ATX12V Power Supply Design Guide
Version 2.0
3. Electrical
The electrical requirements that follow are to be met over the environmental ranges specified in Section 5 unless otherwise noted.
3.1. AC Input
Table 1 lists AC input voltage and frequency requirements for continuous operation. The power supply shall be capable of supplying
Table 1. AC Input Line Requirements
Parameter | Minimum | Nominal+ | Maximum |
|
|
|
|
Vin (115 VAC) | 90 | 115 | 135 |
Vin (230 VAC) | 180 | 230 | 265 |
Vin Frequency | 47 | 63 | |
|
|
|
|
+Note: Nominal voltages for test purposes are considered to be within ±1.0 V of nominal.
Unit
VAC rms
VAC rms
Hz
3.1.1. Input Over-current Protection
The power supply shall incorporate primary fusing for input
3.1.2. Inrush Current Limiting
Maximum inrush current from
‡. For Denmark and Switzerland international safety requirements, if the internal
9