PRELIMINARY
®
MQPI-18
Typical Applications
• Military mobile and fixed communications
• Radar and Targeting
• Missile and Launch systems
• Airborne flight management systems
28 Volt Input, 7 Amp MIL COTS EMI Filter for V•I Chips
Description
The MQPI-18 attenuates conducted common-mode
(CM) and differential mode (DM) noise for 28 V input
MIL PRMs to comply with MIL-461E EMI requirements
for conducted noise measurements. The filter operates
within the full input operating range of a 28 V MIL
PRM and supports 7 A loads up to 60°C without
derating.
Assembly process compatibility
• Intended for Pb solder SMT assembly
• Compatible with typical aqueous cleaning
processes (open-frame only)
• Compatible with most conformal coating
compounds [after reflow] (open frame only).
Features
• 28 V input, compatible with MIL PRM
• MIL-STD-461E compliant* CE101, CE102, CS101,
CS114, C5115, and CS116
• 100 Vdc surge, 100 ms
• 1,500 Vdc hi-pot hold off to shield plane
• 7 A rating
• Efficiency >99%
• Low profile LGA package
• -55°C to 100°C operation (PCB Temp.)
• Pb solder construction
*When combined with MP028 PRMs, and MV036 VTMs
12.9 x 25.3 x 5 mm
Weight = 2.4 grams
Cy1
Bus+
Cbus
Bus+ Out+
Vi+
Cin
Vo+
Vi+
Vo+
Load
MQPI-18
QPI-12
Bus– Out–
Shield
PRM
Vi–
Vo–
VTM
Vi–
Vo–
Bus–
Shield
Cy2
Cin:
Recommended input capacitance per V
•
I Chip requirement.
Cy1 & Cy2:
4.7 nF, or recommended per V
•
I Chip requirement.
Cbus:
47 uF, 50 V electrolytic in parallel with 2.2 µF, 100 V ceramic.
Figure 1
–
MQPI-18
Typical application schematic
Figure 2
– MIL-STD-461, CE102 compliance with MQPI-18 using
28 V input MIL PRM and 12 V output MIL VTM
Picor Corporation • www.picorpower.com
MQPI-18 Data Sheet Rev. 1.0 Page 1 of 2
VICOR [ VICOR CORPORATION ]
