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L6566B View Datasheet(PDF) - STMicroelectronics

Part Name
Description
MFG CO.
L6566B
ST-Microelectronics
STMicroelectronics ST-Microelectronics
'L6566B' PDF : 51 Pages View PDF
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)
VZCD>VZCDt
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
VCOMP
=VCOMPHi
VSS >
VSSDIS
VCOMP
=VCOMPHi
VSS >
VSSLAT
Auto
restart(2)
5
1.46
5(6)
VSS
VCOMPHi
<VSSLAT(3)
(6)
0
Latched 13.5 0.33 0
0
0
0
Short circuit
protection
Output short
circuit
protection
VCOMP
=VCOMPHi
VSS >
VSSDIS(4)
VCOMP
=VCOMPHi
VSS >
VSSLAT(6)
Auto
restart
5 1.46 0
Latched 13.5 0.33 0
VSS
VCOMPHi
<VSSLAT(6)
(5)
0
0
0
Transformer
saturation or
VCS >
VCSDIS
2nd OCP
shorted
secondary
for 2-3
consecutive
Latched
5 0.33 0
0
diode
switching
protection
cycles
0
0
Externally
settable
overtempera VDIS>VOTP Latched 13.5 0.33 0
0
ture
OTP
protection
0
0
Internal
thermal
Tj > 160oC
Auto
restart(5)
5 0.33 0
0
shutdown
0
0
Brownout
Mains
undervoltag
e protection
VAC_OK <
Vth
Auto
restart
5 0.33 0
0
0
0
Reference
drift
VREF drift
protection
VREF > Vov Latched
13.5 0.33
0
0
0
0
Shutdown1
Gate driver
disable
VFF > Voff
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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