ICL5101_16 Datasheet, PDF (30/44 Pages) Infineon Technologies AG – Resonant controller IC with PFC for LED driver

2.4.5
Protection Matrix
Description of Fault
Characteristics of Fault
ICL5101
Functional Description
Operating Mode Detection is
active
Consequence
Supply voltage Vcc < 14.1V Below start-up
before power up
threshold
S 1µs
X
Prevents power up
Supply voltage Vcc < 10.6V Below UVLO
after power up
threshold
S 5µs
XX X
X
X
X
X
Power down,
Reset failure latch
Voltage at OTP pin > 1.6V
before power up
Overtemperature S 100µs _X
Prevents power up
Voltage at OTP pin > 3.2V Overtemperature F 620µs
X
Power down, latched
fault mode, 1 restart
Bus voltage < 12.5% of rated Open loop
level 10µs after power up
detection
S 1µs
X
Keep gate drives off, re-
start after Vcc hysteresis
Bus voltage < 12.5%
of rated level
Open loop
detection
N 1µs
X
X
X
X
X
Stops PFC FET until
VBUS > 12.5%
Bus voltage < 12.5%
of rated level
Shutdown option U 625ms
X
Power down, restart
when VBUS> 12.5%
Bus voltage < 75%
Under voltage U 84µs
Power down, 100ms
of rated level
X delay, restart directly
add. shut down delay 120µs
with saturation control
Bus voltage < 95% of rated Timeout max
level during start-up
start-up time
A 80ms
X
Power down, 200ms
delay, restart
Bus voltage > 105% of rated PFC overvoltage S 5µs
level 10µs after power up
X
Keep gate drives off, re-
start after Vcc hysteresis
Bus voltage > 109% of rated PFC overvoltage N 5µs
level in active operation
X
X
X
X
X
Stops PFC FET until
VBUS< 105%
Bus voltage > 109% of rated Inverter
level in active operation
overvoltage
U 625ms
X
Power down, restart
when VBUS<105%
peak level of output voltage Output
at Pin OVP above threshold overvoltage
F 620µs
X
Power down, latched
fault mode, 1 restart
Capacitive Load
Overload
operation below resonance
F 620µs
X
Power down, latched
fault mode, 1 restart
Voltage at PFCCS pin > 1.0V PFC
overcurrent
N 200ns
X
X
X
X
X
Stops on-time of PFC
FET immediately
Voltage at LSCS pin > 0.8V Inverter
current lim
N 200ns
X
Activates
saturation control
Voltage at LSCS pin > 1.2V Saturation
& 205mV/µs Slope in 0.8V Time OUT
F 237ms
X
Power down, latched
fault mode, 1 restart
Voltage at LSCS pin > 0.8V Ext. Sat. Time
& 205mV/µs Slope
OUT
F 625ms
X
Power down, latched
fault mode, 1 restart
Voltage at LSCS pin > 0.8V Inverter
overcurrent
F 500ns
X
Power down, latched
fault mode, 1 restart
Voltage at LSCS pin > 1.6V Inverter
overcurrent
F 500ns
XXXX
Power down, latched
fault mode, 1 restart
Voltage at LSCS pin > 0.8V Inverter
& VBUS > 109% (Surge)
overcurrent
A 500ns
X
X
Power down, restart
when VBUS<109%
After jump into latched fault mode F wait
200ms A single restart attempt after delay of internal timer
Reset of failure latch in run mode after
40s Reset of failure latch by UVLO or 40s in run mode
S = Start-up condition,
N = No fault,
A = Auto restart ,
U = Under voltage
F = Fault with a single restart, a second F leads to a latched fault / Note: all values @ typical 50 Hz mains frequency
Datasheet
30
Rev. 1.3, 2016-01-15