MGDS-150-H-B ETC2 [List of Unclassifed Manufacturers], MGDS-150-H-B Datasheet - Page 15

• Manufacturer Part Number: MGDS-150-H-B
• Description: Hi-Rel DC/DC CONVERTER
• Manufacturer: ETC2 [List of Unclassifed Manufacturers]

©
Gaia Converter FC02-009.08/06 Revision N
14- Application Notes
14-1 Synchronization of Modules
The MGDM-150 low input series provides a synchronization
function trough the pin 2 (Synchro) to enable automatic
synchronisation between several converters.
If several converters are used, they lock themselves into
the highest switching frequency.
The synchronization signal available on pin 2 is referenced
to ground in (Gi) and the signal shape is the double of the
switching frequency (i.e 2x420KHz). It is a rectangular
signal with 3.5 Vp (+/-0.5V) amplitude with an impedance
of 4,7 KOhm on low level.
14-2 Connection of Modules in Series
The output of single output units can be connected in
series without any precautions to provide higher output
voltage level.
Nevertheless, GAIA Converter recommends to protect each
individual output by a low power shottky diode rated with
the maximum current of the converter to avoid reverse
polarity at any output.
Reverse polarity may occur at start up if the output volta-
ges do not rise at the same time.
14-3 Connection of Modules in Parallel
The MGDM-150 low input series features a «parallel
operation function» to increase the output power capability
of a single unit by connecting the outputs of 2 or more
converters in parallel. By connecting the «Share» pin of
each module together, the units will share the load current
equally within a few percent. Up to 5 converters can be
parallelized.
The «Share» signal is a DC voltage which varies between
0Vdc and 5Vdc referenced to «Sense -» and depending on
the output load.
For locations, phone, fax, E-Mail see back cover
MGDM-150 Low Input Series
On/Off
100µF
100µF
100µF
100µF
10nF
10nF
10nF
10nF
10nF
10nF
10nF
10nF
10nF
10nF
10nF
10nF
4
3
4
3
5
4
3
2
1
5
2
1
5
2
1
5
4
3
2
1
4
3
4
3
5
2
1
5
2
1
On/Off
On/Off
Share
Sync
On/Off
Share
Sync
Share
Sync
Vin
Gin
On/Off
Share
Sync
Vin
Gin
Vin
Gin
On/Off
Vin
Gin
On/Off
Share
Sync
Share
Sync
Vin
Gin
Vin
Gin
MGDM150
MGDM150
MGDM150
MGDM150
MGDM150
MGDM150
BP
BP
BP
BP
BP
BP
BP
BP
BP
BP
BP
BP
(*)
(*)
(*)
(*)
(*)
(*)
BP: Base Plate
BP: Base Plate
BP: Base Plate
Trim
Trim
Trim
Trim
Trim
Trim
Vo
S+
S-
Go
Vo
S+
S-
Go
Vo
S+
S-
Go
Vo
S+
Go
S-
Vo
S+
Go
Vo
S+
Go
S-
S-
10
10
10nF
10
10nF
10nF
6
10nF
10
6
6
7
8
9
7
8
9
6
7
8
9
10nF
10nF
10
10nF
10
7
8
9
10nF
10nF
10nF
6
7
8
9
6
7
8
9
10nF
10nF
Hi-Rel
Grade
4
15