AN4414 datasheet(13/20 Pages) STMICROELECTRONICS

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AN4414 数据表(PDF) 13 Page - STMicroelectronics

部件名	AN4414

功能描述	Anti-tampering ferrite less power supply for 3-phase energy meter

PDF	20 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

13 / 20 page

DocID025611 Rev 1

13/20

AN4414

Description of SMPS

input as 360 V till 440 VAC input mains, hence the peak current through the device is

limited.

Looking into the waveform in Figure 8, at maximum mains input of 440 VAC (Vdcmax ~ 360

VDC to flyback input), the peak current through the device is 211 mA.

Equation 36

We have:

Figure 2. CH1: FB signal, CH3: drain current, CH4: drain source voltage at 100 VDC

Ipkp

Vdcmax Tonmin



--------------------------------------------------

360V 400ns



680

H

-------------------------------------

211mA

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