Daewoo DLT-20W2, Service Manual

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10. Inverter
10-1. Feature
- Drive 6 lamps with one module
- Norminal current 6.5mArms for each lamp
- 21.6~26.4V input voltage operation
- Automatically balancing of lamp current
- Long lamp life with soft start
- Protection against lamp open or failure
- Built-in fuse
- Low EMI and spurious noise
10-2. Recommended operating conditions.
10-3. Connector and functional pin description
CN1 connector : 20022WR-14 (Yeonho or Equivalent)
CN1 - 1~5 V
IN
(DC Input : 24.0V)
CN1 - 6~10 G
ND
(Power supply return)
CN1 - 11 V
BRT
(Bright adjust : 0to 5.0V)
CN1 - 12 V
SLEEP
(Lamp on : Low, Lamp off : High)
CN1 - 13 External PWM pulse input for bright adjust
CN1 - 14 Lamp status(Lamp on : Low, Lamp off : High)
Parameter Symbol
Recommendation
Units
Min R.C. Max
Input supply voltage V
IN
21.6 24.0 26.4 V
Full bright lamp current I
O(MAX)
4.0 6.5 7.5 mArms
Brightness control voltage range V
BRT
0 5.0 V
Lamp on/off control voltage V
SLEEP
3.0 5.0 7.0 V
Lamp operating voltage(reference) V
O
850 Vrms
Operating ambient temperature range T
A
0 50 °C