Intel TFX12V manual Input Line Current Harmonic Content, Magnetic Leakage Fields, Harmonic Order n

TFX12V Power Supply Design Guide

Thin Form Factor with 12-V Connector

Version 2.0

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 General Use Equipment Class D for harmonic line current content at full rated power. See Table 16 for the harmonic limits.

Table 16. Harmonic Limits, Class D Equipment

Harmonic Order n

3

5

7

9

11

13

15≤ n ≤39

Per: EN 61000-3-2

Maximum permissible Harmonic current at 230 VAC / 50 Hz in Amps

Odd harmonics

2.3

1.14

0.77

0.4

0.33

0.21

0.15 x (15/n)

Per: JEIDA MITI

Maximum permissible Harmonic current at 100VAC / 50 Hz in Amps

5.29

2.622

1.771

0.92

0.759

0.483

0.345 x (15/n)

6.4 Magnetic Leakage Fields

A PFC choke magnetic leakage field should not cause any interference with a high-resolution computer monitor placed next to or on top of the end-use chassis.

6.5 Voltage Fluctuations and Flicker

The power supply shall meet the specified limits of the EN61000-3-3 Specification for voltage fluctuations and flicker for equipment drawing not more then16 AAC, connected to low voltage distribution systems.

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