TDK CXA-P1212A-WJL User Manual
Power Supplies
DC to AC Inverters
For 1 Bulb, 8W Diming
This flat-bottomed DC to AC inverter is the one-connector, two-out
put type that is excellent for cold cathode lamps. This CXA series
inverter is suitable for back lighting of 6 to 12 inch class LCD panels.
FEATURES
• Optimum one-connector, two-output design for thin liquid crystal
panel displays.
• Two 4W lamp outputs(8W total output) give sufficient power
margin for use with 12 inch liquid crystal displays. 15 inch
displays can also be designed using an inverter of the same
size.
• This inverter carries a PMW(pulse modulation width) circuit,
TDK’s unique circuit design. This allows dimming of lighting over
a much wider range than is possible using conventional types of
dimmer circuits. The type of dimmer control can be selected as
desired, either voltage control(Vbr=0.45 to 1.6V) or resistance
control(VR:0 to 10k
• Built-in overcurrent protection circuit increases safety.
• Monitor brightness is always kept stable since the built-in current
feedback illumination stabilization circuit compensates for
inverter input voltage variation(±10%).
).
CXA Series CXA-P1212A-WJL
-
Ω
• The board backside is free of wiring pattern. Cost reduction and
simplified mounting are made possible by a design that only
uses one side of the board.
• Operational safety is increased by the use of two types of
insulation for high voltage components.
APPLICATIONS
Various types of color liquid crystal displays, computer touch panels, controllers, medical devices, ATMs, POS terminals, telecommunication terminals, microscope monitors, fishdetectors, ticket
sales machines, amusement arcade machines.
TEMPERATURE AND HUMIDITY RANGES
Temperature
range
Humidity range
Operating –10 to +70°C
Storage –30 to +85°C
95(%)RH max.
[Maximum wet-bulb temperature:38°C]
SHAPES AND DIMENSIONS
149±0.5
15 107±0.2
2
∗
CN1-1
CN1-7
(
)
4.5
1
∗
Substrate(PWB: Printed wiring board): Inflammable material UL 94V-0(FR-4 or CEM-3
2
∗
CN1: Molex Japan Co., Ltd. 53261-0790
3
∗
CN2: Japan Solderless Terminal Co., Ltd. SM03(7-D1)B-BHS-1
4
∗
Voltage protection insulating cover t=0.38mm
5
∗
Silicon plastic(for insulation and voltage protection
6
∗
Highly insulating design featuring a wiring pattern-free board back surface.
∗
2-ø3.5±0.1
1
)
4
∗
CXA-P1212A-WJL
Lot. 8Z
MADE IN JAPAN
6
∗
TERMINAL NUMBERS AND FUNCTIONS
CN1
Terminal No. Functions
CN1-1, -2 Vin Input voltage Edc:10.8 to 13.2V
CN1-3, -4 GND 0V
CN1-5 Vrmt Remote voltage:0/2.5V to Vin[2.5V to Vin operating]
CN1-6 Vbr/VR1 (0.45 to 1.6)V/0 to 10k
CN1-7 VR2 Open/0 to 10k Ω
∗
Connection determines choice between voltage dimmer control or
resistance dimmer control.
∗
Ω
∗
3
∗
CN2
5
∗
)
Weight: 20g typ.
Dimensions in mm
3.514±0.24
)
1.6
(
CN2
Terminal No. Functions
HIGH
CN2-1 V
CN2-2 V
CN2-3 NC
CN2-4 V
1 Output 1[High voltage]
HIGH
2 Output 2[High voltage]
LOW
Output[Low voltage]
21±0.510max.
Specifications which provide more details for the proper and safe use of the described product are available upon request.
All specifications are subject to change without notice.
Power Supplies
Iout1/Iout2Irms
(
mA
)
6
4
2
0
0246810
VR(kΩ)
DC to AC Inverters
For 1 Bulb, 8W Diming
CXA Series CXA-P1212A-WJL
EXAMPLE OF MODULATED LIGHT RANGE COMPARISON EXAMPLE OF INPUT VOLTAGE FLUCTUATION AND BRIGHT
Test unit: TDK test specification unit
Photometer: TOPCON BM-8
100
80
)
%
(
60
40
Brightness ratio
20
0
0 20406080100
CXA-P1212A-WJL
Brightness control ratio(VR or Vbr)(%
Conventional type
CXA-P1212A-WJL
Conventional type
)
100 to 40% light intensity
100 to 10% light intensity
NESS CHANGE MEASUREMENT
)
2
cd/m
(
Brightness
Backlight test unit: TDK test specification unit
Photometer: TOPCON BM-8
400
350
max.
300
250
Dimmer
200
150
Dimmer
100
50
0
10 10.4 10.8 11.2 11.6 12 12.4 12.8 13.2 13.6 14
316
204
67
321
209
73
Input voltage(V
)
320
208
74
ELECTRICAL CHARACTERISTICS
Item Specifications
6typ. 10.8 to 13.2 80 to 120 (0.45) 0 Maximum
Output current Irms(mA) Iout1, 2
6typ. 12 100 (0.45) 0 Maximum
1.5typ. 12 (100) (1.6) 10 Minimum
Oscillation
frequency
Open circuit
output voltage
(kHz) F
Erms(V) Vopen 1600min. 10.8 to 13.2
L (40) 10.8 to 13.2 120 0 0
Output power (W) Pout 8max. 10.8 to 13.2 80 to 120 (0.45 to 1.6) 0 to 10
1
Using voltage dimmer control.
2
Using resistance dimmer control.
Conditions
Vin(V) R
L
) Vbr(V)
∞
1
VR(k Ω)
(0.45 to 1.6) 0 to 10
∗2
Brightness
-
∗
∗
(k Ω
∗
TYPICAL CONNECTIONS
HIGH1
LOW
)
)
)
)
)
)
)
)
CN2-1(VHIGH1
CN2-2(V
CN2-4(V
SW1
b
c
d
CN1-1, 2(Vin
CN1-3, 4(GND
CN1-5(Vrmt
CN1-6(Vbr/VR1
CN1-7(VR2
Vin
10.8 to
13.2V
Vrmt
2.5 to
13.2V
(
0.45 to
1.6)V
SW1 Remote function a: on b: off
SW2 Dimmer control method c: voltage dimmer control, d: resistance dimmer control
Vbr
VR
0 to
10kΩ
a
SW2
)
CCFL
(
RL2
)
CCFL
(
RL1
Vbr vs. Iout CHARACTERISTICS VR vs. Iout CHARACTERISTICS
6
)
mA
(
4
2
Iout1/Iout2Irms
0
(
)(
0.45
Vbr(V
)
1.6
)
Specifications which provide more details for the proper and safe use of the described product are available upon request.
All specifications are subject to change without notice.
A422_CXAP1212
990120
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