Page 2 - IMPORTANT INFORMATION AND DISCLAIMERS
TFX12V Power Supply Design Guide Thin Form Factor with 12-V Connector Version 2.0 2 IMPORTANT INFORMATION AND DISCLAIMERS INTEL CORPORATION (AND ANY CONTRIBUTOR) IS PROVIDING THIS INFORMATION AS A CONVENIENCE AND ACCORDINGLY MAKES NO W ARRANTIES W ITH REGARD TO THIS DOCUMENT OR PRODUCTS MADE IN CONF...
Page 3 - Revision History
TFX12V Power Supply Design Guide Thin Form Factor with 12-V Connector Version 2.0 3 Revision History Version Release Date Notes 1.0 April, 2002 • Public release 1.01 May, 2002 • Added dimension in Figure 5 to clarify location of mounting slot feature 1.2 April, 2003 • Updated power and current guida...
Page 4 - Contents
TFX12V Power Supply Design Guide Thin Form Factor with 12-V Connector Version 2.0 4 Contents 1 Introduction ..................................................................................................... 7 1.1 TFX12V Scope ..........................................................................
Page 6 - Figures; Figure 15. Serial ATA Connector; Tables
TFX12V Power Supply Design Guide Thin Form Factor with 12 V Connector Version 2.0 6 Figures Figure 1. TFX12V Power Supply ...................................................................................................... 7 Figure 2. Cross Loading Graph for 180W Configuration........................
Page 7 - Introduction; Scope; Figure 1. TFX12V Power Supply; Small System Optimized Profile
TFX12V Power Supply Design Guide Thin Form Factor with 12-V Connector Version 2.0 1 Introduction 1.1 TFX12V Scope This document provides design suggestions for a small form factor power supply that is primarily intended for use with small form factor system designs (9-15 liters in total system volum...
Page 8 - Improved Acoustics; Key Changes for TFX12V Version 2.0; Increased +12 VDC Output Capability
TFX12V Power Supply Design Guide Thin Form Factor with 12 V Connector Version 2.0 8 1.2.2 Improved Acoustics As desktop systems become smaller, they are placed in more exposed areas in the home and work place. The smaller systems are no longer confined to the floor or under the desk, but are placed ...
Page 10 - Electrical; Input; AC Input Line Requirements; Input Over Current Protection; Inrush Current Limiting; Input Under Voltage
TFX12V Power Supply Design Guide Thin Form Factor with 12 V Connector Version 2.0 10 2 Electrical The following electrical requirements must be met over the environmental ranges as defined in Section 5 (unless otherwise noted). 2.1 AC Input Table 1, lists AC input voltage and frequency requirements ...
Page 11 - SAFETY; CAMPATIBILITY
TFX12V Power Supply Design Guide Thin Form Factor with 12-V Connector Version 2.0 2.1.4 Regulatory The power supply is required to be tested and comply with the most current version of the following regulatory specification requirements and/or standards 2.1.4.1 PRODUCT SAFETY UL* 60950, 3 rd Edition...
Page 12 - Catastrophic Failure Protection; Output; DC Voltage Regulation; DC Output Voltage Regulation; Sensing
TFX12V Power Supply Design Guide Thin Form Factor with 12 V Connector Version 2.0 12 2.1.5 Catastrophic Failure Protection Should a component failure occur, the power supply should not exhibit any of the following: • Flame • Excessive smoke • Charred PCB • Fused PCB conductor • Startling noise • Emi...
Page 13 - Typical Power Distribution; 80W Cross Regulation; er; Figure 2. Cross Loading Graph for 180W Configuration
TFX12V Power Supply Design Guide Thin Form Factor with 12-V Connector Version 2.0 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, memo...
Page 14 - 20W Cross Regulation; Figure 3. Cross Loading Graph for 220W Configuration
TFX12V Power Supply Design Guide Thin Form Factor with 12 V Connector Version 2.0 14 Table 4. Typical Power Distribution for 220 W TFX12V Configurations Output Minimum Current (amps) Rated Current (amps) Peak Current (amps) +12 VDC 1.0 15.0 17.0 +5 VDC 0.3 13.0 (Note) +3.3 VDC 0.5 17.0 (Note) -12 VD...
Page 15 - 40W Cros s Regulation; ow; Figure 4. Cross Loading Graph for 240W Configuration
TFX12V Power Supply Design Guide Thin Form Factor with 12-V Connector Version 2.0 Table 5. Typical Power Distribution for 240 W TFX12V Configurations Output Minimum Current (amps) Rated Current (amps) Peak Current (amps) +12 VDC 1.0 16.0 18.0 +5 VDC 0.3 18.0 (Note) +3.3 VDC 0.5 17.0 (Note) -12 VDC 0...
Page 16 - Typical Power Distribution for 270 W SFX12V Configurations; Power Limit / Hazardous Energy Levels; General
TFX12V Power Supply Design Guide Thin Form Factor with 12 V Connector Version 2.0 16 Table 6: Typical Power Distribution for 270 W SFX12V Configurations Output Minimum Current (amps) Maximum Current (amps) Peak Current (amps) +12 V1DC 1.0 7.0 9.0 +12 V2DC 1.0 13.0 +5 VDC 0.3 18.0 +3.3 VDC 0.5 17.0 -...
Page 17 - Efficiency Vs Load
TFX12V Power Supply Design Guide Thin Form Factor with 12-V Connector Version 2.0 115VAC input and 230VAC input, under the load conditions defined Table 8, and under the temperature and operating conditions defined in Section 3. The loading condition for testing efficiency shown in Table 7 represent...
Page 18 - Table 9. Energy Star Input Power Consumption; Other Low Power System Requirements
TFX12V Power Supply Design Guide Thin Form Factor with 12 V Connector Version 2.0 18 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...
Page 19 - Figure 6. Differential Noise Test Setup; Output Transient Response; Table 11. DC Output Transient Step Sizes
TFX12V Power Supply Design Guide Thin Form Factor with 12-V Connector Version 2.0 S c o p e L o a d V o u t V r e t u rn P o w e r S u p p ly A C H o t A C N e u t ra l A C G r o u n d S c o p e N o te : U s e T e k t ro n ix † T D S 4 6 0 O s c illo s c o p e o r e q u iv a le n t a n d a P 6 0 4 6...
Page 20 - Load; Table 12. Output Capacitive Loads; Stability
TFX12V Power Supply Design Guide Thin Form Factor with 12 V Connector Version 2.0 20 2.2.9 Capacitive Load The power supply should be able to power up and operate with the regulation limits defined in Table 2, Section 2.2.1, with the following capacitances simultaneously present on the DC outputs. T...
Page 21 - Figure 7. Power Supply Timing
TFX12V Power Supply Design Guide Thin Form Factor with 12-V Connector Version 2.0 2.3 Timing / Housekeeping / Control PS_ON# PWR_OK PWR_OK Sense Level = 95% of nominal 95% 10% ~ ~ ~ T2 T3 T4 T6 timing_3_5_12b +12VDC +5VDC +3.3VDC O/P's } VAC ~ T5 T1 Figure 7. Power Supply Timing Notes: T1 is defined...
Page 23 - VSB; Time
TFX12V Power Supply Design Guide Thin Form Factor with 12-V Connector Version 2.0 Table 14. PS_ON# Signal Characteristics Parameter Minimum Maximum V IL , Input Low Voltage 0.0 V 0.8 V I IL , Input Low Current (Vin = 0.4 V) -1.6 mA V IH , Input High Voltage (Iin = -200 µA) 2.0 V V IH open circuit, I...
Page 24 - Reset after Shutdown; Protection; Over Voltage Protection
TFX12V Power Supply Design Guide Thin Form Factor with 12 V Connector Version 2.0 24 2.3.5 Rise Time The output voltages shall rise from ≤ 10% of nominal to within the regulation ranges specified in Section 2.2.1 within 0.2 ms to 20 ms (0.2 ms ≤ T 2 ≤ 20 ms). There must be a smooth and continuous ra...
Page 25 - Table 15. Over Voltage Protection
TFX12V Power Supply Design Guide Thin Form Factor with 12-V Connector Version 2.0 Table 15. Over Voltage Protection Output Minimum Nominal Maximum Unit +12 V1DC 13.4 15.0 15.6 Volts +12 V2DC 13.4 15.0 15.6 Volts +5 VDC 5.74 6.3 7.0 Volts +3.3 VDC 3.76 4.2 4.3 Volts 2.4.2 Short-circuit Protection An ...
Page 26 - Mechanical; Dimensions
TFX12V Power Supply Design Guide Thin Form Factor with 12 V Connector Version 2.0 26 3 Mechanical 3.1 Labeling /Marking The following is a non-inclusive list of suggested markings for each power supply unit. Product regulation stipulations for sale into various geographies may impose additional labe...
Page 28 - Figure 10. Power Supply Mounting Slot Detail
TFX12V Power Supply Design Guide Thin Form Factor with 12 V Connector Version 2.0 28 Figure 10. Power Supply Mounting Slot Detail
Page 29 - Options
TFX12V Power Supply Design Guide Thin Form Factor with 12-V Connector Version 2.0 3.3 Mounting Options The TFX12V mechanical design provides two options for mounting in a system chassis. The unit can be mounted using one of the mounting holes on the front end (non-vented end) or a chassis feature ca...
Page 30 - Requirements; Figure
TFX12V Power Supply Design Guide Thin Form Factor with 12 V Connector Version 2.0 30 3.4 Chassis Requirements To ensure the power supply can be easily integrated, the following features should be designed into a chassis intended to use a TFX12V power supply: • Chassis cutout (normally in the rear pa...
Page 31 - Connector
TFX12V Power Supply Design Guide Thin Form Factor with 12-V Connector Version 2.0 3.5 Airflow / Fan The designer’s choice of a power supply cooling solution depends in part on the targeted end-use system application(s). At a minimum, the power supply design must ensure its own reliable and safe oper...
Page 32 - Connectors; Figure 14. TFX12V Connectors
TFX12V Power Supply Design Guide Thin Form Factor with 12 V Connector Version 2.0 32 3.7 DC Connectors Figure 14 shows pin outs and profiles for typical TFX12V power supply DC harness connectors. The TFX12V requires an additional two-pin, power connector. UL Listed or recognized component appliance ...
Page 34 - Figure 15. Serial ATA Connector
TFX12V Power Supply Design Guide Thin Form Factor with 12 V Connector Version 2.0 34 3.7.4 +12 V Power Connector Connector: MOLEX * 39-01-2040 or equivalent (Mating motherboard connector is Molex * 39-29-9042 or equivalent) Pin Signal 18 AWG Wire Pin Signal 18 AWG Wire 1 COM Black 3 +12 V2DC Yellow ...
Page 35 - Environmental; Humidity; Requirement; Shock
TFX12V Power Supply Design Guide Thin Form Factor with 12-V Connector Version 2.0 35 4 Environmental The following subsections define recommended environmental specifications and test parameters, based on the typical conditions a TFX12V power supply unit may be subjected to during operation or shipm...
Page 36 - Vibration
TFX12V Power Supply Design Guide Thin Form Factor with 12 V Connector Version 2.0 36 4.6 Random Vibration Non-operating: 0.01 g²/Hz at 5 Hz, sloping to 0.02 g²/Hz at 20 Hz, and maintaining 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 pe...
Page 37 - Safety; America
TFX12V Power Supply Design Guide Thin Form Factor with 12-V Connector Version 2.0 37 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. C...
Page 39 - Input Line Current Harmonic Content; Table 16. Harmonic Limits, Class D Equipment; Magnetic Leakage Fields
TFX12V Power Supply Design Guide Thin Form Factor with 12-V Connector Version 2.0 39 6.3 Input Line Current Harmonic Content For sales in the EU (European Union) the power supply shall meet the requirements of EN61000-3-2 Class D and the Guidelines for the Suppression of Harmonics in Appliances and ...
