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Related Manuals for Intel ATX 0.9
Summary of Contents for Intel ATX 0.9
- Page 1 Intel ATX Power Supply Design Guide Version 0.9...
- Page 2 HER OWN RISK. THE USER OF THIS DOCUMENT HEREBY EXPRESSLY ACKNOWLEDGES THAT THE DOCUMENT IS PROVIDED AS IS, AND THAT INTEL CORPORATION (AND ANY CONTRIBUTOR) MAKES NO REPRESENTATIONS, EXTENDS NO WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED, ORAL OR...
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Page 3: Table Of Contents
Overvoltage Protection ...19 3.5.2 Short Circuit Protection...19 3.5.3 No Load Operation ...19 3.5.4 Overcurrent Protection...19 3.5.5 Output Bypass ...19 4. Mechanical Requirements ... 20 Labeling / Marking ...20 Physical Dimensions...20 Airflow / Fan...23 Intel ATX Power Supply Design Guide Version 0.9 Page... - Page 4 Intel ATX Power Supply Design Guide Version 0.9 AC Connector ...23 DC Connectors ...23 4.5.1 ATX Main Power Connector ...24 4.5.2 Auxiliary Power Connector (for 250 W and 300 W Configurations) ...25 4.5.3 Peripheral Connector(s)...25 4.5.4 Floppy Drive Connector ...25 5.
- Page 5 Intel ATX Power Supply Design Guide Version 0.9 Figures Figure 1: Power Supply Timing ...16 Figure 2: Power Supply Dimensions for Chassis in Which the P/S Does Not Cool Processor ...21 Figure 3: Power Supply Dimensions for Chassis in Which the P/S Cools the Processor...22 Figure 4: ATX Power Supply Connectors ...24...
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Page 6: Scope
Intel ATX Power Supply Design Guide Version 0.9 1. Scope This document outlines a reference ATX power supply that complies with the ATX Specification, Version 2.02 for motherboards and chassis. It is intended to provide additional power supply design information not detailed in the ATX 2.02 specification,... -
Page 7: Applicable Documents
Standard, Part 1: Residential, commercial and light industry. Radio frequency electromagnetic field test standard, Amplitude modulated. Radio frequency electromagnetic field-test standard, Keyed carrier. Radio frequency common mode test standard. Voltage dips and interruptions test standard. Intel ATX Power Supply Design Guide Version 0.9 Page... -
Page 8: Electrical Specification
Intel ATX Power Supply Design Guide Version 0.9 3. Electrical Specification The electrical requirements that follow are to be met over the environmental ranges specified in Section 5 unless otherwise noted. 3.1 AC Input Requirements The power supply shall be capable of supplying full rated output power over two input voltage ranges rated 100-127 VAC and 200-240 VAC RMS nominal. -
Page 9: Immunity
Mid-point of rated AC 50/60 Hz voltages Mid-point of rated AC 50/60 Hz voltages Intel ATX Power Supply Design Guide Version 0.9 Performance Criteria No loss of function or performance No loss of function or performance No loss of function or... - Page 10 Intel ATX Power Supply Design Guide Version 0.9 3.1.4.2.3 Ring Wave, ANSI C62.45-1992 The crest value of the first half peak of the injected oscillatory wave will be 3.0 kV open circuit, with 200 and 500 A short circuit currents for the common and the normal modes of transient surge injection, respectively.
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Page 11: Catastrophic Failure Protection
+11.40 +12.00 ±5% +4.75 +5.00 ±5% +3.14 +3.30 ±10% -4.50 -5.00 ±10% -10.80 -12.00 ±5% +4.75 +5.00 Intel ATX Power Supply Design Guide Version 0.9 Max. Unit +12.60 Volts +5.25 Volts +3.47 Volts -5.50 Volts -13.20 Volts +5.25 Volts Page... -
Page 12: Typical Power Distribution
Intel ATX Power Supply Design Guide Version 0.9 3.3 Typical Power Distribution Although power requirements and distributions will depend on the specific system options and implementation, this section identifies several potential configurations. For a single processor mini-tower configuration with one ISA slot, three PCI slots, one shared slot, and six peripheral bays, a minimum 160 W sustained (200 W peak) power supply should be sufficient for a typical application. -
Page 13: Power Limit
3.3 V & 5 V currents to the PCB. 10.0 12.0 30.0 +3.3VDC and +5VDC combined power 220 W Max 28.0 Pin 11 default +3.3 V sense required 0.72 See Section 3.4.3. Intel ATX Power Supply Design Guide Version 0.9 Page... -
Page 14: Output Ripple/Noise
Intel ATX Power Supply Design Guide Version 0.9 3.3.3 Output Ripple/Noise The following output ripple/noise requirements should be met throughout the load ranges specified in Section 3.3, and under all input voltage conditions as specified in Section 3.1. Ripple and noise are defined as periodic or random signals over a frequency band of 10 Hz to 20 MHz. -
Page 15: 5Vdc/+3.3Vdc Power Sequencing
The power supply shall maintain output regulation per Section 3.2.1 despite a loss of input power at the low-end nominal range (Low = 115 VAC, 57 Hz or 230 VAC, 47 Hz) at maximum continuous output load as applicable for a minimum of 17 ms. Intel ATX Power Supply Design Guide Version 0.9 Page... -
Page 16: Timing / Housekeeping / Control
Intel ATX Power Supply Design Guide Version 0.9 3.4 Timing / Housekeeping / Control PS_ON# +5VDC/+3.3VDC O/P PWR_OK PWR_OK Sense Level = 95% of nominal Notes: is defined in Section 3.4.5. , and T are defined in Table 9. 3.4.1 PWR_OK PWR_OK is a “power good”... -
Page 17: Ps_On
+5VDC and +3.3VDC outputs are within the regulation ranges specified in Section 3.2.1. The power-on time shall be less than 500 ms. +5VSB shall have a power-on time of 2 seconds maximum after application of valid AC voltages. Intel ATX Power Supply Design Guide Min. Max. 0.0 V 0.8 V... -
Page 18: Risetime
Intel ATX Power Supply Design Guide Version 0.9 3.4.5 Risetime The output voltages shall rise from <10% of nominal to within the regulation ranges specified in Section 3.2.1 within 0.1 ms to 20 ms (0.1 ms T 3.4.6 Overshoot at Turn-on/Turn-off The output voltage overshoot upon the application or removal of the input voltage, or the assertion/deassertion of PS_ON#, under the conditions specified in Section 3.1, shall be... -
Page 19: Output Protection
10 A/s starting from full load. 3.5.5 Output Bypass The output return may be connected to the power supply chassis. The return will be connected to the system chassis by the system components. Intel ATX Power Supply Design Guide Min. Nom. Max. -
Page 20: Mechanical Requirements
Intel ATX Power Supply Design Guide Version 0.9 4. Mechanical Requirements 4.1 Labeling / Marking Each supply shall be marked with the following, at minimum: Access warning text (“Do not remove this cover. Trained service personnel only. No user serviceable components inside.”) in English, German, Spanish, French, Chinese, and Japanese with universal warning markings. -
Page 21: Figure 2: Power Supply Dimensions For Chassis In Which The P/S Does Not Cool Processor
150 REF 4.0X6 (2X) 146.0 140 REF 138.0 See Note 4. 64.0 114.0 16.0 6.0 (2X) Processor Intel ATX Power Supply Design Guide Version 0.9 53 REF WIRE HARNESS 16 REF 20.0 (2X) Optional air inlet area. 86 REF 74.0 Page... -
Page 22: Figure 3: Power Supply Dimensions For Chassis In Which The P/S Cools The Processor
Intel ATX Power Supply Design Guide Version 0.9 11.0 x 5.0 cutouts (4X); min 6.0 clearance under cutout from inside top cover. No. 6-32 UNC-2B THREADED HOLE (4X) Notes; unless otherwise specified: 1. Dimensions are in mm. 2. Drawing is not to scale. -
Page 23: Airflow / Fan
The AC input receptacle should be an IEC 320 type or equivalent. In lieu of an additional switch, the IEC 320 receptacle may be considered the mains disconnect. 4.5 DC Connectors Figure 4 shows pinouts and profiles for typical ATX power supply DC harness connectors. Intel ATX Power Supply Design Guide Version 0.9 Page... -
Page 24: Atx Main Power Connector
Intel ATX Power Supply Design Guide Version 0.9 Pin 1 +3.3VDC +3.3VDC +5VDC +5VDC PWR_OK +5VSB +12VDC ATX Main Power Connector Figure 4: ATX Power Supply Connectors Listed or recognized component appliance wiring material (AVLV2), CN, rated min 85 °C, 300 VDC shall be used for all output wiring. -
Page 25: Auxiliary Power Connector (For 250 W And 300 W Configurations)
4.5.4 Floppy Drive Connector Connector: AMP 171822-4 or equivalent Signal +5VDC +12VDC 16 AWG Wire Black Black Black Orange Orange 18 AWG Wire Yellow Black Black 20 AWG Wire Black Black Yellow Intel ATX Power Supply Design Guide Version 0.9 Page... -
Page 26: Environmental Requirements
Intel ATX Power Supply Design Guide Version 0.9 5. Environmental Requirements 5.1 Temperature Operating ambient Nonoperating ambient (Maximum rate of change of 20 °C/hr.) 5.2 Thermal Shock (Shipping) Nonoperating 5.3 Humidity Operating Nonoperating 5.4 Altitude Operating Nonoperating 5.5 Mechanical Shock... -
Page 27: Random Vibration
0.02 g²/Hz from 20 Hz to 500 Hz. The area under the PSD curve is 3.13 gRMS. The duration shall be 10 minutes per axis for all three axes on all samples. Intel ATX Power Supply Design Guide Version 0.9 Page... -
Page 28: Electromagnetic Compatibility
Intel ATX Power Supply Design Guide Version 0.9 6. Electromagnetic Compatibility 6.1 EMI The power supply shall comply with CISPR 22, Class B, for both conducted and radiated emissions with a 4 dB margin. Tests shall be conducted using a shielded DC output cable to a shielded load. -
Page 29: Reliability
25 °C ambient. The calculated MTBF of the power supply shall be greater than 30,000 hours under the following conditions: Full rated load 120 VAC input Ground benign 50 °C ambient. Intel ATX Power Supply Design Guide Version 0.9 Page... -
Page 30: Safety Requirements
Intel ATX Power Supply Design Guide Version 0.9 8. Safety Requirements 8.1 North America The power supply must be certified by UL or CSA for use in the USA and Canada under the following conditions: The supply must be Recognized for use in Information Technology Equipment including Electrical Business Equipment per UL 1950, 3 deviations and CAN/CSA C22.2 no. -
Page 31: International
It is highly recommended that the CB report be issued by NEMKO. 8.3 Proscribed Materials Cadmium should not be used in painting or plating. No quaternary salt electrolytic capacitors shall be used. Intel ATX Power Supply Design Guide Version 0.9 edition + Page...