TFX12V Power Supply Design Guide Thin Form Factor with 12-V Connector Version 2.0

Pow er Supply

V out

 

 

AC Hot

 

 

 

AC Neutral

V return

10uf

0 .1uf

 

 

 

AC G round

G eneral Notes:

1. Load the output with its m inim um load current.

2. Connect the probes as shown.

3. Repeat the m easurem ent with m axim um load on the output.

Load

Load m ust be isolated from the ground of the power supply.

Filter Note:

0.1uf - Kem et, C 1206C 104K5R AC or equivalent 10uf - United Chem i-con, 293D106X0025D 2T or

equivalent

Scope

Scope Note:

Use TektronixTDS460 O scilloscope or equivalent and a P6046 probe or equivalent.

Figure 6. Differential Noise Test Setup

2.2.8Output Transient Response

Table 11 summarizes the expected output transient step sizes for each output. The transient load slew rate is = 1.0 A/µs.

Table 11. DC Output Transient Step Sizes

 

Maximum Step Size

Output

(% of rated output amps)

+12 V1DC

40%

+12 V2DC

60%

+5 VDC

30%

+3.3 VDC

30%

-12 VDC

 

+5 VSB

 

Maximum Step Size

(amps)

0.1A

0.5A

Note: For example, for a rated +5 VDC output of 14 A, the transient step would be 30% × 14 A = 4.2 A

Output voltages should remain within the regulation limits of Table 2, Section 2.2.1, for instantaneous changes in load as specified in Table 11 and for the following conditions:

Simultaneous load steps on the +12 VDC, +5 VDC, and +3.3 VDC outputs (all steps occurring in the same direction)

Load-changing repetition rate of 50 Hz to 10 kHz

AC input range per Section 3.1 and Capacitive loading per Table 12

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Intel TFX12V manual Output Transient Response, Maximum Step Size Amps

TFX12V specifications

The Intel TFX12V is a power supply unit (PSU) designed specifically for compact desktop systems, catering to the needs of PC builders who prioritize space-efficient components without compromising on performance. Intel's TFX12V specification defines the form factor and power delivery standards, ensuring compatibility across a wide range of motherboards and peripherals.

One of the main features of the TFX12V is its slimline design. Measuring 85mm in height, 65mm in width, and 150mm in depth, this PSU fits into smaller case designs, making it ideal for compact desktops or media centers. Despite its small size, the TFX12V delivers robust power, typically ranging from 300W to 400W. This output is sufficient for everyday computing tasks, light gaming, and media consumption, allowing users to create space-saving systems without sacrificing functionality.

The TFX12V power supply adheres to the ATX power supply standard, featuring a 24-pin ATX connector, which ensures broad compatibility with modern motherboards. Additionally, the TFX12V includes connections for other crucial components, such as the 4-pin CPU power connector and multiple SATA and PCIe connectors, enabling the build of systems with modern graphics cards and storage solutions.

The efficiency of the TFX12V is another significant aspect. Many models are designed to meet or exceed the 80 PLUS certification, which indicates at least 80% efficiency at 20%, 50%, and 100% loads. High efficiency not only reduces energy consumption but also minimizes heat generation, leading to quieter operation due to lower fan speeds.

In terms of safety and reliability, TFX12V power supplies come equipped with standard protections against over-voltage, under-voltage, and short-circuits. These safety features safeguard the valuable components of a PC from potential power surges or failures.

Furthermore, the product lifecycle of the Intel TFX12V often ensures access to advanced technologies, including pulsating load regulation and enhanced thermal management technologies. These features contribute to a stable power output and improved performance, even under load.

In summary, the Intel TFX12V power supply unit combines compactness, efficiency, and reliability, making it an attractive choice for users looking to build a small form-factor PC without compromising on essential features or quality. With its robust performance and modern technology, it meets the demands of today's computing needs effectively.