Datasheet

Ballast section L6585DE
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Table 6. Table of faults
Fault
Active during
Condition IC behavior Required action
PH Ign Run
Fault with immediate activation of latched operating mode
Shutdown V
CTR
< 0.75 V
- Drivers stopped
- IC low consumption
(Vcc clamped)
V
CTR
> 0.75 V
(IC restarts with PH
sequence)
PFC feedback
disconnection
V
CTR
> 3.4 V
and
V
INV
< 1.2 V
- Drivers stopped
- IC low consumption
(Vcc clamped)
Board failure
Half bridge anti-
saturation
protection
Ignition:
V
HBCS
> 2.75 V
- Drivers stopped
- IC low consumption
Vcc clamped)
Turn off – turn on
sequence
Run mode:
V
HBCS
> 1.6 V
Fault with immediate activation of a non latched operating mode
PFC dynamic
over-voltage
V
CTR
> 3.4 V - PFC driver stopped
Wait for output
voltage reduction
PFC protection
over-current
V
PFCCS
> 1.7 V - PFC driver stopped
Wait for next starter
event
Fault with timed activation of latched operating mode
PFC static OVP V
COMP
< 2.25 V
- PFC driver stopped
- Tch cycle starts
- At the end of cycle, if V
COMP
<
2.25 V IC is latched
Check the mains
voltage
Lamp end-of-life
V
EOL
outside
allowed range
(set by R
EOLP
)
- Tch cycle starts
- At the end of the cycle if V
EOL
is out of range the IC is latched
Replace the lamp
with a new one
Lamp over-current
Ignition:
V
HBCS
> 1.6 V
- Frequency control activated
and Reduced Tch Cycle (RTC)
starts
- At the end of RTC the
threshold is reduced (1.05 V
during ignition and 0.82 V
during run mode)
- If V
HBCS
>reduced threshold IC
is stopped
Replace the lamp
with a new one
Run mode:
V
HBCS
> 1.05 V
Lamp ageing
causing hard
switching
V
HBCS
> 2.75 V
- After 350 subsequent hard
switching events IC is stopped
Replace the lamp
with a new one
9 9 9
9 9 9
9 9
9 9 9
9 9 9
9 9 9
9
9 9
9