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Part Name
Description
L6566B View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
L6566B
Multi-mode controller for SMPS
STMicroelectronics
'L6566B' PDF : 51 Pages
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Application information
L6566B
Table 6. L6566B protections
Protection
Description
Caused by
IC
behavior
Vcc
restart
IC Iq
VREF
(V)
(mA) (V)
SS
VCOMP OSC
FMOD VFF
(V)
(V)
V
ZCD
>V
ZCDt
OVP
h
for 4
Auto
Output
overvoltage
consecutive
switching
restart
(1)
5
2.2
5
(6)
unchanged
(6)
0
0
protection
cycles
VFF >
VFFlatch
Latched 13.5 0.33 0
0
0
0
OLP
Output
overload
protection
V
COMP
=V
COMPHi
V
SS
>
V
SSDIS
V
COMP
=V
COMPHi
V
SS
>
V
SSLAT
Auto
restart
(2)
5
1.46
5
(6)
V
SS
V
COMPHi
<V
SSLAT(3)
(6)
0
Latched 13.5 0.33 0
0
0
0
Short circuit
protection
Output short
circuit
protection
V
COMP
=V
COMPHi
V
SS
>
V
SSDIS(4)
V
COMP
=V
COMPHi
V
SS
>
V
SSLAT(6)
Auto
restart
5 1.46 0
Latched 13.5 0.33 0
V
SS
V
COMPHi
<V
SSLAT(6)
(5)
0
0
0
Transformer
saturation or
V
CS
>
V
CSDIS
2
nd
OCP
shorted
secondary
for 2-3
consecutive
Latched
5 0.33 0
0
diode
switching
protection
cycles
0
0
Externally
settable
overtempera V
DIS
>V
OTP
Latched 13.5 0.33 0
0
ture
OTP
protection
0
0
Internal
thermal
T
j
> 160
o
C
Auto
restart
(5)
5 0.33 0
0
shutdown
0
0
Brownout
Mains
undervoltag
e protection
V
AC_OK
<
V
th
Auto
restart
5 0.33 0
0
0
0
Reference
drift
V
REF
drift
protection
V
REF
> V
ov
Latched
13.5 0.33
0
0
0
0
Shutdown1
Gate driver
disable
V
FF
> V
off
Auto
restart
5
2.5
5
unchanged
unchang
ed
1
0 unchanged
0
0
0 unchanged
0
0
0 unchanged
0
0
0
0
0
0
0
0
0 unchanged
0
0
uncha
nged
unchanged
42/51
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