12:1 Ultra Wide Input
Dual Outputs
Metallic Case - 1 500 VDC Isolation
- Ultra wide input range MIL-STD-1275D/E
- Nominal dual output voltage from 5V to 48V
- High efficiency over the entire range (typ. 89%)
- Galvanic isolation 1.500 VDC according to EN 60950
- Integrated LC input filter
- Permanent short circuit protection
- External trim adjustment : -20/+10%
- No optocoupler for high reliability
1-General
The MGDD-20 ultra wide input series designates a full family of DC/DC power modules with a per-manent ultra wide input voltage range of 12-160 volts designed for use in distributed power architecture where variable input voltage for mul-tiple battery and transient are prevalent making them ideal particularly for avionics and military applications.
Also the MGDD-20 is compliant with the stringent requirements of MIL-STD-1275E standard that requires systems to sustain any 2 Joules injected spike that may occurs in less than 1ms, while the previous revision MIL-STD-1275D imposed only 15 milliJoules injected spikes.
Thanks to its 160 V maximum input voltage, the MGDD-20 series allows designer to sustain the MIL-STD-1275E spike with the simplest additional protection device : a 100V or higher TVS.
The serie includes dual output voltage choices | | |
individually isolated of 2 x 5 volts , 2 x 12 volts, 2 | | |
x 15 volts and 2 x 24 volts with easy configurability. | | |
All the modules are designed with LC network | | |
filters to minimize reflected input current ripple. | | |
The modules include a soft-start, an input | | |
undervoltage lock-out, a permanent short circuit | | |
protection and an output overvoltage limitation | 4 | |
to ensure efficient module protections. The soft- | |
| |
start allows current limitation and eliminates | | |
inrush current during start-up. The short circuit | | |
protection compley protects the modules | | |
against short-circuits of any duration by a shut- | | |
down and restores to normal when the overload | | |
is removed. | | |
The modules are potted with a bi-component ther- | | |
mal conductive compound to ensure optimum | | |
power dissipation under harsh environmental con- | | |
ditions. | | |
2-Product Selection
Single output model | : MGDD - 20 - | input | | | | | output | | / | option | |
|
Input Voltage Range | | | | | | Output |
| | | | | | | | | | | | |
Permanent | Transient | | C | : | 2 x 5 VDC |
| | | | | | | |
| | | | | | | | E | : | 2 x 12 VDC |
R : 12-160 VDC | 10,7 VDC / 1 s | | F | : | 2 x 15 VDC |
| | | | | | | | I | : | 2 x 24 VDC |
Options :
/T : option for -55°C start up operating temperature /S : option for screening and serialization
REDEFINING THE SOURCE OF POWER
© Gaia Converter FC015.069.02/15 Revision A For locations, phone, , see back cover
| Hi-Rel |
MGDD-20 Series | Grade |
2- Product Selection (continued)
Input range | | Output | | Current per Output |
| |
12-160 | VDC | | 2 x 5 VDC | | 2 A | |
12-160 | VDC | | 2 x 12 VDC | | 0,825 | A |
12-160 | VDC | | 2 x 15 VDC | | 0,65 A |
12-160 | VDC | | 2 x 24 VDC | | 0,425 | A |
| | | | | | |
Reference
MGDD-20-R-C MGDD-20-R-E MGDD-20-R-F MGDD-20-R-I
Options
/T, /S /T, /S /T, /S /T, /S
Using various parallel or series connections of outputs, and the 80/110% trim capability, allows to cover almost
the complete range of output voltages from 4V to 52V as shown in the table below.
Reference
MGDD-20-R-C MGDD-20-R-E MGDD-20-R-F MGDD-20-R-I
Parallel Connection | | Series Connection |
|
4 - 5,5 VDC | | 8 - 11 VDC |
9,6 - 13,2 VDC | | 19,2 | - 26,4 | VDC |
12 - 16,5 VDC | | 24 - 33 VDC |
19,2 - 26,4 VDC | | 38,4 | - 52,8 | VDC |
| | | | |
4
Converter Selection Chart
M G D D - 20 - R - C /
Number of Outputs :
D : double outputs
Input voltage range :
R : 12-160 VDC
Output voltage :
See table page 1
Option :
/T : -55°C start up operation /S : screening & serialization (consult application note «screening grades»)
© Gaia Converter FC15-069.02/15 Revision A
2
For locations, phone, , see back cover
| Hi-Rel |
MGDD-20 Series | Grade |
3- Electrical Specifications
Data are valid at +25°C, unless otherwise specified.
Parameter | Conditions | Limit or | Units | Dual Output | |
typical | MGDD-20 - R | |
| | | |
| | | | | |
Input | | | | | |
Nominal input voltage | Full temperature range | Nominal | VDC | 28 | |
| | | | | |
Permanent input | Full temperature range | Min. - Max. | VDC | 12-160 | |
voltage range (Ui) | Full load | |
| | | |
| | | | | |
Transient input voltage | Full load | Minimum | VDC/s | 10,7 / 1 | |
| | | | | |
Undervoltage lock-out | Turn-on voltage | Maximum | VDC | 11,8 | |
(UVLO) | Turn-off voltage | Maximum | VDC | 10,5 | |
| | | | | |
| Ui nominal within 3 ms | | | | |
Start up time | Nominal output | Maximum | ms | 30 | |
| Full load : resistive | | | | |
| | | | | |
Reflected ripple current | Ui nominal, full load at | Maximum | % Inom. | TBD | |
switching freq. BW = 20MHz | |
| | | | |
| | | | | |
No load input power | Ui nominal | Maximum | W | 1 | |
No load | |
| | | | |
| | | | | |
Standby input power | Ui nominal | Maximum | W | 1 | |
| | | | | |
Output | | | | | |
| Full temperature range | Nominal | VDC | 2 x 5 | |
| Nominal | VDC | 2 x 12 | |
Output voltage | Ui min. to max. | |
Nominal | VDC | 2 x 15 | |
| 75% load | |
| Nominal | VDC | 2 x 24 | |
| | |
| | | | | |
Set Point accuracy | Ambient temperature : +25°c | Maximum | % | +/- 2 | |
Ui nominal, 75% load | |
| | | | |
| | | | | |
Total output power with | Full temperature range | Maximum | W | 20 | |
both outputs | Ui min. to max. | |
| | | |
| | | | | |
Output current per output | | | | | |
5V output | Full temperature range | Nominal | A | 2,0 | |
12V output | Full load | Nominal | A | 0,825 | |
15V output | Ui min. to max. | Nominal | A | 0,65 | |
24V output | | Nominal | A | 0,425 | |
| | | | | |
Unbalanced output | Minimum load on V01 | Typical | W | 2 | |
for Vo2 proper operation | |
| | | | |
| | | | | |
Ripple output voltage ** | | | | | |
5V output | Ui nominal | Maximum | mVpp | 100 | |
12V output | Full load | Maximum | mVpp | 240 | |
15V output | BW = 20MHz | Maximum | mVpp | 300 | |
24V output | | Maximum | mVpp | 520 | |
| | | | | |
Output regulation * | Ui min. to max. | Maximum | % | +/- 1,5 | |
(Line + load + thermal) | 0% to full load | |
| | | |
| | | | | |
| Ui min. to max. | | | | |
Cross load output regulation | V01 at nominal load | Maximum | % | +/-2 | |
| V02 from 25% to full load | | | | |
| | | | | |
Output voltage trim | As a function of output voltage | Minimum | % | 80 | |
Maximum | % | 110 | |
| | |
| | | | | |
Maximum admissible | | | | | |
capacitive load | Ui nominal | | | | |
5V output | Maximum | µF | 2 200 | |
Full load | |
12V output | Maximum | µF | 820 | |
Per output | |
15V output | Maximum | µF | 680 | |
| |
24V output | | Maximum | µF | 470 | |
| | | | | |
Efficiency | Ui nominal | Typical | % | up to 89 | |