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Intel ATX12VO - User Manual

Intel ATX12VO
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Document Number: 613768
ATX12VO (12V Only) Desktop
Power Supply
Design Guide
Revision 2.01
January 2023

Table of Contents

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Intel ATX12VO Specifications

General IconGeneral
Form FactorATX12VO
Power Good SignalYes
Main Output Voltage12V
Standby Voltage12VSB
Power OutputVaries by model
Efficiency Standard80 PLUS (Bronze, Silver, Gold, Platinum, Titanium)
Motherboard Connector10-pin
ConnectorsVaries by model (e.g., SATA, PCIe, etc.)
CompatibilityATX12VO compliant motherboards

Summary

Introduction

Power Supplies and Alternative Low Power Mode

Discusses requirements for power supplies supporting new low power states like ALPM.

System Power Telemetry Feature

Explains the power supply's ability to report the percentage of rated power used by the system.

Processor Configurations

Processor Configurations (Recommended)

Details the 12V2 power rail current requirements for desktop processors.

High End Desktop Market Processor Considerations

Addresses higher power needs for High-End Desktop (HEDT) market systems.

PCI Express* Add-in Card Considerations

PCIe* Add-in Card Power Excursions

Covers temporary high current demands beyond rated TDP for PCIe Add-in Cards.

PSU Power Excursion

Defines peak power requirements for power supplies based on PCIe* AIC excursions.

Electrical

AC Input - REQUIRED

Lists AC input voltage and frequency requirements for continuous operation.

DC Output (Required)

Details the +12V and +12VSB DC output voltage and current requirements.

Output Ripple Noise (Required)

Specifies maximum ripple and noise limits for DC outputs.

Output Protection

Over Voltage Protection (OVP) (Required)

Defines latch-mode over-voltage protection for all outputs.

Over Current Protection (OCP) (Required)

Outlines requirements for current limiting to ensure safe operation.

Mechanical

Connectors (Required)

Details pinouts and profiles for typical power supply DC harness connectors.

Airflow and Fans (Recommended)

Provides guidelines for power supply cooling solutions, including fan size and speed.

Safety

North America (Required)

Lists NRTL certification requirements for power supplies in USA and Canada.

Catastrophic Failure Protection (Recommended)

Specifies that power supply failures should not result in flame, smoke, or other hazards.

Reliability

Reliability - PS_ON# Toggle for S0 ix Mode (Required)

Addresses PSU reliability concerning frequent PS_ON# toggling for S0ix mode.

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