EVL6563S-400W STMicroelectronics, EVL6563S-400W Datasheet - Page 16

• Manufacturer Part Number: EVL6563S-400W
• Description: EVAL BOARD FOR L6563(400W)
• Manufacturer: STMicroelectronics
• Type: Motor / Motion Controllers & Driversr

Specifications of EVL6563S-400W

• Main Purpose: Power Management, Power Factor Correction
• Embedded: No
• Utilized Ic / Part: L6563
• Primary Attributes: 400W Power Factor Correction and Preregulator Combination
• Secondary Attributes: Transition Mode & Active Tracking Boost Function.
• Maximum Operating Temperature: + 60 C
• Product: Power Management Development Tools
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: L6563S
• Other names: 497-10488

Test results and significant waveforms
16/38
Figure 23. EVL6563S-400W input mains surge
CH1: Output voltage
CH2: Input rectified mains voltage
CH3: V
CH4: Input current
FF
voltage - pin #5
Figure 25
the internal circuitry has detected the decreasing of the mains voltage and has activated the
C
within a few mains cycles it comes back to the nominal value. The situation is different if we
check the performance of a controller without the V
behavior of a PFC using the L6562A operating in FOT and delivering a similar output power:
in the case of a mains dip from 140 to 90 Vac, the output voltage variation is not very
different but the output voltage requires a longer time to restore the original value.
Doing tests with a wider voltage variation (for example, 265 to 90 Vac) the output voltage
variation of a PFC without the voltage feed-forward fast discharge is much more
emphasized.
from 90 Vac to 140 Vac, full load,
C
FF
FF
internal fast discharge. As you can see in this case, the output voltage changes but
= 1 µF
shows the circuit’s behavior in the case of a mains dip: as previously described,
Doc ID 15796 Rev 2
Figure 24. L6562A FOT input mains surge
CH1: Output voltage
CH2: Input rectified mains voltage
CH4: Input current
FF
from 90 Vac to 140 Vac, full load,
NO V
function.
FF
input
Figure 26
shows the
AN2994