EVL6566A-75WES4 STMicroelectronics, EVL6566A-75WES4 Datasheet - Page 16

• Manufacturer Part Number: EVL6566A-75WES4
• Description: BOARD DEMO FOR L6563/LL6566A
• Manufacturer: STMicroelectronics
• Type: Power Factor Correctionr

Specifications of EVL6566A-75WES4

• Main Purpose: AC/DC, Primary and Secondary Side with PFC
• Outputs And Type: 1, Isolated
• Power - Output: 75W
• Voltage - Output: 19V
• Current - Output: 4A
• Voltage - Input: 90 ~ 264VAC
• Regulator Topology: Flyback
• Board Type: Fully Populated
• Utilized Ic / Part: L6563, L6566A, TSM1014
• Input Voltage: 90 V to 264 V
• Output Voltage: 19 V
• Dimensions: 78 mm x 170 mm
• Product: Power Management Modules
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Frequency - Switching: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• For Use With/related Products: L6563S, L6566A
• Other names: 497-8834

Functional check
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Figure 11. Flyback stage waveforms
CH1: Drain voltage
CH2: CS pin voltage
Figure 9.
CH1: Drain voltage
CH2: CS pin voltage
Functional check
The following figures show some flyback waveforms during steady-state operation and the
L6563S TBO function is depicted, setting different PFC output voltages according to the
mains input voltage.
At nominal load conditions, in
edge triggers the MOSFET's turn-on, allowing quasi-resonant operation.
Figure 11
frequency has been set at 125 kHz. For this reason, the L6566A skips the first valley signal
on ZCD and switches on the MOSFET at the second negative-going edge.
at 115 V-60 Hz - 20 W load
Flyback stage waveforms
at 115 V-60 Hz - full load
and
CH3: ZCD pin
CH4: PFC output
CH3: ZCD pin
CH4: PFC output
Figure 12
show operation at 20 W. As indicated before, maximum switching
Figure 9
Doc ID 15447 Rev 3
and
Figure 10. Flyback stage waveforms
CH1: Drain voltage
CH2: CS pin voltage
Figure 12. Flyback stage waveforms
CH1: Drain voltage
CH2: CS pin voltage
Figure 10
at 230 V -50 Hz - full load
at 230 V -50 Hz - 20 W load
, we note that the ZCD negative-going
CH3: ZCD pin
CH4: PFC output
CH3: ZCD pin
CH4: PFC output
AN2941