Intel EPS1U Power Supply User Manual


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SSI
EPS1U Power Supply Design Guide, V1.1
5 AC Input Requirements
STATUS
Required
The power supply shall incorporate universal power input with active power factor correction, which shall reduce
line harmonics in accordance with the EN61000-3-2 and JEIDA MITI standards.
5.1 AC Inlet Connector
STATUS
Required
The AC input connector shall be an IEC 320 C-14 power inlet. This inlet is rated for 15 A / 250 VAC.
5.2 AC Input Voltage Specification
STATUS
Required
The power supply must operate within all specified limits over the following input voltage range. Harmonic
distortion of up to 10% THD must not cause the power supply to go out of specified limits. The power supply shall
operate properly at 85 VAC input voltage to guarantee proper design margins.
Table 3: AC Input Rating
Parameter MIN Rated MAX MAX Input
Current
(125W)
MAX Input
Current
(250W)
MAX Input
Current
(350W)
MAX Rated Input
Current
(125W/250W/350W)
Voltage (110) 90 V
rms
100-127 V
rms
140 V
rms
2.4 A
rms
1,3
4.2 A
rms
1,3
5.9 A
rms
1,3
2.2 / 3.8 / 5.3A
rms
4
Voltage (220) 180 V
rms
200-240 V
rms
264 V
rms
1.2 A
rms
2,3
2.1 A
rms
2,3
3.0 A
rms
2,3
1.1 / 1.9 / 2.7 A
rms
4
Frequency 47 Hz 63 Hz
1. Maximum input current at low input voltage range shall be measured at 90VAC. A 125W output load shall be applied to the
125W version, a 250 W output load shall be applied for the 250 W version and a 350 W output load shall be applied to the
350 W version.
2. Maximum input current at high input voltage range shall be measured at 180 VAC. A 125W output load shall be applied to
the 125W version, a 250 W output load shall be applied for the 250 W version and a 350 W output load shall be applied to the
350 W version.
3. This is not to be used for determining agency input current markings.
4. Maximum rated input current is measured at 100 VAC and 200 VAC.
5.3 Input Under Voltage
STATUS
Required
The power supply shall contain protection circuitry such that application of an input voltage below the minimum
specified in section 5.2 shall not cause damage to the power supply.
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