EVL6564-100W STMicroelectronics, EVL6564-100W Datasheet - Page 5

• Manufacturer Part Number: EVL6564-100W
• Description: BOARD EVAL PFC FOR L6564D
• Manufacturer: STMicroelectronics
• Type: Power Factor Correctionr

Specifications of EVL6564-100W

• Main Purpose: AC/DC, Primary Side
• Outputs And Type: 1, Non-Isolated
• Power - Output: 100W
• Voltage - Output: 400V
• Voltage - Input: 90 ~ 265VAC
• Regulator Topology: Boost
• Frequency - Switching: 40kHz
• Board Type: Fully Populated
• Utilized Ic / Part: L6564
• Input Voltage: 90 V to 265 V
• Output Voltage: 400 V
• Dimensions: 90 mm x 83 mm
• Product: Power Management Modules
• Lead Free Status / RoHS Status: Lead free by exemption / RoHS compliant by exemption
• Current - Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• For Use With/related Products: L6564
• Other names: 497-10164

AN3022
Main characteristics and circuit description
DC level equal to the peak voltage on pin #3 (MULT), is fed to a second input to the
2
multiplier for the 1/V
function necessary to compensate the control loop gain dependence
on the mains voltage. Additionally, the pin #5 (V
) is internally connected to a comparator
FF
providing brownout (AC mains undervoltage) protection. A voltage below 0.8 V shuts down
(does not latch) the IC and brings its consumption to a considerably lower level. The L6564
restarts as the voltage at the pin rises above 0.88 V.
The divider R3, R6, R11 and R15 provides the L6564 pin #6 (PFC_OK) with the information
regarding the output voltage level. This information is required by the L6564 output voltage
monitoring and disable functions used for PFC protection purposes.
If the voltage on pin #6 exceeds 2.5 V, the IC stops switching and restarts as the voltage on
the pin falls below 2.4 V, implementing the dynamic OVP and preventing the output voltage
from becoming excessive in case of transients because of the slow response of the error
amplifier. However, if at the same time, the voltage of the INV pin is lower than 2.4V and falls
40 mV below that of the pin PFC_OK, a feedback failure is assumed. In this case the device
is latched off. Normal operation can be resumed only by cycling Vcc, bringing its value lower
than 6 V before rising up to the turn-on threshold.
Additionally, if the voltage on pin #6 (PFC_OK) is tied below 0.23 V, the L6564 shuts down.
To restart the L6564, the voltage on pin #6 (PFC_OK) has to increase above 0.27 V. This
function can be used as a remote on/off control input.
To allow interfacing the board with a D2D converter, the connector J3 allows powering the
L6564 with an external Vcc and also controlling the IC operation via pin #6 (PFC_OK).
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