Data are valid at +25°C, unless otherwise specified.
Parameter
Input
Nominal input voltage
Permanent input
voltage range (Ui)
Extended permanent input
voltage range
Transient input voltage
Start up input voltage
Undervoltage lock-out
Start up time
Reflected ripple current
Input current in short circuit
mode (Average)
No load input current
Output
Output voltage *
Full temperature range
Ui min. to max.
75% load
Ambient temperature : +25°c
Ui nominal, 75% load
Full temperature range
Ui min. to max.
Full temperature range
Ui min. to max.
Nominal
Nominal
Nominal
Nominal
Maximum
Maximum
Maximum
Maximum
Maximum
Maximum
Maximum
Maximum
Maximum
Typical
Typical
Typical
VDC
VDC
VDC
VDC
%
W
A
A
A
A
mVpp
mVpp
mVpp
%
%
%
3,3
5
12
15
+/- 2
20
4
4
1,5
1,2
50
100
150
+/- 1
+/- 2,5
81
3,3
5
12
15
+/- 2
20
4
4
1,5
1,2
50
100
150
+/- 1
+/- 2,5
82
3,3
5
12
15
+/- 2
20
4
4
1,5
1,2
50
100
150
+/- 1
Full temperature range
Full temperature range
Full temperature range
(Consult factory)
Full load
No undervoltage lock-out
turn-on/turn-off threshold
Ui nominal
Nominal output
Full load : resistive
Ui nominal, full load at
switching freq. BW = 20MHz
Ui nominal
Short-circuit
Ui nominal
No load
Nominal
Min. - Max.
Min. - Max.
Maximum
Maximum
Minimum
Min. - Max.
Maximum
Typical
Maximum
Maximum
VDC
VDC
VDC
VDC/S
VDC/S
VDC
VDC
ms
mApp
mA
mA
9
4,7-16
/
/
/
/
4-4,5
50
50
100
100
20
9-36
/
40/0,1
/
/
7-8,5
50
50
60
60
24
16-40
16-45
Conditions
Limit or
typical
Units
Industrial
Grade
Single Output MGDSI-18
18-D
18 - H
18 - J
18 - Q
72
36-140
36-154
175/0,1
165/1
33
/
50
50
40
40
45/0,1
/
/
12-15
50
50
60
60
3,3
5
12
15
+/- 2
20
4
4
1,5
1,2
50
100
150
+/- 1
+/- 2,5
83
Set Point accuracy
Output power
Output current **
3,3V output
5V output
12V output
15V output
Ripple output voltage ***
3,3V and 5V output
12V output
15V output
Line regulation
Load regulation ****
Efficiency
Maximum admissible
Capacitive load
3,3V and 5V output
12V and 15V output
5
Ui nominal
Full load
BW = 20MHz
Ui min. to max.
Full load
Ui nominal
25% to full load
Ui nominal
Full load
Ui nominal
Full load
Per output
+/- 2,5
83
Maximum
Maximum
µF
µF
2 000
680
2 000
680
2 000
680
2 000
680
Note * : For proper operation the MGDI-18 module requires to install a 22µF chemical or tantalum capacitance accross output terminals.
Note ** : For 9-36V input range, the current is derated at 80% at 9V and increases linearly to full current at 12V.
Note ***: The ripple output voltage is the periodic AC component imposed on the output voltage, an aperiodic and random component (noise) has also to be considered.
This noise can be reduced by adding an external capacitor (typically 10nF/ rated voltage depending on isolation requirement) connected between the pin Gin and the pin
Gout of the converter. This capacitor should be layed-out as close as possible from the converter.
Note **** : For load regulation characteristics from 0% to full load, please contact factory.
Electromagnetic interference requirements according to EN55022 class A and class B can be easily achieved as indicated in
the following table :
Electromagnetic Interference according to EN55022
Configuration
Models
Conducted
noise
emission
4,7-16V input models
9-36V input models
16-40V input models
36-140V input models
Radiated
noise
emission
Configuration
Models
All models
Class B
With common mode capacitor
C
c
= 10nF and input capacitor C
With common mode capacitor
C
c
= 10nF and external filter
Class B
Class B
Class B
/
i
Class A, C
i
=10µF/ 35 V tantalum + inductance 4,7mH
Class A, C
i
=4,7µF/ 50 V tantalum
Class A, C
i
=4,7µF/ 50 V tantalum
Class A, C
i
=47µF / 200 V chemical
With common mode capacitor C
c
= 10 nF
8-1 Module Compliance with EN55022 class A Standard
Electromagnetic interference requirements according to
EN55022 class A can be easily achieved by adding an
external common mode noise capacitance
(C = 10nF/rated voltage depending on isolation
C
requirement) and an input capacitance (C
I
Value explained
in previous table). This common mode noise capacitance
C should be layed-out as close as possible from the DC/
DC converter.
C
+ Input
Input capacitance C
i
- Input
Vi
Vo
MGDI - Series
Gi
Go
5
Common mode noise capacitance C c = 10nF
8-2 module Compliance with EN 55022 Class B Standard
Electromagnetic interference requirements according to
EN55022 class B can be easily achieved by adding an
external input filter consisting of 4 capacitances, a common
mode choke, a differential mode inductance
and the common mode noise capacitance (C = 10nF/rated
voltage depending on isolation requirement).
Please consult EN55022 Class B EMI Filter design note for
further details.
C
L1
+ Input
C1
- Input
L2
C3
Vi
C2
Vo
MGDI - Series
Gi
C4
Common mode noise capacitance C c = 10nF
Go
* Note : Value of common mode noise capacitance depends on isolation requirements (typically 10nF/1500V or 10nF/3000V ). In case of dielectric strengh test in AC mode,
adapt the capacitance value in order to be compatible with maximum admissible leakage current.
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