EVL6563S-400W STMicroelectronics, EVL6563S-400W Datasheet - Page 15

• 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

AN2994
Figure 21. EVL6563S-400W input current
THD [%]: 3.39% - 3RD harmonic: 0.126 A
CH3: V
CH4: Input current
FF
voltage - pin #5
To overcome this issue, the new L6563S integrates an innovative circuitry that allows getting
a fast transient response regardless of the voltage change that occurs on the mains, both
surges and drops. Therefore, if there is a sudden rise in the line voltage, C
charged through the low impedance of the internal diode and no appreciable overshoot is
visible at the pre-regulator's output. If there is a drop in the line voltage, an internal "mains
drop" detector enables a low impedance switch that suddenly discharges C
avoiding a long settling time before reaching the new voltage level. Consequently, an
acceptably low steady-state ripple and low current distortion can be achieved without any
considerable undershoot or overshoot on the pre-regulator's output like in systems with no
feed-forward compensation.
Figure 23
an input voltage surge from 90 to 140 Vac: in the graphic, it is evident that the V
provides for the stability of the output voltage, which is not affected by the input voltage
surge. In fact, thanks to the V
very fast and the output voltage remains stable at its nominal value. The opposite is
confirmed in
and delivering a similar output power. In the case of a mains surge, the controller cannot
compensate it and the output voltage stability is guaranteed by the feedback loop only.
Unfortunately, as previously said, its bandwidth is narrow and thus the output voltage has a
significant deviation from the nominal value. The circuit has the same behavior in the case of
a mains surge at any input voltage, and is also not affected if the input mains surge happens
at any point of the input sine wave.
shape at 100 Vac, 60 Hz,
C
FF
= 470 nF, R
shows the behavior of the EVL6563S-400W demonstration board in the case of
Figure
FF
= 390 kΩ
24: it shows the behavior of a PFC using the L6562 operating in FOT
FF
Doc ID 15796 Rev 2
function, the compensation of the input voltage variation is
Figure 22. EVL6563S-400W input current
THD [%]: 2.75% - 3RD harmonic: 0.109 A
CH3: V
CH4: Input current
FF
Test results and significant waveforms
voltage - pin #5
shape at 100 Vac, 60 Hz,
C
FF
= 1.5 µF, R
FF
= 390 kΩ
FF
FF
, therefore
is rapidly
FF
function
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