AN3329 datasheet(28/47 Pages) STMICROELECTRONICS

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AN3329 数据表(PDF) 28 Page - STMicroelectronics

部件名	AN3329

功能描述	This application note describes the characteristics and features

PDF	47 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

28 / 47 page

Functional check

AN3329

28/47

Doc ID 18376 Rev 1

Mains sags/dips

Figure 56 and 57 show the converter behavior in the case of half-cycle (8.3 ms) or a

complete cycle (16.6 ms) mains dip. As can be noted, in both cases the PFC output voltage

drops but the L6599A still works correctly, and output voltages do not show any disturbance,

therefore demonstrating a good immunity of the circuit against mains dips.

Figure 56.

Half cycle mains dip at full load and

115 Vac - 60 Hz

Figure 57.

Full cycle mains dip at full load and

115 Vac - 60 Hz

CH3: 24 V output

CH1: HB voltage

CH2: PFC drain

CH4: PFC gate

CH3: 24 V output

CH1: HB voltage

CH2: PFC drain

CH4: PFC gate

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