Aerospace and Defense DC-DC Converters

IR HiRel offers custom converters based on the standard hybrid series, as well as open-frame PWB converter platforms. Contact sales for further information.

Additional parametric data and packaging information is available through the hyperlinks within the table.

DC-DC Converter Solutions

IR HiRel is a leader in power management solutions for high reliability and space applications. Located in San Jose, California, the facility is DLA certified Class K to design and manufacture ruggedized hermetic hybrid DC-DC converters. The group is supported by design centers in Herlev, Denmark for spacecraft power system designs and complex power conversion system solutions, and silicon design center in El Segundo, California. Decades of heritage in high reliability applications signify the company’s unwavering commitment to deliver nothing but the very best in power management solutions to the defense, aerospace, and space industries.

Our standard and radiation-hardened converters are at the heart of systems powering mankind’s most missioncritical applications. You’ll find us throughout the world and above it, in commercial and military aircraft, missiles, smart munitions, weapon systems, launch vehicles, LEO/MEO satellites, and GEO satellites.

IR’s steady thrust in crafting the best in technology with the best in technique for the industry has resulted in highly reliable solutions rich in innovation and unmatched in ability. IR’s new 89% efficient, all-hybrid Electronic Power Conditioner (EPC) developed for spacecraft is but one example.

Product Offerings

Standard HiRel converters for military, aerospace and rugged industrial applications Radiation Tolerant converters for low to moderate radiation environments total ionizing dose 25-30krad; Single Event Effect (SEE) rating with LET of 37-60 MeV•cm2/mg Radiation Hardened converters for harsh environments total ionizing dose is 100k-1Mrad; SEE rating with LET of > 83 MeV•cm2/mg. HiRel converters for Space Applications Input EMI filters, either internal or external to standard converters, for providing EMC compliance to MIL-STD-461C and the latest revision of the conducted emission requirements Custom converter designs for customer-specific requirements

Product Capabilities

	Input voltages from 11VDC - 500VDC Operating input voltage ratio typically 3:1 Nominal inputs of 15, 28, 50, 70, 120, 270VDC Standard output voltages from 1.5V - 200V Output power from 5W to 400W Single, dual and triple output configuration I/O isolation >100mΩ @500VDC Operating temperature from -55ºC +125ºC

Key Features

Process, Design and Manufacturing Expertise Honed for Aerospace and Defense Input-Output isolation Active inrush current limiting Fixed switching frequency Common frequency synchronization Soft start Short-circuit and overload protection Input undervoltage lockout Duty cycle limiting over-voltage protection Output turn-on/turn off sequencing Operation over -55°C to +125°C without de-rating Magnetically-coupled feedback TTL-compatible on/off command Isolated pulse on/off command	Independent output voltage regulation Parallel operation with equal current rating Low profile, hermetically-sealed packages Copper I/O pins MIL-STD-461 EMI compliance Class H and Class K processes (IAW MIL-PRF-38534) Immunity to TID, SEE, neutron and prompt dose radiation environments in space Reliability screening option

Standards and Practices

In addition to design and quality practices common to commercial electronics, IR subjects each of its ruggedized designs to the rigors necessary to insure reliable operation in hostile environments. Among these are:
	MIL-STD-975 and MIL-STD-1547 de-rating guidelines MIL-PRF-38534 MIL-STD-704 MIL-STD-461 NASA EEE-INST-002 Circuit simulation Finite Element Analysis Thermal, stress and worst-case analysis Shock and vibration analysis End-of-life analysis Reliability analysis (IAW MIL-HDBK-217F) Radiation susceptibility analysis First article qualification IAW MIL-STD-883 and MIL-STD-810

Quality Documents

• AS9100 Quality Certificate
• HBF-18-01 Supplier Quality Clauses Flow Down
• HBF-18-03 Supplier Product Process Change Request

Unlike standard commercial products, HiRel products must be submitted to various levels of quality conformance testing to ensure that the products are capable of performing to specifications in the often harsh environments of military and space applications. Both the United States and European community have each developed specifications that detail the sequence of quality conformance testing.

In the United States, the Defense Logistics Agency (DLA) is the controlling agency and has issued specifications that govern the quality conformance testing sequence performed on semiconductor devices and hybrid modules, namely MIL-PRF-19500/MIL-STD-750, MIL-PRF-38534/MIL-STD-883 and MIL-PRF-38535/MIL-STD-883.

MIL-PRF-38534/MIL-STD-883 are the controlling specifications for power hybrids. MIL-STD-883 directs hybrids te be manufactured to class H or class K.

International Rectifier HiRel Products Group manufactures and tests hermetic products to one of three distinct quality conformance levels: (1) commercial hermetic, (2) source control drawing (SCD), or (3) MIL-PRF-38534, MIL-PRF-38535 qualified.

Screening and Quality Conformance Inspection Requirements

• MIL-PRF-38534

QPL Listing - DC-DC

• DC-DC Converters
• EMI Filters

Glossary

Class H: Class H is the standard military quality level provided in MIL-PRF-38534, General Specification for Hybrid Microcircuits. It is intended for space applications.

Level B: Class level B defines the screening requirements for high reliability military applications as specified in MIL-STD-883 and is intended for use in class H products.

Level S: Class level S defines the screening requirements for high reliability space applications as specified in MIL-STD-883 and is intended for use in class K products.

JAN: JAN (Joint Army Navy) is the prefix assigned by the DLA to designate devices on the DLA qualified parts list.

JANTX: Military screening level as specified in MIL-PRF-19500 for a DLA qualified device.

JANTXV: Military with visual inspection screening level as specified in MIL-PRF-19500 for a DLA qualified device.

JANS: Space level screening as specified in MIL-PRF-19500 for a DLA qualified device.