L6585D_07 STMICROELECTRONICS [STMicroelectronics], L6585D_07 Datasheet - Page 20

• Manufacturer Part Number: L6585D_07
• Description: Combo IC for PFC and ballast control
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

Re–lamp
Table 7.
1.
2. Re-lamp cycle: the voltage at EOL-R pin must be first pulled above 4.63V and then released below it; this typically happens
3. This fault actually is a "board" fault so a lamp replacement is not effective to restart the ballast
20/25
(re-lamp comparator)
Over-voltage of PFC
Half-bridge current
Choke saturation
in case of lamp replacement. After a re-lamp cycle, a new pre-heating sequence will be repeated.
PFC open loop
Lamp absence
disconnection)
T
CH
Shut-down
End of life
(feedback
output
cycle: charge of the T
sense
Fault
Fault conditions
At turn-on: EOL-R
voltage higher than
4.63V
Run mode: EOL-R
voltage higher than
4.63V
EOL-R voltage outside
the limits of window
comparator
Ignition:
HBCS threshold
Run mode:
HBCSL threshold
Run mode:
HBCSH threshold
CTR voltage lower than
0.8V
PFCS voltage higher
than 1.6V
CTR voltage higher than
3.4V
CTR voltage higher than
3.4V AND INV voltage
lower than 1.2
CH
voltage up to 4.63V and discharge down to 1.50V following the R
Condition
– The T
– Drivers stopped
– IC low consumption (V
– All drivers stopped
– IC low consumption (V
– T
– drivers stopped at the end of T
– IC low consumption (V
– T
– In case of HBCS at the end of the
– IC low consumption (V
– T
– In case of HBCS at the end of the
– IC low consumption (V
– Drivers stopped
– IC low consumption (V
– Drivers stopped
– IC low consumption (V
– Drivers stopped
– IC low consumption (V
– PFC driver stopped
– Drivers stopped
– IC low consumption (V
ignition)
disappears)
cycle
control
TCH cycle, drivers stopped
control (frequency increase)
TCH cycle, drivers stopped
CH
CH
CH
cycle
cycle
cycle
CH
charge doesn’t start (no
(1)
(1)
(1)
IC behavior
with lamp voltage
(reset if the fault
with lamp voltage
cc
cc
CC
cc
cc
cc
cc
cc
cc
clamped)
clamped)
clamped)
clamped)
clamped)
clamped)
clamped)
clamped)
clamped)
CH
D
C
D
returns above 0.8V, the
When the CTR voltage
When the CTR voltage
IC driver restart with a
pre-heating sequence
(EOL-R below 4.63V)
3.26V (Typ.), the PFC
time constant;
Re-lamp cycle
Re-lamp cycle
Lamp replacement
Re-lamp cycle
Re-lamp cycle
Re-lamp cycle
Re-lamp cycle
Action required
driver restarts
returns below
L6585D
(2)(3)
(2)(3)
(2)
(2)
(2)
(2)