Spire JEWEL 550W / SP-ATX-550W-PFC - Manual (Page 3)

Version:A/0 Page 3 of 17
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Contents
1 Introduction………………………………………………………………5
1.1 Scope………………………………………………………………………5
1.2 General Description………………………………………………….……5
2 Electrical………………………………………………………………………5
2.1 AC Input…………………………………………………..………………5
2.1.1 Input Over current Protection……………………………………5
2.1.2 Inrush Current Limiting…………………………….………………6
2.1.3 Withstand Voltage……………………………......……………...6
2.1.4 Catastrophic Failure Protection……………………….…………..6
2.2 DC Output……………………………………………………….…………6
2.2.1 DC Voltage Regulation……………….……………………………6
2.2.2 Output DC Current Ranges……….………………………………7
2.2.3 Output Voltage Line Regulation. ………………..………….….…7
2.2.4 Cross Regulation…………………………………..……………….7
2.2.5 Efficiency ………………………………………………..................7
2.2.6 Output Ripple/Noise………………………………………………..8
2.2.7 Output Transient Response…………...…………………………..9
2.2.8 Capacitive Load …………………………………………………….9
2.2.9 Closed-loop Stability ……………………………………………….9
2.2.10 Power Sequencing………………………………………………...9
2.2.11 Voltage Hold-up Time…………………………………..………10
2.3 Timing / Housekeeping / Control…………………….…………………..10
2.3.1 PWR_OK……………………………………….…………………10
2.3.2 PS_ON#…………………………………………………..………11
2.3.3 +5VSB……………………..……………….……………….……11
2.3.4 Power-on Time…………………………………...………………11
2.3.5 Rise time………………………………………………………..…11