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MIL-STD-461-C INPUT FILTER DC/DC Converters 9501
comply with MIL-STD-461-C power leads Emission requirement over Susceptibility requirement over 30Hz 50KHz Susceptibility requirement over 50KHz 400MHz Susceptibility Current range Reverse polarity protection Components Small surface (0.8" Temperature range -55°C/+105°C
1-Subject
front filter KG9501 enables Gaia Converter DC/DC modules preregulators front-end modules below power fully compliant with MIL-STD-461-C Part standard follow CE03, class narrowband
CE03, class broadband, curve# CS01, class consult factory criteria CS02, class CS06, class spike
This front filter compatible with GAIA Converter DC/DC modules with family input range (16-40 Vdc) family input range (9-36 Vdc), with pre-regulator PGDS-50 series drive input current. This front filter KG9501 components follow.
Components
Diode TO-220 format, BYW29-200 SGS-Thomson Philips Common mode choke Fair-rite type 2744041447 equivalent Ferroxcube CMS2-5.6/3/4.8-4S2 (replacement obsolete Philips type 12NC433003036881) Ferrite bead Fair-rite type 2743021447 equivalent Ferroxcube type 3/3/8.9-3S1 (replacement obsolete Philips type 12NC43300303645) Ferrite bead Fair-rite type 2743021447 better performances differential mode inductance Coilcraft type DO3316P-472 (both components provided GAIA Converter kit.) C4*: 10µF tantalum capacitor, 7343D 10µF 293D serial package CTC3 type 1206 ceramic capacitor, 100nF/50 type Vishay reference VJ1206Y104MXAT reference C3216x7R1H104KT 0805 resistor, 150V 0.125W
Note choice capacitor rating values depends level transients required (i.e 60V, 100V) REDEFINING SOURCE POWER
Gaia Converter FC97-003.04/05 Revision
locations, phone, fax, E-Mail back cover
KG9501 Series Schematic
front filter KG9501 used either directly front GAIA Converter DC/DC modules assembly DC/DC modules power
front GAIA Converter pre-regulator PGDS-50 series.
Both schematics resumed hereafter.
Connection GAIA Converter DC/DC Converter
Input
MGDM-Series
Input
*Chassis ground
Common mode noise capacitance 10nF (See note below)
Notes suggested common mode capacitor nF/1.500V) increase performance. This capacitor should layed-out close possible from DC/DC converter. connection chassis ground, higher isolation required, suggested 10nF with voltage rating compliant with application requirements capacitors
Connection GAIA Converter Pre-regulator PGDS-50 DC/DC Converters
MGDM-Series Input Input *Chassis ground
Pre-regulator PGDS-50-M-K
MGDM-Series
MGDM-Series
Common mode noise capacitance 10nF (See note below)
Notes suggested common mode capacitor nF/1.500V) each DC/DC converter increase performance. This capacitor should layed-out close possible from DC/DC converter. connection chassis ground, higher isolation required, suggested 10nF with voltage rating compliant with application requirements capacitors
Gaia Converter FC97-003.04/05 Revision
locations, phone, fax, E-Mail back cover
KG9501 Series Component Dimensions
Differential Mode Inductance Implementation Dimensions (L3)
Ferrite Bead Implementation Dimensions (L2)
Conductor Figure herabove 1.27 (.050) wide (.008) thick flat
Impedance Impedance Impedance @100MHz 95±20% (mm/in) 2.85±0.2 .112 (mm/in) (mm/in) (mm/in) (mm/in) (mm/in) 1.5±0.5 .059 .177 .295
(mm/in)
TapeWidth Parts Reel (mm/in) .118 .629 2800
3.05±0.1 9.6-0.95 .120 .359
.071
Bold numbers light numbers inch
Common Mode Choke Implementation Dimensions (L1)
Internal Pattern
Impedance 16min
Impedance @100 33±20%
(mm/in) 2.85±0.2 .112
(mm/in) 5.6±0.2 .220
(mm/in) 5.0-0.6 .185
(mm/in) 1.35±0.25 .053
(mm/in) 2.54±0.1
(mm/in) (mm/in) .O40 .157
(mm/in)
TapeWidth Parts Reel (mm/in) (mm/in) .118 2.54 .100 .472 2400
.071
Bold numbers light numbers inch
Gaia Converter FC97-003.04/05 Revision
locations, phone, fax, E-Mail back cover
KG9501 Series Lay-out Recommendation
Grounding Design
GAIA Converter recommend four layer boards. outer layers will used power ground planes, inner layers levels signals. Where necessary, extra planes beef-up high current paths added inner layers. recommend that layer, located closest modules, used ground planes divided into parts follow primary ground part, divided into sub-parts (see KG9501 datasheet further information) secondary ground parts, Both parts must large possible spread over entire surface board; grid could used avoid complete copper surface. GAIA Converter recommend decoupling common mode noise capacitance (10nF) between primary secondary ground planes. more than module used, additionnal common mode noise capacitance recommended. modules available) connected either primary secondary ground plane sides shielding achieved with ground plane.
Component Trace Routing Design
component placement also factor between good result nightmare. first step placing component determine power flow through board. most popular flow structure from side board other avoiding cross-overs. more than DC/DC modules used recommended place modules side-by-side that power signals easily routed avoiding croos-overs. also recommended leave inch between each module avoid that radiation from power stage module affect control stage adjacent module cause cross-talk. second step place filter (KG9501 other) next close possible modules minimizing trace lenghts avoid phenomenum minimize loop areas straight inductances that limit effectiveness filter. When placing theses components make sure leave enough room power carrying traces through. Please consult also KG9501 datasheet additionnal routing information.
Secondary Ground Plane Ground Input KG9501 PGDS-50 Vout Gout
Vout Primary Ground Plane Ground Ground Input Gout Primary Ground Plane Primary Ground Plane Ground Common mode noise capacitance
locations, phone, fax, E-Mail back cover
Gout Primary Ground Plane Common mode noise capacitance Plated hole
Secondary Ground Plane Vout
Plated hole
Gaia Converter FC97-003.04/05 Revision
KG9501 Series Emission Level CE03 Results
Emission Level CE03 Results with Single Module Single module without filter
Single module with front filter KG9501
(MGDS-04-J-C module)
(MGDS-04-J-C module)
Single module without filter
Single module with front filter KG9501
(MGDS-10-J-C module)
(MGDS-10-J-C module)
Emission Level with Multiple Module Architecture Filtered KG9501 Module architecture stand alone Module architecture with front filter KG9501
Gaia Converter FC97-003.04/05 Revision
locations, phone, fax, E-Mail back cover
more detailed specifications applications information, contact
Printed France GAIA Converter Gaia Converter FC97-003.04/05 Revision Graphisme Philippe Clicq
International Headquarters Marketing Sales department Converter France Address B.P. 33186 HAILLAN FRANCE Tel. (33)-5-57-92-12-80 (33)-5-57-92-12-89
North American Headquarters Converter Canada, Address 6611 Thimens ST-LAURENT, QUEBEC CANADA Tel. (514)-333-3169 (514)-333-4519
Represented
Information given this datasheet believed accurate reliable. However, responsibility assumed consequence infringement patents other rights third parties which result from use. These products sold only according GAIA Converter general conditions sale, unless otherwise confirmed writing. Specifications subject change without notice.
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