MQBQ-28-28B
Single Output
HigH Reliability DC-DC ConveRteR
18-40V
16-50V
28V
400W
94.5%@7A / 95.3%@14A
Continuous Input
Transient Input
Output
Output
Efficiency
opeRation: -55ºC to +125ºC
The MilQor series of high-reliability DC-DC converters
®
brings SynQor's field proven high-efficiency synchronous
rectifier technology to the Military/Aerospace industry.
TM
SynQor's innovative QorSeal
packaging approach ensures
survivability in the most hostile environments. Compatible
with the industry standard format, these converters operate
at a fixed frequency, have no opto-isolators, and follow
conservative component derating guidelines. They are
designed and manufactured to comply with a wide range of
military standards.
Design Process
MQBQ series converters are:
D
f
esigneD & ManufactureD in the usa
™
• Designed for reliability per NAVSO-P3641-A guidelines
• Designed with components derated per:
— MIL-HDBK-1547A
eaturing
Qor
seal
hi
-rel
a
sseMbly
Features
— NAVSO P-3641A
• Fixed switching frequency
• No opto-isolators
Qualification Process
• Parallel operation with droop current share
• Clock synchronization
• Continuous short circuit and overload protection
• Input under-voltage and over-voltage shutdown
MQBQ series converters are:
• MIL-STD-810F
— 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
Specification Compliance
In-Line Manufacturing Process
MQBQ series converters are:
• MIL-HDBK-704-8 (A through F)
• RTCA/DO-160 Section 16
• MIL-STD-1275
• DEF-STAN 61-5 (part 6)/5
• MIL-STD-461 (C, D, E)
• RTCA/DO-160 Section 22
• AS9100 and ISO 9001:2008 certified facility
• Full component traceability
• Temperature cycling
• Constant acceleration
• 24, 96, 160 hour burn-in
• Three level temperature screening
Product # MQBQ-28-28B
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0006227 Rev. 1
03/28/12
Page 1