1 Function Description
DC/DC ATX power supply for automobile application, 6-30VDC input, +5V,+12V,+3.3V,-12V,+5VSB and PG (power good signal) outputs.
2 Operation Environment
|
Item |
Unit |
Minimum |
Typical |
Maximum |
Test Conditon |
|
Temperature |
? |
-20 |
|
50 |
|
|
RH |
%RH |
40 |
|
90 |
No Condensation |
3 Technique Requirement
3.1 Input Characteristic
|
Item |
Unit |
Minimum |
Typical |
Maximum |
Test Conditon |
|
DC INPUT |
Vdc |
6 |
12/24 |
30 |
|
|
Input Current |
A |
|
5/10 |
|
|
|
| |||||
3.2 Output Characteristic
3.2.1 Output Voltage Regulation
|
Output |
Min. Load |
Max. Load |
Peak Load |
Output Voltage range |
Ripple(pk-pk)(rated load?20MHz limit)* |
|
+5V |
0.5A |
6A |
8A |
4.75~5.25V |
50mV |
|
+12V |
0.3A |
3A |
|
11.40~12.60V |
120mV |
|
+3.3V |
0.5A |
6A |
8A |
3.14~3.55V |
50mV |
|
-12V |
0A |
0.1A |
|
-11.0~-13.2V |
120mV |
|
+5VSB |
0.1A |
2A |
|
4.75~5.25V |
100mV |
*: Need 0.5m/s air flow fan cooling .
3.2.2 Others Output Characteristics
|
Item |
Unit |
Minimum |
Typical |
Maximum |
Test Conditon |
|
Output Power |
W |
|
120 |
|
DC output power |
|
Efficiency |
% |
|
90 |
|
Rated load |
|
|
|
|
|
|
|
|
Turn on Overshoot |
% |
|
|
10 |
|
|
Rise Time |
ms |
|
20 |
|
Output voltage up from 0% to 95%,rated load |
|
Hold up Time |
ms |
|
2 |
|
Rated load |
3.3 EMC Requirement
|
Item |
Request |
Standard |
Judgement Grade |
|
Conducted interference |
CLASS B, 3dB margin |
EN55022 |
Ensure system pass the CLASS B and have 3dB margin |
|
Radiation interference |
CLASS B, 3dB margin |
EN55022 |
Ensure system pass the CLASS B and have 3dB margin |
3.4 Protection Function
|
Item |
Unit |
Yes/No |
Minimum |
Typical |
Maximum |
Recovery Characteristic |
|
Input invertion protection |
|
Yes |
|
|
|
|
|
+5V OVP |
V |
Yes |
5.8 |
|
6.8 |
Latched, need to re-apply DC input to recovery |
|
+12V OVP |
V |
Yes |
13.2 |
|
15.6 |
Latched |
|
+3.3V OVP |
V |
Yes |
3.9 |
|
4.3 |
Latched |
|
Short CircuitProtection(+5V,+12V,+3.3V) |
|
Yes |
|
|
|
Lached |
