AN3063 datasheet(22/33 Pages) STMICROELECTRONICS

No. de pieza	AN3063

Descripción Electrónicos	100 W transition-mode PFC pre-regulator with the L6563H

PDF	33 Pages

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Fabricante Electrónico	STMICROELECTRONICS [STMicroelectronics]

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22 / 33 page

Test results and significant waveforms

AN3063

22/33

Doc ID 16261 Rev 3

The event of an open loop is captured in

Figure 30 and 31. We can notice the protection

intervention, latching the operation of the L6563H. As highlighted in

Figure 31 the L6563H is

supplied by the HVS circuit, maintaining Vcc value above its UVLO threshold. As mentioned

previously, to restart the system, the input power must be recycled.

Figure 29.

EVL6563H-100W load transient at

115 Vac, 60 Hz, full load to no load

CH1: PFC output voltage

CH2: PFC_OK (pin #7)

CH3: gate drive (pin #15)

CH4: Iout

Figure 30.

EVL6563H-100W open loop at 115

Vac, 60 Hz, full load

Figure 31.

EVL6563H-100W open loop at 115

Vac, 60 Hz, full load, long

acquisition

CH1: PFC output voltage

CH2: Vcc (pin #16)

CH3: gate drive (pin #15)

CH4: PWM_LATCH (pin#8)

CH1: PFC output voltage

CH2: Vcc (pin #16)

CH3: gate drive (pin #15)

CH4: PWM_LATCH (pin#8)

AN3063 Datasheet(PDF) 22 Page - STMicroelectronics