DC-AC INVERTER UNIT - Power

DC-AC INVERTER UNIT
PS-P1212B-091 (8W DOUBLE OUTPUT WITH DIMMING FUNCTION)
(MODIFICATION)
DESCRIPTION:
This DC to AC Inverter was developed for many other low LCD
Backlight power supply as low profile applications, either for LCD
Optimized for Sharp: LQ121S1DG41
APPLICABLE LCD:
10 to 15 inches double lamp type
Lamp Voltage
600V
Lamp Current
5,5mA
Lamp Start Up Voltage 1700Vrms (Vin : 12V)
FEATURES :
Current Feedback Circuit
High Efficiency
Low noise with voltage resonant circuit
Regulated output current
TEMPERATURE & HUMDITY :
Operating Temperature Range
Storage Temperature Range
Humidity
-10 °C ~ +70°C
-30 °C ~ +85°C
95 %RH max
DIMENSIONS :
No.
1
2
3
Part Discription
PCB
Connector CN1
Connector CN2; CN3
Qty.
1
1
2
Material
UL94V-0 (FR-4 or CEM-3)
53261-0790
SM02(8.0)B-BHS-1
21.5±0.5
14±0.3
CN1
Unit : mm
Weight :21.2g typ.
Note
t=1.0mm
Molex
JST
Power Systems – The Power Solution
Web:
Email:
www.Power-Systems.de
Info@Power-Systems.de
All specification are subject to change without notice.
Address: Dörnet 8 ; 74360 Ilsfeld-Auenstein / Germany
Tel. :
+ 49 / 70 62 / 67 59 - 6
Fax:
+ 49 / 70 62 / 67 59 - 80
Page ( 1 / 4 )
VER, 29 Juni 2003
DC-AC INVERTER UNIT
PS-P1212B-091 (8W DOUBLE OUTPUT WITH DIMMING FUNCTION)
Input Side CN1:
Pin No. Symbols
CN 1-1
Vin
CN 1-2
CN1-3
GND
CN1-4
(MODIFICATION)
Output Side CN2:
Output Side CN3:
Pin No. Symbols Ratings
VHIGH1 600Vrms
CN 2-1
N.C.
CN 2-2
VLOW1
(2V)
CN 2-3
Ratings
10.8~13.2V
0V
Pin No. Symbols Ratings
VHIGH2 600Vrms
CN 3-1
N.C.
CN 3-2
VLOW2
(2V)
CN 3-3
0~0.4V:OFF /
2.5V~Vin: ON
0V / 5V
The warning
Vst
output 5V in
CN 1-6
abnormal
circumstances
CN 1-7 Vbr / Rbr 0~2.5V / 0~50k Ω
CN 1-5
Vrmt
ELECTRICAL CHARACTERISTICS :
Conditions
Items
Symbols
Output
Current
Iout
Vin [V] Ta [°C]
Iin1
Iin2
F
Input Current
Frequency
Open Circuit
Vopen
Voltage
Dimming
Iout1/Iout2
Function
W arning
Output
Vst
Specification
RL1 [KΩ ] //CL1 [pF] Vbr [V] /
RL2 [KΩ ]//CL2 [pF] VR [Ω ]
12±1.2
-10~70
23±5
12±0.6
-10~70
12±0.6
-10~70
85~95//5
90//5
90//5
85~95//5
85~95//5
12±1.2
-10~70
∞
12±1.2
12±0.6
-10~70
23±5
85~95//5
90//5
85~95//5
∞
12±1.2
-10~70
∞
85~95//5
85~95//5
0
0
0
0
0
/
/
/
/
/
Vrmt [V] Min. Typ. Max.
0
0
0
0
0
5±0.25
0±0.25
5±0.25
0/0
5±0.25
2.5 / 50k
5±0.25
0/0
5±0.25
5±0.25
4.8
5
35
5,5
5,5
0.8
40
1500 1700
6,2
6
1.0
1
45
Unit
mArm s
Adc
mAdc
kHz
-
Vrm s
mArm s
1.1
1.2
2.0
2.0
2.9
2.8
4.5
5.0
5.5
-
0
0.5
Vdc
DIMMING CHARACTERISTICS (Reference)
6,0
Iout (mArms)
5,0
4,0
3,0
2,0
1,0
0,0
0,0
0,5
1,0
1,5
2,0
2,5
Vbr (VDC)
Power Systems – The Power Solution
Web:
Email:
www.Power-Systems.de
Info@Power-Systems.de
All specification are subject to change without notice.
Address: Dörnet 8 ; 74360 Ilsfeld-Auenstein / Germany
Tel. :
+ 49 / 70 62 / 67 59 - 6
Fax:
+ 49 / 70 62 / 67 59 - 80
Page ( 2 / 4 )
VER, 29 Juni 2003
DC-AC INVERTER UNIT
PS-P1212B-091 (8W DOUBLE OUTPUT WITH DIMMING FUNCTION)
(MODIFICATION)
APPLICATION (for example)
Voltage Dimming Type
Iin
Q6
CN1-1,2
Vin
A
V
CN1-3,4
GND
a
b
C10
6
CN2-1
Vhigh
9
CN3-1
Vhigh
2
Vin 10.8~13.2V
Vrmt 5V
T1
1
3
4
RL
CN1-5
Vrmt
A
SW
Vbr 0~2.5V
Vst
RL
5
CN1-7
Vbr
CN3-3
Vlow
CN1-6
Vst
CN2-3
Vlow
A
Iout2
Iout1
V
1000:1
PROBE
F
V
TEST CIRCUIT
Power Systems – The Power Solution
Web:
Email:
www.Power-Systems.de
Info@Power-Systems.de
All specification are subject to change without notice.
Address: Dörnet 8 ; 74360 Ilsfeld-Auenstein / Germany
Tel. :
+ 49 / 70 62 / 67 59 - 6
Fax:
+ 49 / 70 62 / 67 59 - 80
Page ( 3 / 4 )
VER, 29 Juni 2003
DC-AC INVERTER UNIT
PS-P1212B-091 (8W DOUBLE OUTPUT WITH DIMMING FUNCTION)
(MODIFICATION)
Note 1.
For circuit connection, please prefer to test circuit diagram
Note 2.
Please use minimum of 2mm clearance (all directions) between inverter high voltage area and any
conductors. Please refer to mechanical drawing for marking of high voltage area.
Note 3.
Open voltage (strike voltage) is measured across the transformer secondary winding at no load as the
reading at the output connector would be less than the actual value
Note 4.
If the start voltage falls below Cold Cathode Tube strike voltage, the CCFL will not light up easily
specially at lower ambient temperature. Please review mounting instruction to avoid any abnormal
operation due to coupling/leakage capacitance of inverter high voltage area to any surrounding
conductor.
Note 5.
Please check your lamp characteristic for minimum operational current and set the limit point in your
design to avoid flickering and/or abnormal operation.
Note 6.
For proper operation of circuit protection (FUSE or IC PROTECTOR), please use minimum of 2A
capacity for input power supply.
Power Systems – The Power Solution
Web:
Email:
www.Power-Systems.de
Info@Power-Systems.de
All specification are subject to change without notice.
Address: Dörnet 8 ; 74360 Ilsfeld-Auenstein / Germany
Tel. :
+ 49 / 70 62 / 67 59 - 6
Fax:
+ 49 / 70 62 / 67 59 - 80
Page ( 4 / 4 )
VER, 29 Juni 2003