User manual ENHANCE EPS12V V1.6

[. . . ] SSI EPS12V Power Supply Design Guide A Server System Infrastructure (SSI) Specification For Entry Chassis Power Supplies Version 1. 6 SSI EPS12V Power Supply Design Guide, V1. 6 -2- SSI EPS12V Power Supply Design Guide, V1. 6 Disclaimer: THIS SPECIFICATION IS PROVIDED "AS IS" WITH NO WARRANTIES WHATSOEVER, INCLUDING ANY WARRANTY OF MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR ANY PARTICULAR PURPOSE, OR ANY WARRANTY OTHERWISE ARISING OUT OF ANY PROPOSAL, SPECIFICATION OR SAMPLE. WITHOUT LIMITATION, THE PROMOTERS (Intel Corporation, NEC Corporation, Dell Computer Corporation, Data General a division of EMC Corporation, Compaq Computer Corporation, Silicon Graphics Inc. , and International Business Machines Corporation) DISCLAIM ALL LIABILITY FOR COST OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, LOST PROFITS, LOSS OF USE, LOSS OF DATA OR ANY INCIDENTAL, CONSEQUENTIAL, DIRECT, INDIRECT, OR SPECIAL AMAGES, WHETHER UNDER CONTRACT, TORT, WARRANTY OR OTHERWISE, ARISING IN ANY WAY OUT OF USE OR RELIANCE UPON THIS SPECIFICATION OR ANY INFORMATION HEREIN. The Promoters disclaim all liability, including liability for infringement of any proprietary rights, relating to use of information in this specification. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted herein. This specification and the information herein is the confidential and trade secret information of the Promoters. Use, reproduction and disclosure of this specification and the information herein is subject to the terms of the S. S. I. [. . . ] A 450 W output load shall be applied for the 450 W version and a 550 W output load shall be applied to the 550 W version. Maximum input current at high input voltage range shall be measured at 180 VAC. A 450 W output load shall be applied for the 450 W version and a 550 W output load shall be applied to the 550 W version. This is not intended to be used for determining agency input current markings. Maximum rated input current is measured at 100 VAC and 200 VAC. 2 3 4 - 10 - SSI EPS12V Power Supply Design Guide, V1. 6 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. 5. 4 Efficiency STATUS Required The power supply shall have a minimum efficiency of 68% at maximum load and over the specified AC voltage. 5. 5 AC Line Dropout STATUS Required An AC line dropout is defined to be when the AC input drops to 0 VAC at any phase of the AC line for any length of time. During an AC dropout of one cycle or less the power supply must meet dynamic voltage regulation requirements over the rated load. An AC line dropout of one cycle or less shall not cause any tripping of control signals or protection circuits. If the AC dropout lasts longer than one cycle, the power supply should recover and meet all turn on requirements. The power supply must meet the AC dropout requirement over rated AC voltages, frequencies, and output loading conditions. Any dropout of the AC line shall not cause damage to the power supply. 5. 6 AC Line Fuse STATUS Required The power supply shall incorporate one input fuse on the LINE side for input over-current protection to prevent damage to the power supply and meet product safety requirements. Fuses should be slow blow type or equivalent to prevent nuisance trips. AC inrush current shall not cause the AC line fuse to blow under any conditions. All protection circuits in the power supply shall not cause the AC fuse to blow unless a component in the power supply has failed. This includes DC output load short conditions. - 11 - SSI EPS12V Power Supply Design Guide, V1. 6 5. 7 AC Inrush STATUS Required The power supply must meet inrush requirements for any rated AC voltage, during turn on at any phase of AC voltage, during a single cycle AC dropout condition, during repetitive ON/OFF cycling of AC, and over the specified temperature range (Top). The peak inrush current shall be less than the ratings of its critical components (including input fuse, bulk rectifiers, and surge limiting device). STATUS Recommended An additional inrush current limit is recommended for some system applications that require multiple systems on a single AC circuit. AC line inrush current shall not exceed 50 A peak for one-quarter of the AC cycle, after which, the input current should be no more than the specified maximum input current from Table 2. 5. 8 AC Line Transient Specification STATUS Recommended AC line transient conditions shall be defined as "sag" and "surge" conditions. Sag conditions (also referred to as "brownout" conditions) will be defined as the AC line voltage dropping below nominal voltage. Surge will be defined as the AC line voltage rising above nominal voltage. The power supply shall meet the requirements under the following AC line sag and surge conditions. Table 3: AC Line Sag Transient Performance AC Line Sag Duration Continuous 0 to 1 AC cycle >1 AC cycle Sag 10% 100% Operating AC Voltage Nominal AC Voltage ranges Nominal AC Voltage ranges Line Frequency 50/60 Hz 50/60 Hz Performance Criteria No loss of function or performance No loss of function or performance >10% Nominal AC Voltage ranges 50/60 Hz Loss of function acceptable, self recoverable Table 4: AC Line Surge Transient Performance AC Line Surge Duration Continuous 0 to ½ AC cycle Surge 10% 30% Operating AC Voltage Nominal AC Voltages Mid-point of nominal AC Voltages Line Frequency 50/60 Hz 50/60 Hz Performance Criteria No loss of function or performance No loss of function or performance - 12 - SSI EPS12V Power Supply Design Guide, V1. 6 5. 9 AC Line Fast Transient Specification STATUS Recommended The power supply shall meet the EN61000-4-5 directive and any additional requirements in IEC1000-4-5:1995 and the Level 3 requirements for surge-withstand capability, with the following conditions and exceptions: · · · These input transients must not cause any out-of-regulation conditions, such as overshoot and undershoot, nor must it cause any nuisance trips of any of the power supply protection circuits. The supply must meet surge-withstand test conditions under maximum and minimum DC-output load conditions. 6 6. 1 6. 1. 1 DC Output Specification Output Connectors Required Baseboard power connector STATUS Required The power supply shall have the following output connectors and wire harness configuration. Connector housing: 24-Pin Molex 39-01-2240 or equivalent Contact: Molex 44476-1111 or equivalent Table 5: P1 Baseboard Power Connector 18 AWG Color Pin Signal Orange Orange Black Red Black Red Black Gray Purple Yellow Yellow Orange 13 14 15 16 17 18 19 20 21 22 23 24 +3. 3 VDC -12 VDC COM PS_ON COM COM COM Reserved (-5 V in ATX) +5 VDC +5 VDC +5 VDC COM Pin 1 2 3 4 5 6 7 8 9 10 11 12 Signal +3. 3 VDC +3. 3 VDC COM +5 VDC COM +5 VDC COM PWR OK 5 VSB +12 V2 +12 V2 +3. 3 VDC 18 AWG Color Orange Blue Black Green Black Black Black N. C. Red Red Red Black If 240VA limiting is not a requirement for the power supply than all +12V outputs are common and may have the same wire color (yellow). - 13 - SSI EPS12V Power Supply Design Guide, V1. 6 6. 1. 2 Required Processor Power Connector STATUS Required Connector housing: 8-Pin Molex 39-01-2080 or equivalent Contact: Molex 44476-1111 or equivalent Table 6: Processor Power Connector Pin 1 2 3 4 Signal COM COM COM COM 18 AWG color Black Black Black Black Pin 5 6 7 8 Signal +12 V1 +12 V1 +12 V1 +12 V1 18 AWG Color Yellow/Black Stripe Yellow/Black Stripe Yellow/Black Stripe Yellow/Black Stripe If 240VA limiting is not a requirement for the power supply than all +12V outputs are common and may have the same wire color (yellow). 6. 1. 3 Required Peripheral Power Connectors STATUS Required Connector housing: Amp 1-480424-0 or equivalent Contact: Amp 61314-1 contact or equivalent Table 7: Peripheral Power Connectors Pin 1 2 3 4 1. Signal +12V2 (+12V3) COM COM +5 VDC 18 AWG Color Yellow (Yellow/Blue Stripe) Black Black Red For power supply that meet the 240VA power limit levels, the 550W power level has an additional +12V output (+12V3) that is used on the peripheral power connectors. [. . . ] PSON is an active low signal that turns on the +3. 3 V, +5 V, +12 V, and -12 V power rails. When this signal is not pulled low by the system, or left open, the outputs (except the +5 VSB) turn off. This signal is pulled to a standby voltage by a pull-up resistor internal to the power supply. Table 23: PSON Signal Characteristic Signal Type # # # # # Accepts an open collector/drain input from the system. [. . . ]