MQFL-28-7R7S DC-DC Converter





90% @ 8A / 89% @ 16A

Continuous Input

Transient Input




Product Details

The MQFL-28-7R7S model is a version of the MQFL-28-7R5S model, where the unit has been factory trimmed to 7.7Vout nominal instead of 7.5Vout. The only change made to the design is the adjustment of the resistor ladder which sets the output voltage. As such, the module behaves as a MQFL-28-7R5S model trimmed to a new output voltage. Note that the available voltage range for output voltage trimming and remote sense drops is unchanged from the base model. Consult factory for details.

Operational Features

• Fixed switching frequency
• No opto-isolators
• Parallel operation with current share
• Remote sense
• Clock synchronization
• Primary and secondary referenced enable
• Continuous short circuit and overload protection
• Input under-voltage and over-voltage shutdown

Specification Compliance Features

MQFL series converters (with MQME filter) are designed to meet:
• MIL-HDBK-704-8 (A through F)
• RTCA/DO-160 Section 16, 17, 18
• MIL-STD-1275 (B, D)
• DEF-STAN 61-5 (part 6)/(5, 6)
• MIL-STD-461 (C, D, E, F)
• RTCA/DO-160(E, F, G) Section 22

Compliance Features

MQFL series converters are qualified to:
— consistent with RTCA/D0-160E
• SynQor’s First Article Qualification
— consistent with MIL-STD-883F
• SynQor’s Long-Term Storage Survivability Qualification
•SynQor’s on-going life test

Design Process

MQFL series converters are:
•Designed for reliability per NAVSO-P3641-A guidelines
• Designed with components derated per:
— MIL-HDBK-1547A
— NAVSO P-3641A

Manufacturing Process

• AS9100 and ISO 9001 certified facility
• Full component traceability
•Temperature cycling
• Constant acceleration
•24, 96, 160 hour burn-in
• Three level temperature screening