
Intel ATX Power Supply Design Guide
Version 0.9
3. Electrical Specification
The electrical requirements that follow are to be met over the environmental ranges specified in Section 5 unless otherwise noted.
3.1 AC Input Requirements
The power supply shall be capable of supplying full rated output power over two input voltage ranges rated
Table 1: AC Input Line Requirements
Parameter | Min | Nom | Max | Unit | |
|
|
|
|
| |
Vin (115 VAC) | 90 | 115 | 135 | VACrms | |
Vin (230 VAC) | 180 | 230 | 265 | VACrms | |
Vin Frequency | 47 | 63 | Hz | ||
|
|
|
|
|
|
Iin | (115 VAC) |
|
| 7.0 | Arms |
|
|
|
|
|
|
Iin | (230 VAC) |
|
| 3.5 | Arms |
|
|
|
|
|
|
3.1.1 Input Overcurrent Protection
The power supply shall incorporate primary fusing for input overcurrent protection. Fuses should be
3.1.2 Inrush Current Limiting
Maximum inrush current from
3.1.3 Input Undervoltage
The power supply shall contain protection circuitry such that the application of an input voltage below the minimum specified in Section 3.1, Table 1, shall not cause damage to the power supply.
Page 8