Envision EN-7220, Service Manual

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EN7220 Service Manual
10
4.3 Power Supply Requirements
4.3.1 Input Requirements
INVERTER MAX BRINGTHNESS (Vadj:5.0v), LOAD=120K Ω X4(ROOM TEMPERATURE 25 ℃ ±4 ℃
)
ITEM SYMBOL MIN. TYP. MAX. UNIT REMARK
Input voltage
Vin
10.8 12 13.2 V
Input current Iin 2250 2500 mA FOR 4 LOAD
Output Current Iout 6.0 6.5 7.0 mA FOR 1 LOAD
Frequency
F 50.0 55.0 60.0 KHZ
FOR 1 LOAD
H.V open
Vopen
1450 1600 1750 Vrms NO LOAD
H.V Load
Vload
710 810 910 Vrms RL=120K Ω
Start voltage Vst
1650 1750 1850 Vrms RL=CCFL
Protect delay time PDT
0.4 1 4 Sec
4.3.2 Output Requirements
INVERTER MIN BRINGTHNESS (Vadj:0.0v), LOAD=120K Ω X4(ROOM TEMPERATURE 25 ℃ ±4 ℃
)
ITEM SYMBOL MIN. TYP. MAX. UNIT REMARK
Input voltage
Vin
10.8 12 13.2 V
Input current Iin 660 750 mA FOR 4 LOAD
Output Current Iout 3.0 3.5 4.0 mA FOR 1 LOAD
Frequency
F 50.0 55.0 60.0 KHZ
FOR 1 LOAD
H.V open
Vopen
1450 1600 1750 Vrms NO LOAD
Start voltage Vst
1650 1750 1850 Vrms RL=CCFL
H.V Load
Vload
350 450 550 Vrms RL=120K Ω