L6599 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'L6599' PDF : 36 Pages View PDF
Application information
Figure 25. Load-dependent operating modes: timing diagram
STBY
1.25V
fosc
L6599
50 mV
hys ter.
t
t
LVG
HVG
PFC_STOP
t
PFC
GATE-DRIVE
Resonant Mode
Burst-mode
Resonant Mode
Figure 26. How the L6599 can switch OFF a PFC controller at light load
Vcc
12
L6599
ZCD
100 kΩ
22 kΩ
BC547
BC547
9 PFC_STOP
L6561/2
L6599
9 PFC_STOP
L6563
PFC_OK
(AC_OK)
20/36
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