TWR-5/3000-15/500-D48A-C【PDF 3/8 页】CONV DC/DC TRI OUT 5,15,-15V

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TWR A-Series

Performance/Functional Speci?cations

Typical @ T A = +25°C under nominal line voltage and “full-load” conditions, unless noted. ?

Input

Input Voltage Range:

Absolute Maximum Ratings

20W, Triple Output DC-DC Converters

D12A Models

D48A Models

Input Current

Input Filter Type ?

Overvoltage Shutdown:

D12A Models

D48A Models

Reverse-Polarity Protection

On/Off (Sync.) Control (Pin 4) ?

Output

Total Output Power

V OUT Accuracy (50% loads):

+5V Output

±12V or ±15V Outputs

9-36 Volts (24V nominal)

18-75 Volts (48V nominal)

See Ordering Guide

Pi

40 Volts

80 Volts

Yes (Instantaneous, 6A maximum)

TTL high = off, low (or open) = on

20W max., sum of all outputs

±1%

±3%

Input Voltage:

“D12” Models

“D48” Models

Input Reverse-Polarity Protection

Output Overvoltage Protection

+5V Output

±12V Outputs

±15V Outputs

Output Current

Storage Temperature

Lead Temperature (soldering, 10 sec.)

44 Volts

88 Volts

Current must be <6A. Brief

duration only. Fusing recommended.

6.8 Volts, limited duration

±15 Volts, limited duration

±18 Volts, limited duration

Current limited. Max. currents are

model dependent.

–40 to +105°C

+300°C

Temperature Coef?cient

Ripple/Noise (20MHz BW) ?

Line/Load Regulation

Ef?ciency

Isolation Voltage ?

Isolation Capacitance

Current Limiting

Short Circuit Protection at 25oC

Overvoltage Protection

back

Dynamic Characteristics

Transient Response (50% load step)

Switching Frequency

Environmental

Operating Temperature (ambient):

Without Derating

With Derating

Storage Temperature

Physical

Dimensions

Shielding

Case Connections:

D12A Models

D48A Models

Case Material

Pin Material

Weight

±0.02% per °C

See Ordering Guide

See Ordering Guide

See Ordering Guide

1500Vdc, minimum

500pF

Power down to restart

5 min. max, 5V output

30 sec max.12/15V outputs

Zener/transorb clamps, magnetic feed-

300μsec max. to ±2% of ?nal value

165kHz (±15kHz)

–40 to +55°C

to +100°C (See Derating Curve)

–40 to +105°C

2" x 2" x 0.45" (51 x 51 x 11.4mm)

5-sided

Pin 2 (–V IN )

Pin 1 (+V IN )

Corrosion resistant steel with

non-conductive, epoxy-based, black

enamel ?nish and plastic baseplate

Copper alloy with gold plate over nickel

underplate

2.7 ounces (77 grams)

These are stress ratings. Exposure of devices to any of these conditions may adversely

affect long-term reliability. Proper operation under conditions other than those listed in

the Performance/Functional Speci?cations Table is not implied.

Technical Notes

Filtering and Noise Reduction

All A-Series TWR 20 Watt DC/DC Converters achieve their rated ripple and

noise speci?cations without the use of external input/output capacitors. In

critical applications, input/output noise may be further reduced by installing

electrolytic capacitors across the input terminals and/or low-ESR tantalum or

electrolytic capacitors across the output terminals. Output capacitors should

be connected between their respective output pin (pin 5, 6 or 8) and Common

(pin 7). The caps should be located as close to the power converters as

possible. Typical values are listed below. In many applications, using values

greater than those listed will yield better results.

To Reduce Input Ripple

D12A Models 20μF, 50V

D48A Models 10μF, 100V

To Reduce Output Ripple

+5V Output 47μF, 10V, Low ESR

±12/15V Outputs 33μF, 20V, Low ESR

In critical, space-sensitive applications, MPS may be able to tailor the internal

input/output ?ltering of these units to meet your speci?c requirements. Con-

tact our Applications Engineering Group for additional details.

Input Fusing

Certain applications and/or safety agencies may require the installation of

fuses at the inputs of power conversion components. For MPS A-Series TWR

20 Watt DC/DC Converters, you should use slow-blow type fuses with values

no greater than 4A for “D12A” models and 2A for “D48A” models.

On/Off Control

? These converters require 10% min. loading on their primary output and 20% min.

loading on their auxiliary outputs to maintain speci?ed regulation. Operation under no-load

conditions will not damage the devices; however they may not meet all listed speci?cations. For

testing and speci?cation purposes, “full load” is de?ned as 2.75A on the primary +5V output and

±250/200mA on the auxiliary ±12/15V outputs. This corresponds to a total output power of 19.75W.

? Application-speci?c internal input/output ?ltering can be recommended or perhaps added

internally upon request. Contact MPS Applications Engineering for details.

? Applying a voltage to the Control pin when no input power is applied to the converter can

cause permanent damage to the converter.

The On/Off Control pin (pin 4) may be used for remote on/off operation. A TTL

logic high (+2 to +5 Volts, 250μA max.) applied to pin 4 disables the converter.

A TTL logic low (0 to +0.8 Volts, 70μA max.), or no connection, enables the

converter. Control voltages should be referenced to pin 2 (–Input). Applying a

voltage to the Control pin when no input power is applied to the converter can

cause permanent damage to the converter.

? D48A models have BASIC, D12A models have Functional insulation.Devices can be screened

or modi?ed for higher guaranteed isolation voltages. Contact MPS Applications Engineering

for details.

? To avoid damage to the surface ?nish, please do not use certain cleaning agents such as Vigon.

Contact Murata Power Solutions for information.

www.murata-ps.com/support

MDC_TWR20W.E02 Page 3 of 8

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