E-L6561D013TR Datasheet, PDF (5/13 Pages) STMicroelectronics – POWER FACTOR CORRECTOR

L6561
dently from the average output voltage. The precision in setting the overvoltage threshold is 7% of the ov-
ervoltage value (for instance ∆V = 60V ± 4.2V).
3.1 Disable function
The zero current detector (ZCD) pin can be used for device disabling as well. By grounding the ZCD volt-
age the device is disabled reducing the supply current consumption at 1.4mA typical (@ 14.5V supply volt-
age).
Releasing the ZCD pin the internal start-up timer will restart the device.
Figure 4.
OVER VOLTAGE
V_{OUT nominal}
40µA
I_SC ^10µA
E/A OUTPUT
2.25V
DYNAMIC OVP
STATIC OVP
Figure 5. Overvoltage Protection Circuit
+Vo
R1
R2
Ccomp.
1
-
E/A
+
2.5V
∆I
∆I
2
-
+
2.25V
D97IN591
40µA
D97IN592A
X
PWM
DRIVER
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