Features



 Total Dose > 25 kRads(Si)





 Internal EMI filter; Converter Capable of

meeting MIL-STD-461C CE03 and CS01



 Low Weight < 85 grams



 Magnetically Coupled Feedback



 16V to 50V Input Range



 Up to 25W Output Power



 Single and Dual Output Models Include

3.3, 5, 12, 15, ±5, ±12, ±15V



 High Efficiency - to 82%



 -55°C to +125°C Operating Temperature Range



 100M @ 500VDC Isolation



 Under-Voltage Lockout



 Short Circuit and Overload Protection



 Adjustable Output Voltage



 External Inhibit



 1,500,000 Hour MTBF

 

HYBRID-HIGH RELIABILITY

RADIATION TOLERANT

DC-DC CONVERTER

M3H

M3L-SERIES

Description

The M3L-Series of DC-DC converters are radiation tolerant,

high reliability devices designed for moderate radiation

environments such as those encountered by low earth orbit

satellites and launch vehicles. For higher radiation environments,

the M3G-Series of DC-DC converters is recommended.

Features include small size, low weight and a high tolerance to

total ionizing dose, single event effects and environmental

stresses such as temperature extremes, mechanical shock,

and vibration. All components are fully de-rated to meet the

requirements of MIL-STD-975 and MIL-STD-1547 and

GSFC PPL-21 Appendix B. Extensive documentation including

Radiation Susceptibility, Thermal Analysis, Stress Analysis

and MTBF are available.

The converters incorporate a fixed frequency single forward

topology with magnetic feedback and an internal EMI filter.

These converters are capable of meeting the conducted

emissions and conducted susceptibility requirements of MIL

-STD-461C without any additional components. All models

include an external inhibit port and have an adjustable output

voltage. They are enclosed in a hermetic 1.5" x 2.3" x 0.425" steel

package and weigh less than 85 grams. The package utilizes

rugged ceramic feed-through copper core pins and is

sealed using parallel seam welding.

Manufactured in a facility fully qualified to MIL-PRF-38534,

these converters are fabricated utilizing DLA Land and

Maritime qualified processes. For available screening

options, refer to device screening table in the data sheet.

Non-flight versions of the M3L-Series converters are

available for system development purposes. Variations in

electrical specifications and screening to meet custom

requirements can be accommodated. Consult IR HiRel

San Jose for special requirements.

1

2016-09-21

PD-94519C

+

28V Input, Single/Dual Output

Applications



 Low Earth Orbit Satellites (LEO)



 Launch Vehicles