EVL6563S-100W STMicroelectronics, EVL6563S-100W Datasheet - Page 18

• Manufacturer Part Number: EVL6563S-100W
• Description: EVAL BOARD FOR L6563(100W)
• Manufacturer: STMicroelectronics
• Type: Power Factor Correctionr

Specifications of EVL6563S-100W

• Main Purpose: Power Management, Power Factor Correction
• Embedded: No
• Utilized Ic / Part: L6563
• Primary Attributes: 100W Power Factor Correction and Preregulator Combination
• Secondary Attributes: Transition Mode & Active Tracking Boost Function.
• Board Size: 90 mm x 83 mm
• Maximum Operating Temperature: + 60 C
• Operating Supply Voltage: 90 V to 265 V
• Product: Power Management Modules
• Dimensions: 90 mm x 83 mm
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: L6563S
• Other names: 497-10490

Test results and significant waveforms
18/33
Figure 22. L6563: input current at 100 Vac, 50
THD = 5.15%, 3
CH2: MULT (pin #3)
CH3: V
CH4: I_AC
FF
(pin #5)
Comparing
shape and the 3
benefits of the new voltage feed-forward circuit integrated in the L6563S. Allowing a fast
response to mains disturbances but using a quite long V
low THD and high PF at same time as confirmed by the measurements below.
Another function integrated in the L6563S is the brownout protection, which is basically a
non-latched shutdown function that must be activated when a mains undervoltage condition
is detected. This abnormal condition may cause overheating of the primary power section
due to an excess of RMS current. Brownout can also occur because the PFC pre-regulator
works in open loop and this could be dangerous to the PFC stage itself and the downstream
converter, should the input voltage return abruptly to its rated value. Another problem is the
spurious restarts that may occur during converter power down and that cause the output
voltage of the converter not to decay to zero monotonically. For these reasons it is usually
preferable to shutdown the device in case of brownout.
Brownout function is done through sensing of the input mains by an internal comparator
connected to RUN (pin #10), connected via a divider to V
signal proportional to the input mains. The enable and disable thresholds at which the
L6563S will start or stop the operation can be adjusted by modifying that divider ratio. For
additional information please see
Hz, C
RD
harmonic = 43 mA
FF
=0.47 µF, R
Figure 22
rd
harmonic current distortion is not noticeable. This demonstrates the
FF
and
=390 kΩ
23
we can see that the input current of the latter has a better
Doc ID 16279 Rev 2
[2
in
Section 8:
Figure 23. EVL6563S-100W TM PFC: input
THD = 2.30%, 3
CH2: MULT (pin #3)
CH3: V
CH4: I_AC
FF
(pin #5)
References].
current at 100 Vac, 50 Hz, C
R
RD
FF
harmonic = 25.8 mA
FF
FF
=1 MΩ
time constant provides also very
(pin #5) which delivers a voltage
FF
=1 µF,
AN3065