This approval is the description related to every electrical and structural specifications
and reliability For Power Supply Unit (LGD FHD : LGP42-10LF, AUO FHD(HD) : LGP42-10LA,
CMO FHD : LGP42-10LC ) used on 42 inch LGE LCD TV.
1.3 Product name
Product name : LGD FHD : PLHF-L923A, AUO FHD(HD) : PLHF-L923B,
CMO FHD : PLHF-L923C
Revision code : 2.0
2. SPECIFICATION
Rev 2.1
2.1 Input Requirements
Nominal Input VoltageAC 100V to AC 240V
Input Voltage VariationAC 90V to AC 264V
Under 3.5Arms . (at 100Vac & Nominal Load)
Input Current
Under 1.5Arms . (at 240Vac & Nominal Load)
Nominal Frequency50 / 60 Hz
Frequency Variation Range47 Hz to 63 Hz
PhaseSingle
Leakage Current0.7mA_peak. (100Vac ~ 240Vac)
Surge Immunity
± 4kV / 1000ns / 0˚ to 360˚
Hold-up TimeMore than 20ms at 100Vac and maximum output load
Lightning Surge2kA Normal, Common Mode
Inrush Current
2.1.1 Power Factor
Over than 0.9 at 90 – 264Vac & max load condition
PLHF-L923A/B/C (REV.2.1)
80A zero-pk max
at cold start and any specified line, load, and temperature
conditions.
12
Date: 2011. 04. 28
10L 42” LCD TV Power specification
2.2 Power Output Characteristics
Rev 2.1
Output
Voltage
Variable range
[V]
Rated Current
(Min, Max)
[Amean]
0.3W Under(15mA)
Voltage
Regulation
[V]
--
Ripple
Voltage
[mVp_p]
3.5V
(ST-BY)
3.23V ~ 3.57V
1.9A (0.8~1.9)
-250 mVp_p
(ON condition)
12V11.4V ~ 12.6V2.8A (0.35~2.8)± 5%350 mVp_p
20V17V ~ 25.2V1.1A (0.07~1.1)-15% ~ +26%500 mVp_p
* On Condition : In a moment of Power_ON Signal activated, the current of 3.5V output
should be limited within 40mA(Max) at LCD TV condition for stability.
Do not turn “Power_ON” Signal on at the load condition of 3.5V output, more than 40mA.
* Total regulation for each output circuit includes the results of input voltage variation,
load variation, warm-up drift and temperature change.
* The following instruments shall be used for measuring ripple noise.
1. Probe having impedance ratio of 1:1.
2. Oscilloscope having frequency characteristic of 100MHz or more.
Test Point : power output 각 pin
Add Electrolytic Capacitor 47㎌ + 0.1㎌
Power Supply Unit
Output Voltage
700mm
※ Ripple and noise are measured at the end of output cable which are added a 0.1uF ceramic
capacitor and 47uF electrolytic capacitor. ( connected parallel )
+
Load
Oscilloscope
Measurement point
2.2.1 Stand By Power Consumption
Output Voltage3.5V (STBY)12V20V
Load [A]0.015
Wattage [W]Less than 0.3 Under (230Vac / 50Hz)
PLHF-L923A/B/C (REV.2.1)
13
Don’t Care (Power-Off)
Date: 2011. 04. 28
10L 42” LCD TV Power specification
2.3 Inverter Output Characteristics
“When doing inverter test, GND should be reinforced”
2.3.1 LGD FHD LGP42-10LF (EAY60869402)
ItemSymbolConditionMinTypMaxUnitRemarks
Rev 2.1
PFC
Voltage
Control
Voltage
Input
Current
Input
Power
Back light
ON/OFF
Control
Analog
Dimming
Control
VPFC
VC
Iin
(Max)
Pin
Lamp ON=High3.03.35.0
VON/OFF
Lamp OFF=Low0.0-0.8
A-DIM--1.653.3Vdc
-380390400
-11.41212.6
Vin=390V,
A-DIM=1.65V
B-DIM=3.3V
Vin=390V,
A-DIM=1.65V,
B-DIM=3.3V
-0.4-Arms-
-154-W-
1차측(HOT)
Vdc
2차측(COLD)
Vdc-
1.65V : Normal
3.3V : 매장mode
Lamp
Voltage
Lamp
Current
PWM Duty
Ratio
Operating
Frequency
Open Lamp
Voltage
Striking timeTs1.5-3.0sec-
Vout
(Normal)
Iout
(Normal)
Iout
(Min)
Iout
(Max)
Fo
Vopen
A-DIM=1.65V
B-DIM=3.3V
A-DIM=1.65V
B-DIM=3.3V
B-DIM=3.3V
(Input Duty : 20%)
B-DIM=3.3V
(Input Duty : 100%)
A-DIM=1.65V
B-DIM=3.3V
No load,
Vin=390V,
A-DIM=1.65V
B-DIM=3.3V
84010401240Vrms
123136149mArmsEEFL:16ea
51015
%
100--
4748.550KHz-
1125--VrmsOne side
One side
2시간 Aging후
Output Current
기준
(120Hz)
PLHF-L923A/B/C (REV.2.1)
14
Date: 2011. 04. 28
10L 42” LCD TV Power specification
“When doing inverter test, GND should be reinforced”
2.3.2 AUO FHD(HD) LGP42-10LA (EAY60869403)
ItemSymbolConditionMinTypMaxUnitRemarks
Rev 2.1
PFC
Voltage
Control
Voltage
Input
Current
Input
Power
Back light
ON/OFF
Control
Analog
Dimming
Control
VPFC
VC
Iin
(Max)
Pin
Lamp ON=High3.03.35.0
VON/OFF
Lamp OFF=Low0.0-0.8
A-DIM--1.653.3Vdc
-380390400
-11.41212.6
Vin=390V,
A-DIM=1.65V
B-DIM=3.3V
Vin=390V,
A-DIM=1.65V,
B-DIM=3.3V
-0.8-Arms-
-108-W-
1차측(HOT)
Vdc
2차측(COLD)
Vdc-
1.65V : Normal
3.3V : 매장mode
Lamp
Voltage
Lamp
Current
PWM Duty
Ratio
Operating
Frequency
Open Lamp
Voltage
Striking timeTs1.5-3.0sec-
Vout
(Normal)
Iout
(Normal)
Iout
(Min)
Iout
(Max)
Fo
Vopen
A-DIM=1.65V
B-DIM=3.3V
A-DIM=1.65V
B-DIM=3.3V
B-DIM=3.3V
(Input Duty : 20%)
B-DIM=3.3V
(Input Duty : 100%)
A-DIM=1.65V
B-DIM=3.3V
No load,
Vin=390V,
A-DIM=1.65V
B-DIM=3.3V
7509501150Vrms
125135145mArmsEEFL:14ea
51015
%
100--
616263KHz-
1480--VrmsOne side
One side
2시간 Aging후
Output Current
기준
(120Hz)
PLHF-L923A/B/C (REV.2.1)
15
Date: 2011. 04. 28
10L 42” LCD TV Power specification
“When doing inverter test, GND should be reinforced”
2.3.3 CMO FHD LGP42-10LC (EAY60869405)
ItemSymbolConditionMinTypMaxUnitRemarks
Rev 2.1
PFC
Voltage
Control
Voltage
Input
Current
Input
Power
Back light
ON/OFF
Control
Analog
Dimming
Control
VPFC
VC
Iin
(Max)
Pin
Lamp ON=High3.03.35.0
VON/OFF
Lamp OFF=Low0.0-0.8
A-DIM--1.653.3Vdc
-380390400
-10.81213.2
Vin=390V,
A-DIM=1.65V
B-DIM=3.3V
Vin=390V,
A-DIM=1.65V,
B-DIM=3.3V
-0.52-Arms-
-130150W-
1차측(HOT)
Vdc
2차측(COLD)
Vdc-
1.65V : Normal
3.3V : 매장mode
Lamp
Voltage
Lamp
Current
PWM Duty
Ratio
Operating
Frequency
Open Lamp
Voltage
Striking timeTs1.5-3.0sec-
Vout
(Normal)
Iout
(Normal)
Iout
(Min)
Iout
(Max)
Fo
Vopen
A-DIM=1.65V
B-DIM=3.3V
A-DIM=1.65V
B-DIM=3.3V
B-DIM=3.3V
(Input Duty : 20%)
B-DIM=3.3V
(Input Duty : 100%)
A-DIM=1.65V
B-DIM=3.3V
No load,
Vin=390V,
A-DIM=1.65V
B-DIM=3.3V
89010601290Vrms
115125135mArmsEEFL:14ea
51015
%
100--
616263KHz-
1600--VrmsOne side
One side
2시간 Aging후
Output Current
기준
(120Hz)
PLHF-L923A/B/C (REV.2.1)
16
Date: 2011. 04. 28
10L 42” LCD TV Power specification
Load 부가 순서 : T1T2T3T4
T2 : Min 10ms
T3 : Min 5ms
10L Aging Sequence
0.1A
Full load 80%
3.5V
20V
12V
인버터
Full load 80%
Full load 80%
Full load 80%
T1
T2 T3
T4
Ac Power ON
Load 부가 순서 : T1T2T3T4
T2 : Min 10ms
T3 : Min 5ms
10L Aging Sequence
0.1A
Full load 80%
3.5V
20V
12V
인버터
Full load 80%
Full load 80%
Full load 80%
T1
T2 T3
T4
Ac Power ON
2.4 Environment Requirement
Operating Temperature Range-10℃ to 40℃
Operating Humidity Range30 to 85 %
Storage Temperature Range-25 to 85 deg.
Storage humidity Range5 to 90 %
Rev 2.1
(60℃:No Hardware Failure, TV SET Condition)
MTBF
50,000 hour
(Mean Time Between Failure)
Cooling ConditionNatural Air
Shock98 ㎨
Shock test consists of pivoting the power supply,
from one edge of it’s bottom side, on a flat surface
(such as wood having thickness of 10mm or more)
and allowing the opposite edge to fall from a height
of 50mm to this surface.
The test is performed three times on each edge of
the bottom side of the power supply
2.5 Dielectric Strength Voltage and Insulation Resistance
Dielectric
Strength Voltage
AC-DC 1.5K VAC 3 SEC 10 mA.
Between Primary and All Secondary Circuits.
Safety
Insulation
Resistance
* Above tests are performed at room temperature in non-condensing atmospheric
conditions
* Frame grounds are connected to secondary circuits.
2.6 Burn-in
More than 1 hours at 45℃(±5℃), Normal input voltage.
AC on/off must be test 1 time after burn-in.
PLHF-L923A/B/C (REV.2.1)
80% Load of specification.
Insulation resistance shall be more than 8M ohm (at DC 500V)
Between Primary Live, Neutral line and Secondary.
17
Date: 2011. 04. 28
10L 42” LCD TV Power specification
2.7 Interface
AppellationExplanationSignal DirectionAction
Rev 2.1
POWER ONVcc Circuit ON/OFFInput
Hi : Vcc ON
Low : Vcc OFF
2.8 Product Safety
Safety
Design to meet the requirements as follows
Safety Standards to be applied
UL60950, IEC60950, IEC60065 and 60950
Design to meet the requirements as follows
EMI/RFI Standards to be applied
FCC and EN55020, EN55013 Class B
with 4dB minimum margin.
2.9 Construction
WeightLess than 1.0kg
Unit Size196(W) X 246(D) X 21(H, Max, Tolerance ±2mm)
2.10 Function of protection
ProtectionOutput CircuitTrip pointNotes
STBY 3.5V12A ~Latch
Over Current
12V6A ~Latch
20V3A ~Latch
STBY 3.5V-Latch
Short Circuit
12V-Latch
20V-Latch
* This Power Supply has above-mentioned protections.
* Short circuit protection between different output terminals is not considered.
* Trip point for over voltage indicates the operating point when the output voltage
slowly increases.
* The conditions of Over Current measurement
Multi output(3.5V,12V,20V) is nominal load state except an over current
measurement.
PLHF-L923A/B/C (REV.2.1)
18
Date: 2011. 04. 28
10L 42” LCD TV Power specification
2.11 Sound Noise Characteristics
PSU Noise Specification
22.5 dB(a) / 20.u Pa 2.0E-5 Pa
(1/1 octave, A-weighting, to 1khz ~ 16khz Total overall
Measure Location : Anechoic Room
Measure Condition : At a distance of 60cm mic
Full white pattern, at AC 110V/220V
The max specification
(measure 3 points, at PSU center and left & right on the side)
The switching regulator shall ON/OFF for 20,000 time at an
Interval of 10 sec at maximum load, after that electrical
Characteristics shall be satisfied.
The switching regulator is left at the operating guarantee
Minimum temperature for 2 hours without applying electricity.
After that power shall be turned on, and then the electrical
Characteristics shall be satisfied.
The switching regulator is left at minimum storage
Temperature for 96 hours or more.
Then the switching regulator is left at a room temperature
and humidity for 1 hour or more, after that electrical
characteristics shall be satisfied.
The switching regulator is 10 consecutive temperature cycle
that shown below is performed and then leave them at room
temperature and humidity for 1 hour or more.
After that, electrical characteristics shall be satisfied.
TimeTemperature
Heat cycle storage
4
test
5Heat shock test
30 minutes25℃
30 minutes25℃ -> -20℃
60 minutesMinimum storage temperature (-20℃)
30 minutes-20℃ -> 25℃
30 minutes25℃
30 minutes25℃ -> 70℃
60 minutesMaximum storage temperature (70℃)
30 minutes70℃ -> 25℃
Heat shock test performed under following conditions without
applying electricity and then leave them at room temperature
and humidity for 1 hour or more.
After that, electrical characteristics shall be satisfied.
Condition : -45℃(30minutes), 120℃(30minutes),
Switching time : Less than 5 minutes, 200 cycles.
PLHF-L923A/B/C (REV.2.1)
26
Date: 2011. 04. 28
10L 42” LCD TV Power specification
2.17 Mechanical Characteristics
No.Test ItemTest method
1Appearance
Rev 2.1
There shall be no contaminant or dirt on the switching
regulator which has adverse effect on electrical
characteristics.
There shall be no excessive unevenness or scratches on the
plated or painted surface.
While applying electricity :
Vibration frequency : 5 ~ 100Hz
Acceleration : 4.9 m/s∧2
Vibration in X,Y,Z direction for 30 minutes
2Vibration
3Shock
While applying electricity :
Vibration frequency : 5 ~ 100Hz
Acceleration : 14.7 m/s∧2
Vibration in X,Y,Z direction for 30 minutes
After that electrical characteristics shall be satisfied.
There shall be no damage to appearance and construction.
Shock : 98 m/s∧2
On the oak more than 10mm thickness with the flat face,
raise the one side for 50mm, and it carries out each side
free fail for three sides.
There shall be no damage to appearance and construction.
PLHF-L923A/B/C (REV.2.1)
27
Date: 2011. 04. 28
10L 42” LCD TV Power specification
Schematic Diagram
Rev 2.1
PLHF-L923A/B/C (REV.2.1)
28
Date: 2011. 04. 28
OPTION2
1
P603
1
P601
AC2
BD101
3
1
4
A
2
1
C
Q201
E
9
10
12
13
14
1
2
R619
N.C
2
BD101
32",37":RS405M
42":RS1005M
AC1
VCC
N.C
R618
B
C230
0.1uF
50V
R228
22
R204
22
F100
32": T3.15A H 250V
37",42":T5A H 250V
L
SK101
DAC-11PM1
1%
R517
750K
1%
R516
750K
1%
R515
750K
1%
R514
750K
R513
750K
1%
IC501
STR-W6053N
5.6V
ZD503
R503
LGP32-10LF LGD FHD
LGP32-10LH LGD HD
LGP32-10LS Sharp FHD 120Hz
VA100
INR14D621
E
R518
750K
1%
C503
N.C
S/OCP
ZD501
1W
0.43
LF102,103
N
1
D/ST
3
6.8V
LF101
R519
1/4W
72*25
BL
OPTION1
1
C513
0.1uF
50V
4
FB
6
820K
1%
12
12
ZD504
37’
LLF-101
17mH9mH
LLF-103
LF101
OPTION1
SK102
16V
32’
LLF-100LLF-102
7.7mH
LLF-103
30mH
CX101
0.22uF
275V
3
PFC_MULTI
1M
HS2
VCC
GND
5
7
C502
0.1uF
50V
R509
J103
J104
J105
J106
L101
N.C
N.C
C506
R507
R508
2.7M
2.2M
N.C
34
34
42’
LLF-104
23mH30mH
CY101
470pF
R1001M1/2W
C504
N.C
ZD505
Q503
E
N.C
N.C
R510
0
ZD506
CX102
B
N.C
275V
0.47uF
CY102
C
N.C
R511
470pF
LGP37-10LF LGD FHD
LGP37-10LA AUO FHD(HD)
LGP42-10LF LGD FHD
EL65
LGP42-10LA AUO FHD (HD)
EL66
LGP42-10LC CMO FHD
EL67
LGP42-10LS Sharp FHD
C509
2
1
D502
D504
UF4007
50V
10uF
LF102
OPTION1
UF4007
R501
32’5D-15
37’
42’
3
4
C510
22uF
50V
C501
1000pF
100K
2W
1KV
1KV
D501
UF4007
R512
1/2W
2.2
R504
22
1/2W
RD
OPTION2
TH600TH601
N.C
N.C
2
1
R505
1K
EL68
EL69
EL70
EL71
EL72
EL73
5D-15
2.5D-152.5D-15
LF103
OPTION1
B+
D
C
ZD502
C505
4700pF
50V
J101,102
JUMPER
JUMPER
N.C
3
4
Q502
KTC3551T
E
B
R502
100K
16V
N.C
R506
3
3
4
4
T501
LPM-100
78
5
3
2
CY105
470pF
4
4
3
3
LB101LB102
CY103
470pF
CY104
470pF
R-TYPER-TYPE
2
1
EL817MB-DT
IC503
MMBT2222A
IC502
EL817MB-DT
1
2
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
REV 1.3
PCB P/N : EAX61124201
10L 32"37"42"NOR
2010. 9. 13
2INVERTER
3
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