EVL6563H-100W View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

EVL6563H-100W

250 W transition-mode PFC pre-regulator with the new L6563H

STMicroelectronics 

Test results and significant waveforms

AN3118

Figure 26. EVL6563S-250W TM PFC: startup attempt at 80 Vac-60 Hz - full load

CH1: PFC output voltage

CH2: Vcc voltage (pin #16)

CH3: RUN (pin #12)

CH4: gate drive (pin #15)

In Figure 26 a startup tentative below the threshold is captured. As seen, at startup the RUN

pin does not allow the PFC startup even if the Vcc has reached the turn-on threshold. PFC

output voltage remains at the peak of the input sinewave.

In Figure 27 and 28 circuit waveforms during brown-out protection operation are shown. In

both cases the mains voltage was increased or decreased slowly; as visible both at turn-on

or turn-off there are no bouncing or starting attempts by the PFC converter.

Figure 27. EVL6563H-250W TM PFC: startup Figure 28. EVL6563H-250W TM PFC: turn-off

with slow input voltage increasing -

with slow input voltage decreasing

full load

- full load

CH1: PFC output voltage

CH2: gate drive (pin #15)

CH3: RUN (pin #10)

CH4: PWM_stop (pin #11)

18/31

CH1: PFC output voltage

CH2: gate drive (pin #15)

CH3: RUN (pin #10)

CH4: PWM_stop (pin #11)

Doc ID 16847 Rev 2

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