EVL6566A-75WADP STMicroelectronics, EVL6566A-75WADP Datasheet - Page 4

• Manufacturer Part Number: EVL6566A-75WADP
• Description: BOARD EVAL FOR L6566A
• Manufacturer: STMicroelectronics
• Type: Power Factor Correctionr

Specifications of EVL6566A-75WADP

• 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
• Frequency - Switching: 65kHz
• 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 174 mm
• Product: Power Management Modules
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Regulator Topology: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• For Use With/related Products: L6563, L6566A
• Other names: 497-6449

Description
1.1
1.2
Table 2. Pin description
4/39
Pin N°
1
2
3
4
5
COMP
Name
MULT
VFF
INV
Pin connection
Figure 3.
Pin description
CS
Inverting input of the error amplifier. The information on the output voltage of the PFC pre-
regulator is fed into the pin through a resistor divider.
The pin normally features high impedance but, if the tracking boost function is used, an
internal current generator programmed by TBO (pin 6) is activated. It sinks current from the
pin to change the output voltage so that it tracks the mains voltage.
Output of the error amplifier. A compensation network is placed between this pin and INV
(pin 1) to achieve stability of the voltage control loop and ensure high power factor and low
THD.
Main input to the multiplier. This pin is connected to the rectified mains voltage via a
resistor divider and provides the sinusoidal reference to the current loop. The voltage on
this pin is used also to derive the information on the RMS mains voltage.
Input to the PWM comparator. The current flowing in the MOSFET is sensed through a
resistor, the resulting voltage is applied to this pin and compared with an internal reference
to determine MOSFET’s turn-off.
A second comparison level at 1.7V detects abnormal currents (e.g. due to boost inductor
saturation) and, on this occurrence, shuts down the IC, reduces its consumption almost to
the start-up level and asserts PWM_LATCH (pin 8) high. This function is not present in the
L6563A.
Second input to the multiplier for 1/V
connected from the pin to GND. They complete the internal peak-holding circuit that
derives the information on the RMS mains voltage. The voltage at this pin, a DC level equal
to the peak voltage at pin MULT (pin 3), compensates the control loop gain dependence on
the mains voltage. Never connect the pin directly to GND.
Pin connection (top view)
PFC_OK
COMP
MULT
TBO
VFF
INV
CS
1
2
3
4
5
6
7
2
function. A capacitor and a parallel resistor must be
Description
14
13
12
11
10
9
8
Vcc
GD
GND
ZCD
RUN
PWM_STOP
PWM_LATCH
L6563 - L6563A