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Intel TFX12V - page 1
TFX12V Thin Form Factor w ith 12-Volt Connector Power Supply Design Guide Version 2.0 ...
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Intel TFX12V - page 2
TFX 12V Power Supply D esign Guide Thin Form Factor w ith 12-V Connector Version 2.0 2 IMPORTANT INFORMATION AND DISCLAIMERS INTEL CORPORATION (AND ANY CONTRIBUTOR) IS PROVIDING THIS INFORMATION AS A CONVENIENCE A ND ACCORDINGLY MAK ES NO W ARRANTIES W ITH REGARD TO T HIS DOCUMENT OR PRODUCTS MADE IN CONFORMANCE W IT H THIS DOCUMENT. THIS D OCUMENT ...
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Intel TFX12V - page 3
TFX 12V Power Supply D esign Guide Thin Form Factor w ith 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 c larify location of mounting s lot feature 1.2 April, 2003 • Updated power and current guidanc e • Added efficiency targets for l ...
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Intel TFX12V - page 4
TFX 12V Power Supply D esign Guide Thin Form Factor w ith 12-V Connector Version 2.0 4 Contents 1 Introduction ..................................................................................................... 7 1.1 TFX12 V Sc ope ............................................................................................................ 7 1.2 T ...
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Intel TFX12V - page 5
TFX 12V Power Supply D esign Guide Thin Form Factor w ith 12-V Connector Version 2.0 2.4.3 No-loa d Opera tion ........................................................................................25 2.4.4 Over Current P rotecti on ...............................................................................25 2.4.5 Over-temperatu re Prote ctio ...
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Intel TFX12V - page 6
TFX12V Power Supply Design G uide Thin Form Factor with 12 V Connec tor Version 2.0 6 Figures Figu re 1. TF X12 V Pow er Sup ply ...................................................................................................... 7 Figure 2. Cross Loading Graph for 180W C onfiguration............................................................... ...
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Intel TFX12V - page 7
TFX 12V Power Supply D esign Guide Thin Form Factor w ith 12-V Connector Version 2.0 1 Introduction 1.1 TFX12V Scope This document provides design suggestions for a small form factor pow er supply that is primarily intended for use with small form factor sy stem designs (9-15 liters in total system volume). It should not be inferred that all Thin F ...
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Intel TFX12V - page 8
TFX12V Power Supply Design G uide Thin Form Factor with 12 V Connec tor Version 2.0 8 1.2.2 Improved Acoustics As desktop systems become smaller, they are placed in more ex posed areas in the home and w ork place. The smaller systems are no longer confined to the floor or under the desk, but are placed on the desktop nex t to the user. In these sit ...
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Intel TFX12V - page 9
TFX 12V Power Supply D esign Guide Thin Form Factor w ith 12-V Connector Version 2.0 1.4 Terminology The follow ing terms are used in this document: Term Descript ion Required The status given to items within this des ign guide, which are required to meet des ign guide and a large m ajority of sy stem applications. Recommended T he status given to ...
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Intel TFX12V - page 10
TFX12V Power Supply Design G uide Thin Form Factor with 12 V Connec tor Version 2.0 10 2 Electrical The follow ing electrical requirements must be met over the environmental ranges as defined in Section 5 (unless otherwise noted). 2.1 A C Input Table 1, lists AC input v oltage and frequency requirements for continuous operation. The pow er supply s ...
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Intel TFX12V - page 11
TFX 12V Power Supply D esign Guide Thin Form Factor w ith 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 – CAN/CSA-C 22.2-60950-00, EN*60 950, 3 rd E ...
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Intel TFX12V - page 12
TFX12V Power Supply Design G uide Thin Form Factor with 12 V Connec tor Version 2.0 12 2.1.5 Catastrophi c Failure Pr otection Should a component failure occur, the power supply should not exhibit any of the following: • Flame • Ex cessive smoke • Charred PCB • Fused PCB conductor • Startling noise • Emission of molten material • Eart ...
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Intel TFX12V - page 13
TFX 12V Power Supply D esign Guide Thin Form Factor w ith 12-V Connector Version 2.0 2.2.3 Typical Power Distribution DC output pow er 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, a ...
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Intel TFX12V - page 14
TFX12V Power Supply Design G uide Thin Form Factor with 12 V Connec tor Version 2.0 14 Table 4. Typical Powe r Distribution for 220 W TFX12V Conf igurations Output Minimum Cur rent (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 VDC 0.0 0.3 +5 VSB 0.0 2 .0 2.5 Note: Total c o ...
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Intel TFX12V - page 15
TFX 12V Power Supply D esign Guide Thin Form Factor w ith 12-V Connector Version 2.0 Table 5. Typical Powe r Distribution for 240 W TFX12V Conf igurations Output Minimum Cur rent (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 0.0 0.3 +5 VSB 0.0 2 .0 2.5 Note: Total c omb ...
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Intel TFX12V - page 16
TFX12V Power Supply Design G uide Thin Form Factor with 12 V Connec tor Version 2.0 16 Table 6: Typical Pow er Distribution for 270 W SFX12V Conf igurations 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 VD C 0.5 17.0 -12 VDC 0.0 0.3 +5 VSB 0.0 2.0 2.5 Note : Tota ...
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Intel TFX12V - page 17
TFX 12V Power Supply D esign Guide Thin Form Factor w ith 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 show n in Table 7 represents a fully loaded system, a ty pical (50%) load ...
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Intel TFX12V - page 18
TFX12V Power Supply Design G uide Thin Form Factor with 12 V Connec tor 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 pow er / sleep state (S1 or S3) the system should consume power in accordance with the v alues listed in Table 9 . Tab ...
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Intel TFX12V - page 19
TFX 12V Power Supply D esign Guide Thin Form Factor w ith 12-V Connector Version 2.0 Scope Load V out V r et ur n Pow er Sup pl y A C H o t AC Neu tr al AC G round Scope No te: Use Tektr onix † TD S 4 6 0 O s c illos c ope or equi valent and a P6046 probe or equi valent . F ilter N o te : 0.1uf - Kem et, C 1206C104 K5RAC or equi val en t 10uf - U ...
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Intel TFX12V - page 20
TFX12V Power Supply Design G uide Thin Form Factor with 12 V Connec tor Version 2.0 20 2.2.9 Capacitive Load The pow er supply should be able to power up and operate with the regulation limits defined in T able 2, Section 2.2.1, with the follow ing capacitances simultaneously present on the DC outputs. Table 12. Output Capaci tive Loads Output Capa ...
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Intel TFX12V - page 21
TFX 12V Power Supply D esign Guide Thin Form Factor w ith 12-V Connector Version 2.0 2.3 Timing / Housekeeping / Control PS_ON# PWR_OK PWR_OK Sense Lev el = 95% of nominal 95% 10% ~ ~ ~ T2 T3 T4 T6 timing_3_5_12b +12VDC +5VDC +3.3VDC O/P's } VA C ~ T5 T1 Figure 7. Powe r Supply Timing Notes: T1 is defined in Section 2.3.4. , T 2 in Section 2.3 ...
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Intel TFX12V - page 22
TFX12V Power Supply Design G uide Thin Form Factor with 12 V Connec tor Version 2.0 22 2.3.1 PWR_OK PW R_OK is a “ power good ” signal. This signal should be asserted high by the pow er supply to indicate that the +12 VDC, +5 VDC, and +3.3 VD C outputs are above the under voltage thresholds listed in T able 2 in Section 2.2.1 and that sufficien ...
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Intel TFX12V - page 23
TFX 12V Power Supply D esign Guide Thin Form Factor w ith 12-V Connector Version 2.0 Table 14. PS_O N# Signal Characterist ics 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 circ uit, Iin = 0 5.25 V Enab le Dis abl e PS_ON# Vol ...
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Intel TFX12V - page 24
TFX12V Power Supply Design G uide Thin Form Factor with 12 V Connec tor Version 2.0 24 2.3.5 Rise Time The output voltages shall rise from ≤ 10% of nominal to w ithin 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 ramp of each DC output v oltage from 10% to ...
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Intel TFX12V - page 25
TFX 12V Power Supply D esign Guide Thin Form Factor w ith 12-V Connector Version 2.0 Table 15. Over Voltage Pro tection 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 output short circuit is defined as any output ...
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Intel TFX12V - page 26
TFX12V Power Supply Design G uide Thin Form Factor with 12 V Connec tor Version 2.0 26 3 Mechanical 3.1 Labeling /Marking The follow i ng is a non-inclusive list of suggested markings for each pow er supply unit. Product regulation stipulations for sale into various geographies may impose additional labeling requirements. • Manufacturer informati ...
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Intel TFX12V - page 27
TFX 12V Power Supply D esign Guide Thin Form Factor w ith 12-V Connector Version 2.0 Figure 9. Power Supply Dimensions and Recommended Feature Placements (not to scale) ...
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Intel TFX12V - page 28
TFX12V Power Supply Design G uide Thin Form Factor with 12 V Connec tor Version 2.0 28 Figure 10. P ower Supply Mounting S lot Detail ...
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Intel TFX12V - page 29
TFX 12V Power Supply D esign Guide Thin Form Factor w ith 12-V Connector Version 2.0 3.3 Mounting Options The T FX12V mechanical design provides tw o 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 can be designed to engage the slot provided in ...
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Intel TFX12V - page 30
TFX12V Power Supply Design G uide Thin Form Factor with 12 V Connec tor Version 2.0 30 3.4 Chassis Requirements To ensure the pow er supply can be easily integrated, the following features should be designed into a chassis intended to use a TFX 12V power supply : • Chassis cutout (normally in the rear panel of the chassis) as show n in Figure 12 ...
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Intel TFX12V - page 31
TFX 12V Power Supply D esign Guide Thin Form Factor w ith 12-V Connector Version 2.0 3.5 A irflow / Fan The designer ’ s choice of a pow er 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 operation . Fan location/direction: In genera ...
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Intel TFX12V - page 32
TFX12V Power Supply Design G uide Thin Form Factor with 12 V Connec tor Version 2.0 32 3.7 DC Connectors Figure 14 shows pin outs and profiles for ty pical TFX 12V power supply D C harness connectors. The T FX12V requires an additional two-pin, pow er connector. UL Listed or recognized component appliance w iring material rated min 85 ° C, 300 VDC ...
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Intel TFX12V - page 33
TFX 12V Power Supply D esign Guide Thin Form Factor w ith 12-V Connector Version 2.0 3.7.1 TFX12V Main Power Connector Connector: MOLEX * 39-01-2240 or equivalent (Mating motherboard connector is M olex 44206-0007 or equivalent) 18 AW G is suggested for all wires ex cept for the +3.3 V supply and sense return wires combined into pin 11 (22 AW G). P ...
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Intel TFX12V - page 34
TFX12V Power Supply Design G uide Thin Form Factor with 12 V Connec tor Version 2.0 34 3.7.4 +12 V Power Connector Connector: MOLEX * 39-01-2040 or equivalent (Mating motherboard connector is M olex * 39-29-9042 or equivalent) Pin Signal 18 AWG Wire Pin Signal 18 AWG Wire 1 COM Black 3 +12 V2DC Yellow /Black Stripe 2 COM Black 4 +12 V2DC Yellow /Bl ...
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Intel TFX12V - page 35
TFX 12V Power Supply D esign Guide Thin Form Factor w ith 12-V Connector Version 2.0 35 4 Environmental The follow ing subsections define recommended environmental specifications and test parameters, based on the typical conditions a TFX 12V power supply unit may be subjected to during operation or shipment. 4.1 Temperature Operating ambient : +10 ...
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Intel TFX12V - page 36
TFX12V Power Supply Design G uide Thin Form Factor with 12 V Connec tor Version 2.0 36 4.6 Random Vibration Non-operating: 0.01 g ² /Hz at 5 Hz, sloping to 0.02 g ² /Hz at 20 H z, and maintaining 0.02 g ² /Hz from 20 Hz to 500 Hz. T he area under the PSD curve is 3.13 gRM S. The duration shall be 10 minutes per axis for all three axes on all sam ...
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Intel TFX12V - page 37
TFX 12V Power Supply D esign Guide Thin Form Factor w ith 12-V Connector Version 2.0 37 5 Safety The follow i ng subsections outline sample product regulations requirements for a typical pow er supply. Actual requirements will depend on the design, product end use, target geography , and other variables. Consult your company ’ s Product Safety an ...
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Intel TFX12V - page 38
TFX12V Power Supply Design G uide Thin Form Factor with 12 V Connec tor Version 2.0 38 6 Electromagnetic Compatibility The follow ing subsections outline applicable product regulatory requirements for the TFX 12V power supply. Additional requirements may be applied dependent upon the design, product end use (e.g., medical equipment and hazardous lo ...
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Intel TFX12V - page 39
TFX 12V Power Supply D esign Guide Thin Form Factor w ith 12-V Connector Version 2.0 39 6.3 Input Line Current Harmonic Content For sales in the EU (European Union) the pow er supply shall meet the requirements of EN61000-3-2 Class D and the Guidelines for the Suppression of H armonics in Appliances and General Use Equipment Class D for harmonic li ...
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Intel TFX12V - page 40
TFX12V Power Supply Design G uide Thin Form Factor with 12 V Connec tor Version 2.0 40 7 System Cooling Considerations The pow er supply fan location allows the system designer to utilize the airflow to help cool critical components such as the processor and chipset. Please note that the fan pulls air from the system, instead of blow ing hot air in ...
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