IR HiRel Product Families



AFL DC-DC converter with 270 Vin 3.3 Vout single output, 66W



Input-Output isolation

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

Low profile, hermetically-sealed packages

Copper I/O pins

Reliability screening option


Total Output Power (W)66W
Input Voltage Min (V)160
Input Voltage Max (V)400
Output Voltage Single (V)+ 3.3
DLA QualifiedSMD
Qual LevelStandard
DLA Drawing5962-99553
Base Part StatusActive
Typical Efficiency (%)74
IOUT Single (A)+ 20

Aerospace and Defense

IR's standard and custom power management solutions for commercial aircraft and defense applications are used in programs such as Airbus and Boeing airliners, the F16, the Eurofighter, the F35 Joint Strike Fighter and the Abrams M1A2 tank.

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IR has a long history of providing high-reliability, radiation hardened power management solutions for space flight with products used in over 2000 space programs from launchers to satellites to space exploration vehicles.

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Part # AFL27003R3S

AFL DC-DC converter with 270 Vin 3.3 Vout single output, 66W

Packaging OptionsPart NumberStatusStandard Pack Quantity
Case Y, ES level screeningAFL27003R3SY/ESOBSOLETE1
Case X, HB level screeningAFL273R3SX/HBBOBSOLETE1
Case X, ES level screeningAFL273R3SX/ESBACTIVE1
Case Y, ES level screeningAFL273R3SY/ESBCALL_FACTORY1
SMD Class K Qualified5962-99553ACTIVE1
Case W, ES level screeningAFL273R3SW/ESBACTIVE1
Case Z, ES level screeningAFL27003R3SZ/ESOBSOLETE1

Package Support