wide input ranges are available including 10-18V (12Vdc nominal), 18-36V (24Vdc

nomimal) or 36-75V (48Vdc nominal). Peak-to-peak output ripple/noise is typically 80-100mV

at full load. Efficiencies range up to 87%.

The TWR 22W series outputs will limit their current if driven to overload and may be short

circuited indefinitely without damage. The inputs will shut down if input voltage is either over or

under limits or has reversed input voltage. These converters will operate at higher temperatures

with adequate airflow.

The unipolar output features line and load regulation of ±1%. Excellent dynamic response

assures transient load change settling within 100 microseconds. Other convenience features

include a remote On/Off control to turn the outputs on via digital logic, CPU bit, control transis-

tor or a relay.

Fabrication uses DATEL’s advanced surface mount automated pick-and-place assembly and

computer-controlled parameter testing. All TWR 22W series are designed to meet safety

requirements in UL, EN60950-1 and CSA-C22.2 No.60950-1.

Typical units

Typical topography is shown.

Isolated, High Reliability 1" x 2" DC/DC Converters

Triple Output/TWR Models

Technical enquiries email: sales@murata-ps.com, tel:

MDC_TWR22.B02

+1 508 339 3000

Page 1 of 9

Related parts for twr-3.3

twr-3.3 Summary of contents

Page 1

... Peak-to-peak output ripple/noise is typically 80-100mV at full load. Efficiencies range up to 87%. The TWR 22W series outputs will limit their current if driven to overload and may be short circuited indefinitely without damage. The inputs will shut down if input voltage is either over or under limits or has reversed input voltage ...

Page 2

... Performance Specifications and Ordering Guide V I OUT OUT Model Volts Amps 3.3 4 TWR-3.3/4-12/300-D12-C ±12 0.3 3.3 4 TWR-3.3/4-12/300-D24-C ±12 0.3 3.3 4 TWR-3.3/4-12/300-D48N-C ±12 0.3 3.3 4 TWR-3.3/4-15/250-D12-C ±15 0.25 3.3 4 TWR-3.3/4-15/250-D24-C ±15 0.25 3.3 4 TWR-3.3/4-15/250-D48N-C ±15 0. TWR-5/3-12/300-D12-C ±12 0 TWR-5/3-12/300-D24-C ±12 0 TWR-5/3-12/300-D48N-C ±12 0 TWR-5/3-15/250-D12-C ±15 0. TWR-5/3-15/250-D24-C ± ...

Page 3

... Remove overload for recovery. Short-Circuit Current: 3. Output 2 Amps maximum ±12V or ±15V Outputs 1 Amp maximum www.murata-ps.com Triple Output/TWR Models Isolated, High Reliability 1" x 2" DC/DC Converters Short Circuit Duration (no damage) Overvoltage Protection: 3. Output ±12V or ±15V Outputs Dynamic Load Response (50-100% loadstep) 3. Output ± ...

Page 4

... Ripple Current and Output Noise All TWR converters are tested and specified for input reflected ripple cur- rent (also called Back Ripple Current) and output noise using specified filter components and test circuit layout as shown in the figures below. Input capacitors must be selected for low ESR, high AC current-carrying capabil- ity at the converter’ ...

Page 5

... Contact DATEL if you need further advice on these topics. Remote On/Off Control The TWR models include an input pin which can turn on or shut off the converter by remote signal. For positive logic models (no model number suffix), if this pin is left open, the converter will always be enabled as long as proper input power is present ...

Page 6

... Most PWM controllers, including those on the TWR’s, will tolerate opera- tion up to about +100 degrees Celsius doubt, attach a thermal sensor to the package near the output components and measure the surface temperature after allowing a proper warm-up period ...

Page 7

... Triple Output/TWR Models Isolated, High Reliability 1" x 2" DC/DC Converters Typical Performance Curves for TWR Series Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000 MDC_TWR22.B02 Page ...

Page 8

Page 9

... Germany: München, Tel: +49 (0)89-544334-0, email: munich@murata-ps.com Japan: ISO 9001 REGISTERED 06/12/08 China: © 2008 Murata Power Solutions, Inc. Triple Output/TWR Models Note: Some model number combinations may not be available. Contact Murata Power Solutions. Mansfield (MA), Tel: (508) 339-3000, email: sales@murata-ps.com Milton Keynes, Tel: +44 (0)1908 615232, email: mk@murata-ps.com Montigny Le Bretonneux, Tel: +33 (0 01, email: france@murata-ps ...

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