User manual ENHANCE CFX12V V1.0

[. . . ] CFX12V Power Supply Design Guide Rev 1. 0 Compact Form Factor with 12-Volt Connector CFX12V Compact Form Factor with 12-Volt Connector Power Supply Design Guide Version 1. 0 Revision History Version Release Date 0. 7 0. 9 July, 2003 August, 2003 Notes · First Release · · · Updated Table 6 Updated Figure 7 mechanical drawing. Modified main power connector in section 3. 7. 1 and Figure 9 Name change to CFX12V Compact Form Factor with 12V Connector. Modified definition of Monotonically in Section 1. 2 Changed Section 2. 1 to AC Input 1. 0 November 2003 · · · · Changed 270 Watt power configuration to 275 Watt configuration and added second 12 V rail in Section 2. 2. 3, Section 2. 2. 5, Section 3. 2. 2 and Table 5, Table 7 and Table 18. Updated information in Table 9, Table 10 and Table 11. [. . . ] +12. 60 +12. 60 +5. 25 +3. 47 -13. 20 +5. 25 Unit Volts Volts Volts Volts Volts Volts ±5% ±10% ±5% At +12 VDC peak loading, regulation at the +12 VDC output can go to ± 10%. Voltage tolerance is required at main connector and S-ATA connector (if used). 10 CFX12V Power Supply Design Guide Rev 1. 0 Compact Form Factor with 12-Volt Connector 2. 2. 2 Remote Sensing The +3. 3 VDC output should have provisions for remote sensing to compensate for excessive cable drops. The default sense should be connected to pin 11 of the main power connector. The power supply should draw no more than 10 mA through the remote sense line to keep DC offset voltages to a minimum. 2. 2. 3 Typical Power Distribution DC output power requirements and distributions will vary based on specific system options and implementation. Significant dependencies include the quantity and types of processors, memory, add-in card slots, and peripheral bays, as well as support for advanced graphics or other features. through and Figure 1 through Figure 3 shows the power distribution and cross loading tables for power supplies in the range of 220 W to 275W. These are recommended but it is ultimately the responsibility of the designer to define a power budget for a given target product and market. 11 CFX12V Power Supply Design Guide Rev 1. 0 Compact Form Factor with 12-Volt Connector Table 3. Output +12 VDC +5 VDC +3. 3 VDC -12 VDC +5 VSB Typical Power Distribution for 220 W Configurations Minimum Current (amps) 1. 0 0. 3 0. 5 0 0 Rated Current (amps) 15. 0 13. 5 12. 0 0. 3 2. 0 2. 5 Peak Current (amps) 16. 0 Note: Total combined output of 3. 3 V and 5 V is 100 W Figure 1: Cross Loading Graph for 220W configuration 220W Cross Regulation (5V rail + 3. 3V rail vs. 12V) 120 5V + 3. 3V power (watts) 100 80 60 40 20 0 0 50 100 150 200 12V power (watts) Combined Power (5V rail + 3. 3V rail) 12 CFX12V Power Supply Design Guide Rev 1. 0 Compact Form Factor with 12-Volt Connector Table 4. Typical Power Distribution for 240 W Configurations Minimum Current Output +12 VDC +5 VDC +3. 3 VDC -12 VDC +5 VSB (amps) 1. 0 0. 3 0. 5 0 0 Rated Current (amps) 16. 0 14. 5 13. 0 0. 3 2. 0 2. 5 Peak Current (amps) 17. 0 Note: Total combined output of 3. 3 V and 5 V is 110 W Figure 2. Cross Loading Graph for 240W Configuration 240W Cross Regulation (5V rail + 3. 3V rail vs. 12V) 120 5V + 3. 3V power (watts) 100 80 60 40 20 0 0 100 200 300 12V power (watts) Combined Power (5V rail + 3. 3V rail) 13 CFX12V Power Supply Design Guide Rev 1. 0 Compact Form Factor with 12-Volt Connector Table 5. Output +12 V1DC +12V2DC +5 VDC +3. 3 VDC -12 VDC +5 VSB Typical Power Distribution for 275 W Configurations Minimum Current (amps) 1. 0 1. 0 0. 3 0. 5 0 0 Rated Current (amps) 5. 0 13. 5 14. 5 13. 0 0. 3 2. 0 2. 5 Peak Current (amps) 7. 0 Note: Total combined output of 3. 3 V and 5 V is 110 W 12V2 support processor power requirements and must be an isolated voltage Figure 3. Cross Loading Graph for 275W Configuration 275W Cross Regulation (5V rail + 3. 3V rail vs. 12V) 120 5V + 3. 3V power (watts) 100 80 60 40 20 0 0 100 200 300 12V power (watts) Combined Power (5V rail + 3. 3V rail) 2. 2. 4 Power Limit / Hazardous Energy Levels Under normal or overload conditions, it is required that no output shall continuously provide 240 VA under any conditions of load including output short circuit, per the requirement of UL 1950/CSA 950 / EN 60950/IEC 950 specification. 14 CFX12V Power Supply Design Guide Rev 1. 0 Compact Form Factor with 12-Volt Connector 2. 2. 5 Efficiency General The power supply should have a required minimum efficiency as stated in Table 6 and when cost effective provide the recommended efficiency in Table 6. The efficiency of the power supply should be tested at nominal input voltage of 115VAC input and 230VAC input, under the load conditions defined in Table 6, and under the temperature and operating conditions defined in Section 3. The loading condition for testing efficiency shown in Table 6 represents a fully loaded system, a 50% loaded system (typical load), and a 20% loaded (light load) system. Table 6. Efficiency Vs Load Loading Full load 70% 75% Typical load 70% 80% Light load 60% 67% Required: Minimum Efficiency Recommended: Minimum Efficiency Table 7. Loading Tables for Efficiency Measurements 220W (loading shown in Amps) Loading Full Typical Light +12V 13. 0 8. 0 3. 0 +5V 7. 8 3. 0 0. 3 +3. 3V 6. 0 5. 0 0. 5 -12V 0. 2 0. 1 0 +5Vsb 1. 0 1. 0 1. 0 240W (loading shown in Amps) Loading Full Typical Light +12V 14. 5 7. 0 3. 4 +5V 8. 0 4. 0 0. 4 +3. 3V 6. 4 3. 0 0. 7 -12V 0. 2 0. 1 0 +5Vsb 1. 0 1. 0 1. 0 275W (loading shown in Amps) Loading Full Typical Light +12V1 4. 0 2. 0 1. 0 12V2 12. 0 6. 0 2. 3 +5V 9. 5 4. 5 0. 4 +3. 3V 7. 5 4. 0 0. 7 -12V 0. 2 0. 1 0 +5Vsb 1. 0 1. 0 1. 0 15 CFX12V Power Supply Design Guide Rev 1. 0 Compact Form Factor with 12-Volt Connector 2. 2. 5. 1 Energy Star* The "Energy Star" efficiency requirements of the power supply depend on the intended system configuration. In the low power / sleep state (S1 or S3) the system should consume power in accordance with the values listed in Table 8. Table 8. Energy Star Input Power Consumption RMS Watts from the AC Line in Sleep/low-Power Mode < 15 W < 20 W < 25 W < 30 W 10% of the maximum continuous output rating Maximum Continuous Power Rating of Power Supply < 200 W > 200 W < 300 W > 300 W < 350 W > 350 W < 400 W > 400 W Note: To help meet the "Energy Star" system requirements, it is recommended that the power supply have 50% efficiency at light load and in standby mode. 2. 2. 5. 2 Other Low Power System Requirements To help meet the Blue Angel* system requirements, RAL-UZ 78, US Presidential executive order 13221, future EPA requirements, and other low Power system demands, therefore is it recommended that the +5 VSB standby supply efficiency should be as high as possible. Standby efficiency is measured with the main outputs off (PS_ON# high state). Standby efficiency should be greater than 50% with a load of 100mA. 2. 2. 6 Output Ripple/Noise The output ripple/noise requirements listed in Table 9 should be met throughout the load ranges specified in Section 2. 2. 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. Measurements shall be made with an oscilloscope with 20 MHz of bandwidth. Outputs should be bypassed at the connector with a 0. 1µF ceramic disk capacitor and a 10µF electrolytic capacitor to simulate system loading. See Figure 4. Table 9. DC Output Noise/Ripple Output +12 V1DC +12 V2DC +5 VDC +3. 3 VDC -12 VDC +5 VSB Maximum Ripple and Noise (mVpp) 120 120 50 50 120 50 16 CFX12V Power Supply Design Guide Rev 1. 0 Compact Form Factor with 12-Volt Connector Pow er Supply AC H ot AC N eutral V out Lo ad V return 10uf 0. 1uf Load m ust be isolated from the ground of the power supply. AC G round G eneral N otes: 1. Load the output with its m inim um load current. [. . . ] Quaternary salt and PCB electrolytic capacitors shall not be used. CFC's or HFC's shall not be used in the design or manufacturing process. Mercury shall not be used. 32 CFX12V Power Supply Design Guide Rev 1. 0 Compact Form Factor with 12-Volt Connector 5 Safety The following subsections outline sample product regulations requirements for a typical power supply. Actual requirements will depend on the design, product end use, target geography, and other variables. [. . . ]