Manualshelf

Voltage Regulator-Down (VRD) 10.0

ManualsBrandsIntel ManualsOtherIntel Pentium 4 Processor supporting HT Technology 3.00E GHz, 1M Cache, 800 MHz FSB
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Input Voltage and Current
R
VRD Design Guide
39
4 Input Voltage and Current
4.1 Input Voltages (EXPECTED)
The main power source for the VRD is 12 V ±15%. This voltage is supplied by an AC DC power
supply through a cable to the motherboard. For input voltages outside the normal operating range,
the VRD should either operate properly or shut down.
4.2 Load Transient Effects on Input Current (EXPECTED)
The design of the VRD, which includes the input power delivery filter, must ensure that the
maximum slew rate of the input current does not exceed 1 A/µs, as specified for the ATX12V,
SFX12V, TFX12V (Thin Form Factor with 12-Volt Connector), CFX12V (Compact Form Factor
with 12-Volt Connector) and LFX12V (Low profile Form Factor with 12-Volt Connector) power
supplies.