ICL5101_16 Datasheet, PDF (28/44 Pages) Infineon Technologies AG – Resonant controller IC with PFC for LED driver

2.4.3
Fault Condition – Flow Chart Fault A: Auto Restart
ICL5101
Functional Description
Fault A
Auto Restart
Surge
Time OUT Start Up
(VBUS < 95%
for t > 80 ms)
INVERTER and PFC Gate OFF
Only at Inverter Over Current PFC Gate OFF
appr. 150µs Delayed
Power down Icc < 160µA
Wait 200ms
Delay Timer 1
Y
Fault Counter
<2
N
Start-up
Inverter Gates ON
PFC Gate ON
17.5V> Vcc >10.6V
f_Inv = f_FIXED
t > 80ms? N
from Power-Up
N
VBUS > 95%?
Y
Fault A
Timeout 80ms
Start-up
Y
End
Start-up
Wait for
VOTP < 1.3V
N _{VOTP < 1.3V}
Y
VOTP < 1.3V
wait min 100ms
Vcc > 14.0V?
N
Y
Power-up
Reset
Flag Skip
Start Up Procedure
Figure 23 Fault Condition A – Auto Restart
Datasheet
28
Vcc < 10.6V?
N
Y
UVLO
Reset all Latches
& Counters
Rev. 1.3, 2016-01-15