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General| Brand | Intel |
|---|---|
| Model | ATX 3.0 |
| Category | Computer Hardware |
| Language | English |
Discusses requirements for new power states like ALPM, covering load levels and timing.
Lists documents referenced in the guide, such as standards and regulations.
Defines acronyms, conventions, and terminology used throughout the design guide.
Specifies 12V2 current requirements based on CPU TDP for desktop systems.
Discusses higher power needs for HEDT market and references EPS12V specification.
Recommends modular design and discusses connector types for flexibility.
Advises on providing higher 12V power for processors intended for overclocking.
Details power excursion allowances for PCIe cards per Rev 5.0.
Discusses power demands from CPU and PCIe Add-in Cards for system provisioning.
Defines ROP and provides examples for PSU power rating to balance system demands.
Defines peak power requirements and excursion limits for PSUs with 12VHPWR.
Covers the three 12V Auxiliary Power Connectors for PCIe Add-in Cards.
Details the four sideband signals for 12VHPWR connectors.
Explains the purpose of SENSE0/SENSE1 signals for power reporting.
Describes the optional CARD_PWR_STABLE signal for fault detection.
Details the CARD_CBL_PRES# signal for card detection.
Provides DC specifications for 12VHPWR sideband signals.
Defines AC input voltage and frequency requirements for operation.
Specifies primary fusing for input over current protection.
Limits inrush current from power-on to prevent damage.
Requires protection circuitry for input under voltage conditions.
Defines DC output voltage and current requirements.
Specifies DC output voltage regulation ranges.
Summarizes expected output transient step sizes for each output.
Recommends remote sensing for accurate motherboard load control.
Details +5VSB standby rail efficiency for energy regulations.
Defines output ripple and noise requirements.
Specifies required capacitances for power-up operation.
Requires unconditional stability under various load conditions.
Defines power sequencing rules for +5V and +3.3V outputs.
Specifies minimum hold-up time after AC power loss.
Defines minimum current requirements for the 12V2 rail.
Covers timing, housekeeping, and control signals for power supplies.
Explains the PWR_OK 'power good' signal.
Specifies conditions for cross-loading during power-up.
Details the PS_ON# signal for remote power control.
Describes the +5VSB standby output active during AC presence.
Defines the time for outputs to reach regulation ranges after PS_ON#.
Specifies the time for output voltages to rise from 10% to 90%.
Limits output voltage overshoot during transitions.
Defines behavior after a fault condition and shutdown.
Specifies +5VSB behavior after AC power removal.
Recommends fall time for +5VSB after AC power removal.
Covers various output protection mechanisms.
Details over voltage protection requirements.
Specifies short circuit protection requirements.
Ensures no damage or hazards without load.
Details over current protection and latching behavior.
Specifies over-temperature protection sensor and behavior.
Describes connection of output return to chassis.
Optional separate current limit for 12V2 rail.
Defines efficiency testing at various load conditions.
Details efficiency requirements for ENERGY STAR and CEC.
Lists suggested markings for power supply units.
Details AC and DC connector requirements.
Specifies the AC input receptacle type.
Introduces pin-outs for DC power connectors.
Details the 24-pin main power connector pin-out.
Specifies connectors for peripheral devices.
Mentions floppy drive connector is for historical reference only.
Covers optional connectors for PCIe Add-in Cards.
Details the 2x3 connector for 75W PCIe cards.
Details the 2x4 connector for 150W PCIe cards.
Details the 12VHPWR connector for up to 600W.
Details the 4-pin and 8-pin +12V power connectors.
Specifies required connectors for Serial ATA devices.
Discusses fan location, direction, size, and speed for cooling.
Guidelines on fan placement for optimal airflow.
Recommends fan speed control for thermal and acoustic balance.
Guidelines for case venting to manage airflow and noise.
Recommends meeting acoustic targets using appropriate fans and control.
Defines operating and non-operating temperature ranges.
Specifies requirements for thermal shock during shipping.
Defines operating and non-operating humidity limits.
Specifies operating and non-operating altitude limits.
Defines requirements for mechanical shock resistance.
Specifies random vibration requirements for non-operation.
Details FCC and CISPR compliance for emissions.
Specifies EN 55024 and CISPR 24 compliance for immunity.
Addresses Class D harmonic limits for input line current.
Ensures PFC choke leakage field does not interfere with monitors.
Specifies limits for voltage fluctuations and flicker per EN61000-3-3.
Outlines NRTL certification requirements for USA/Canada.
Details CB certificate and test report requirements for IEC 60950-1.
Lists materials that must not be used in manufacturing.
Recommends protection against failure modes like flame or smoke.
Recommends de-rating for quality and reliability of components.
Recommends PS_ON# toggling for S0ix mode power saving.
Specifies physical outline requirements for CFX12V.
Specifies physical outline requirements for LFX12V.
Specifies physical dimensions for SFX12V lower profile package.
Details fan requirements for SFX12V.
Specifies physical dimensions for SFX12V top fan mount.
Details fan requirements for SFX12V top fan mount.
Specifies physical dimensions for SFX12V reduced depth top mount fan.
Details fan requirements for SFX12V reduced depth top mount fan.
Specifies physical dimensions for SFX12V standard profile package.
Details fan requirements for SFX12V standard profile package.
Specifies physical dimensions for SFX12V PS3 form factor.
Details fan requirements for SFX12V PS3 form factor.
Specifies physical dimensions for TFX12V.
Provides two options for mounting TFX12V PSUs in a chassis.
Lists features to design into chassis for TFX12V PSU integration.
Specifies physical dimensions for Flex ATX.
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