This manual is the latest at the time of printing, and does not
include the modification which may be made after the printing, by
the constant improvement of product
CAUTION:
1、
Use of controls, adjustments or procedures other than those specified herein may result in
hazardous radiation exposure.
CAUTION: T O REDUCE THE RISK OF
CAUTION
RISK RISK OF OF ELECTRIELECTRICC
SHOCK SHOCK DO DO NOT NOT OPEN.OPEN.
The lighting flash with arrowhead symbol, with an equilateral triangle is intended to
alert the user to the presence of uninsulated voltage within the products
enclosure that may be of sufficient magnitude to constitute a risk of electric shock to
the person.
The exclamation point within an equilateral triangle is intended to alert the user to the
presence of important operating and maintenance (servicing) instructions in the
literature accompanying the appliance.
ELECTRICAL SHOCK, DO NOT REMOVE
COVER (OR BACK). NO USER SERVICEABLE
PARTS INSIDE. REFER SERVICING TO
QUALIFIED SERVICE PERSONNEL.
dangerous
WARNING: TO REDUCE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT
EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.
2
IMPORTANT SAFETY INSTRUCTIONS
CAUTION:
Read all of these instructions. Save these instructions for later use . Follow all Warnings and
Instructions marked on the audio equipment.
1. Read Instructions- All the safety and operating instructions should be read before the product is operated.
2. Retain Instructions- The safety and operating instructions should be retained for future reference.
3. Heed Warnings- All warnings on the product and in the operating instructions should be adhered to.
4. Follow Instructions- All operating and use instructions should be followed.
FOR YOUR PERSONAL SAFETY
1.When the power cord or plug is damaged or frayed, unplug this television set from the wall outlet and refer servicing to
qualified service personnel.
2.Do not overload wall outlets and extension cords as this can result in fire or electric shock.
3.Do not allow anything to rest on or roll over the power cord, and do not place the TV where power cord is subject to
traffic or abuse. This may result in a shock or fire hazard.
4.Do not attempt to service this television set yourself as opening or removing covers may expose you to dangerous
voltage or other hazards. Refer all servicing to qualified service personnel.
5.Never push objects of any kind into this television set through cabinet slots as they may touch dangerous voltage
points or shor t out parts that could result in a fire or electric shock. Never spill liquid of any kind on the television set.
6.If the television set has been dropped or the cabinet has been damaged, unplug this television set from the wall outlet
and refer servicing to qualified service personnel.
7.If liquid has been spilled into the television set, unplug this television set from the wall outlet and refer servicing to
qualified service personnel.
8.Do not subject your television set to impact of any kind. Be particularly careful not to damage the picture tube surface.
9.Unplug this television set from the wall outlet before cleaning. Do not use liquid cleaners or aerosol cleaners. Use a
damp cloth for cleaning.
10.1. Do not place this television set on an unstable cart, stand, or table. The television set may fall, causing serious injury
to a child or an adult, and serious damage to the appliance . Use only with a car t or stand recommended by the
manufacturer, or sold with the television set. Wall or shelf mounting should follow the manufacturer s instructions, and
should use a mounting kit approved by the manufacturer.
10.2. An appliance and car t combination should be moved with care. Quick stops, excessive force, and uneven surfaces
may cause the appliance and cart combination to overturn.
3
PROTECTION AND LOCATION OF YOUR SET
11.Do not use this television set near water ... for example, near a bathtub, washbowl, kitchen sink, or laundry tub, in a
wet basement, or near a swimming pool, etc.
Never expose the set to rain or water. If the set has been exposed to rain or water, unplug the set from the wall
outlet and refer servicing to qualified service personnel.
12. Choose a place where light (artificial or sunlight) does not shine directly on the screen.
13. Avoid dusty places, since piling up of dust inside TV chassis may cause failure of the set when high humidity persists.
14. The set has slots, or openings in the cabinet for ventilation purposes, to provide reliable operation of the receiver, to
protect it from overheating. These openings must not be blocked or covered.
Never cover the slots or openings with cloth or other material.
Never block the bottom ventilation slots of the set by placing it on a bed, sofa, rug, etc.
Never place the set near or over a radiator or heat register.
Never place the set in enclosure, unless proper ventilation is provided.
a built-in
PROTECTION AND LOCATION OF YOUR SET
15.1. If an outside antenna is connected to the television set, be sure the antenna system is grounded so as to provide some
protection against voltage surges and built up static charges, Section 810 of the National Electrical Code, NFPA No.
70-1975, provides information with respect to proper grounding of the mast and supporting structure, grounding of the
lead-in wire to an antenna discharge unit, size of grounding conductors, location of antenna discharge unit, connection
to grounding electrode, and requirements for the grounding electrode.
EXAMPLE OF ANTENNA GROUNDING AS PER NATIONAL ELECTRICAL CODE INSTRUCTIONS
EXAMPLE OF ANTENNA GROUNDING AS PER
NATIONALELECTRICAL CODE
ANTENNA
LEAD- INWIRE
GROUND CLAMP
ELECTRIC SERVICE
EQUIPMENT
NEC-NATIONALELECTRICAL CODE
ANTENNA DISCHARGE
UNIT (NEC SECTION
810-20)
GROUNDING
CONDUCTORS
(NECSECTION 810-21)
GROUND CLAMPS
POWER SERVICE GROUNDING
ELECTRODE SYSTEM
(NEC ART 250. PARTH)
15.2. Note to CATV system installer : (Only for the television set with CATV reception)
This reminder is provided to call the CATV system attention to Article 820-40 of the NEC that provides
installer s
guidelines for proper grounding and, in particular, specifies that the cable ground shall be connected to the grounding
system of the building, as close to the point of cable entry as practical.
16. An outside antenna system should not be located in the vicinity of overhead power lines or other electric lights or power
circuits, or where it can fall into such power lines or circuits. When installing an outside antenna system, extreme care
should be taken to keep from touching such power lines or circuits as contact with them might be fatal.
17. For added protection for this television set during a lightning storm, or when it is left unattended and unused for long
periods of time, unplug it from the wall outlet and disconnect the antenna. This will prevent damage due to lightning
and power-line surges.
4
OPERATION OF YOUR SET
18.
This television set should be operated only from the type of power source indicated on the marking label. If you are not
sure of the type of power supply at your home, consult your television dealer or local power company. For television
sets designed to operate from batter y power, refer to the operating instructions.
19. If the television set does not operate normally by following the operating instructions, unplug this television set from the
wall outlet and refer servicing to qualified service personnel. Adjust only those controls that are covered in the operating
instructions as improper adjustment of other controls may result in damage and will often require extensive work by a
qualified technician to restore the television set to normal operation.
20. When going on a holiday : If your television set is to remain unused for a period of time, for instance, when you go on
a holiday, turn the television set and unplug the television set from the wall outlet.
off
IF THE SET DOES NOT OPERATE PROPERLY
21. If you are unable to restore normal operation by following the detailed procedure in your operating instructions,
do not attempt any further adjustment. Unplug the set and call your dealer or service technician.
22. Whenever the television set is damaged or fails, or a distinct change in performance indicates a need for
service, unplug the set and have it checked by a professional service technician.
23. It is normal for some TV sets to make occasional snapping or popping sounds, particularly when being
turned on or off. If the snapping or popping is continuous or frequent, unplug the set and consult your
dealer or service technician.
FOR SERVICE AND MODIFICATION
24. Do not use attachments not recommended by the television set manufacturer as they may cause hazards.
25. When replacement parts are required, be sure the service technician has used replacement parts specified
by the manufacturer that have the same characteristics as the original part. Unauthorized substitutions
may result in fire, electric shock, or other hazards.
26. Upon completion of any service or repairs to the television set, ask the service technician to perform
routine safety checks to determine that the television is in safe operating condition.
5
2、Specification
Chassis
Target Market
CRT
Color System
(TV)
Sound System
(TV)
Sound System
(TV)
System (AV)
Power Supply
Standby
picture
TerminalRear RCA x *
matching CRT size21"21"
Slim CRT
PAL
PAL(BG DK I)
PAL(M N)
SECAM
NTSC
D/K
B/G
I
M
M/N
Global NICAM
German Stereo
BTSC
Sound effect
Woofer
Teletext
V-chip/ CCD
MONO(AV)
STEREO(AV)
PAL
PAL(M N)
NTSC
SECAM
AC 90-240V, 50/60Hz
AC 180-240V, 50/60Hz
AC 160-240V, 50/60Hz
AC 110, 50/60Hz
AC108V-132V 50/60Hz
<1W
<3W
<4W
<6W
<9W
<10W
<12W
Comb-f for NTSC (1H delay)
Comb-f for PAL/NTSC (4/2H
delay)
Rear SCART(Single)
S-Video (Rear or Side)
SY33SY33
S.AmericaAPAC/Russia
√√
★√
√
★√
√
★√
★√
★√
√
√
★√
★√(2for1)
√√
√√
AC90-270VAC90-270V
√√
√(built-in MCU)√(built-in MCU)
★2 input/ 1output★2 input/ 1output
★√★√
★√(2for1)
YPbPr
HDMI
Language
digital module DVB-T / ATSC
★√★√
English/Portuguese/French/ Spanish
(1)English/Russian/Arabic;
(2)English/Vietnamese/Thai;★
Thai Bilingual
3、Alignment Procedure
Method for Entering Factory Mode:
a. Production mode: Press the key [Fac] in remote control to enter or exit factory mode(But only
display 4 pages);
b. Engineer mode: Press key [DISPLAY] to display channel information(Setup for display picture
on bottom left of screen, press the number key [6][1][5][8] ;
c. Display “--PRODUCT--”,then press the key [MUTE] two times,the factory menu on the screen 。
The number on top right corner of factory menu is page number of factory menu. Press the key
[CH+/-] to adjust curser up or down。Press the key [VOL+/-] to change the value。When choose
the first top line, press [VOL+] / [VOL-] to choose the menu page。
d. Press key [sleep] to display factory menu in production mode. Please choose next page when display
factory menu。
e. Press key [0] to be shifted to one bright line status in production mode,. Press key [0] again to return factory
G-Y AMP 8 0…15
G-Y ANGLE 0 0/1
R/B GAIN 8 0…15
R/B ANGLE 8 0…15
PAL APC SW 0 0/1
OPT-V.PROTECT OFF OFF/ON
V.PROTECT TH.
0 0…3
2 0…3
31 0…31
OPT-ABL.P OFF OFF/ON
ABL-LOW LIMIT 63 0…63
*** PAGE 16 ***IF Init Range
OVER.MOD.SW OFF OFF/ON
OVER.MOD.LEVEL 2 0…15
PRE-SHOOT ADJ 0 0…3
OVER-SHOOT ADJ 0 0…3
VIDEO LEVEL 7 0…7
VIDEO.LVL.OFFSET 2 0…3
S.TRAP ADJ 4 0…7
IF VCO ADJ 2 0…3
4、Block Diagram
Antenna
AGC
IR1001 Key Board
Tuner
AV1
S V ideo Y
AV2
YCbCr
AV out
Scart
signal
Q101 IF
Preamplifier
IC001
24C16 EEPROM
C
Scart Audio
AV1 Audio
R/L
AV2 Audio
R/L
R/L
Z101
SAW
LBN3
383
48 49 51
63
64
I2C BUS
31
32
46
45
54
MUTE
61
26 29 36 30
IC201
LA76933
IFamplifier/ Video detection
/Sound detectionj/ Y&C
Separation/ Color decode/
Base color matrix/ Sync
separation/ display process/
AV switch/ MCU/ OSD
52
STB BY
5
12
IC901
4052
Electron
Switch
12
13
14
Q502/Q504/
Q506 V i deo
Preamplifier
IC301
17
LA78041
V-amplifier
44
21
Q401 T401 Q402
15 EW
AV Audio out
3
13
IC601
LA4235
2 Audio
8
12
Amplifie
V SCAN
FBP
FOCUS
H SCAN
SCREEN
T402
FBT
4/5 11 10
±14V 220V 6.3V
HV
5、Circuit Flow Introduction
1)、Chassis summarize
The main chip of SY33 chassis adopt IC LA76933 of SANYO company ,audio power
amplifier adopts IC LA42352,power supply adopts IC STRW6553, and vertical scan amplifier
adopts IC LA78041.The chassis has low cost and steady function, it has been adopts for
25M63,21M63 model.
2)、Base features
The unit TV supports PAL/DK.I,AV supports PAL/NTSC system, in 2XAV,1x S-video
3)、Unit Signal Flow Introduction
SY33 chassis circuit includes tuner, IF ,SAWF,LA76933 H/V scan circuit ,AV board, side AV
board, keypad board, USB board, power board. audio power amplifier circuit and power supply
circuit etc. The main ICs are LA78041,LA42352,HPC922-C,L7809CV,L7805CV, LA76933,
HCF4052 IC etc.
1)TV signal flow
RF from antenna enters tuner to be processed ( RF being inverted IF), and IF from pin11 of
TU101 passes R106 ,C110 to Q101 IF preamplifier .
After amplifying, IF signal enters pin1 of Z101 to filter and separate SIF and PIF via pin4 and
pin5 of Z101 into pin63 and pin64 of IC201(LA76933) to process PIF .
There are two ways output signal of process IF amplifier:
One is video signal, from pin60 of IC201 , after R227,R228 adjustment ,it is sent pin56 of
IC201 to process demodulation of picture.
Another way is sound signal, from pin5 of IC201 and passes C260 coupling。 The sound
signal is sent to pin1 and pin9 of IC901,after IC901 choosing, signal from pin3 and pin13 of
IC901 is sent to pin2 and pin4 of IC601 to process sound power amplification. After amplifying,
The signals from pin8 and pin12 of IC601 is sent to L/R speaker.
2) AV signal flow
AV1 signal process circuit.
Video signal of AV1from pin1 of P901 enters to pin46 of IC201 to decode process.
Sound signals of AV1from pin2 and pin3 of P901 input is sent to pin5 and pin 14 of IC901 to
choose , after being choosed, the signal flow same as TV sound.
AV2 signal process circuit.
Video signal of AV2 from pin4of P901 is sent to pin54 of IC201 to decode process.
Sound signals of AV2 from pin5 and pin6 of P901 is sent to pin1 and pin 12 to choose
signal,.After being choosed, the signal flow same as TV sound.
3) High-Definition signal flow.
Y signal from pin7 of P901 enters pin48 of IC201 to process video.
Cb signa from pin8 of P901 enters pin49 of IC201 to process video.
Cr signal from pin9 of P901 enters pin51 of IC201 to process video.
4) Sound signal flow
Volume control:
Sound signal from pin27 and pin28 of IC201 enters pin6 and pin13 of IC601 to be amplified
and be sent out form pin8 and pin12 of IC601.
Mute control:
Pin30 of IC201 sends mute control signal, and passes D002 to connect base of Q602,controls
the Q602 ON or OFF, the pin C of Q602 connects pin5 of IC601 to control mute normal
working .When Q602 off, pin5 of IC601 is high level. So pin8 and pin12 of sound signal output
to speaker, when MCU sent mute signal of high level,Q602 ON, it lets the pin5 of IC601 is low
level to shut down the sound signal of pin8/pin12 of IC601, the mute is working.
TU101 is a common tuner. The RF signal is processed by tuner inside circuit disposal :high
frequency amplifier 、mixing、 high frequency demodulation、AGC、AFT、PLL。Then IF output
signal from pinIF of TU101 passes preamplifier Q101 to enter SAW Z101. The PIF signal from
pin4 and pin5 of Z101, enters pin63 and pin64 of IC201 to be decoded.
• Accurateandadjustableovervoltage protection (latched
in TEA1506; safe restart in TEA1506A)
• Short winding protection
• Undervoltage protection (foldback during overload)
• Overtemperature protection
• Low and adjustable overcurrent protection trip level
• Soft (re)start.
APPLICATIONS
Besides typical application areas, i.e. TV and monitor
supplies, the device can be used in adapters and chargers
and all applications that demand an efficient and
cost-effective solution up to 150 W. Unlike the other
GreenChipII control ICs, the TEA1506 has no internal
high voltage start-up source and needs to be started by
means of an external bleeder resistor.
1
2
TEA1506P
TEA1506AP
3
4
8
7
6
5
2003 Sep 092
MDB504
Fig.1 Basic application diagram.
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2003 Sep 094
, full pagewidth
BLOCK DIAGRAM
Philips SemiconductorsProduct specification
GreenChipII SMPS control IC
V
CC
GND
CTRL
1
(2)
2
(3)
3
(6)
I
prot(CTRL)
3.8 V
−1
SUPPLY
MANAGEMENT
internal
FREQUENCY
UVLO start
supply
VOLTAGE
CONTROLLED
OSCILLATOR
CONTROL
POWER-ON
RESET
OVER-
TEMPERATURE
PROTECTION
UVLO
V
< 4.5 V
CC
or UVLO
(TEA1506AT)
LOGIC
UP/DOWN
COUNTER
LOGIC
SQ
R
Q
SQ
R
Q
100
mV
VALLEY
OVER-
VOLTAGE
PROTECTION
DRIVER
LEB
blank
OCP
I
prot(DEM)
clamp
soft
start
S2
8
DRAIN
(14)
4
DEM
(7)
6
DRIVER
(11)
I
ss
0.5 V
5
I
sense
(9)
TEA1506P; TEA1506AP;
TEA1506T; TEA1506AT
TEA1506P;
TEA1506AP
(TEA1506T;
TEA1506 AT)
Pin numbers in parenthesis represent the SO version.
MAXIMUM
ON-TIME
PROTECTION
Fig.2 Block diagram.
short
winding
0.88 V
OVERPOWER
PROTECTION
MDB505
Philips SemiconductorsProduct specification
GreenChipII SMPS control IC
TEA1506P; TEA1506AP;
TEA1506T; TEA1506AT
PINNING
SYMBOL
V
CC
GND23ground
CTRL36control input
DEM47input from auxiliary winding for demagnetization timing; overvoltage and
I
sense
DRIVER611gate driver output
HVS712, 13high voltage safety spacer; not connected
DRAIN814drain of external MOS switch; input for valley sensing and initial internal
n.c.−1, 4, 5, 8,10not connected
PIN
DESCRIPTION
DIP8SO14
12supply voltage
overpower protection
59programmable current sense input
supply
handbook, halfpage
V
CC
GND
CTRL
DEM
1
2
TEA1506P
TEA1506AP
3
4
MDB506
8
7
6
5
DRAIN
HVS
DRIVER
I
sense
Fig.3 Pin configuration DIP8.
handbook, halfpage
n.c.
V
CC
GND
n.c.
n.c.
CTRL
DEM
1
2
3
4
TEA1506AT
5
6
7
TEA1506T
MDB507
14
13
12
11
10
9
8
DRAIN
HVS
HVS
DRIVER
n.c.
I
sense
n.c.
Fig.4 Pin configuration SO14.
2003 Sep 095
Philips SemiconductorsProduct specification
GreenChipII SMPS control IC
FUNCTIONAL DESCRIPTION
The TEA1506 is the controller of a compact flyback
converter, and is situated at the primary side. An auxiliary
winding of the transformer provides demagnetization
detection and powers the IC after start-up.
The TEA1506 can operate in multi modes (see Fig.5).
handbook, halfpage
(kHz)
f
VCOfixedquasi resonant
175
25
Fig.5 Multi modes operation.
MGU508
P (W)
TEA1506P; TEA1506AP;
TEA1506T; TEA1506AT
V
handbook, halfpage
sense(max)
Fig.6 V
0.52 V
sense(max)
1 V
(typ)
1.5 V
(typ)
voltage as function of V
The moment the voltage on pin VCC drops below the
undervoltage lock-out level, the IC stops switching and
re-enters the safe restart mode.
Supply management
MGU233
V
CTRL
CTRL
.
The next converter stroke is started only after
demagnetization of the transformer current (zero current
switching), while the drain voltage has reached the lowest
voltage to prevent switching losses (green function). The
primary resonant circuit of the primary inductance and
draincapacitor ensures this quasi-resonant operation. The
design can be optimized in such a way that zero voltage
switching can be reached over almost the universal mains
range.
To prevent very high frequency operation at lower loads,
the quasi-resonant operation changes smoothly in fixed
frequency PWM control.
At very low power (standby) levels, the frequency is
controlled down, via the VCO, to a minimum frequency of
approximately 25 kHz.
Start-up and undervoltage lock-out
Initially the IC is in the save restart mode. As long as V
is below the V
level, the supply current is nearly
CC(start)
CC
zero.
TheICwillactivatethe converter as soon as the voltage on
pin VCC passes the V
CC(start)
level.
The IC supply is taken over by the auxiliary winding as
soon as the output voltage reaches its intended level.
All (internal) reference voltages are derived from a
temperature compensated, on-chip band gap circuit.
Current mode control
Current mode control is used for its good line regulation
behaviour.
The ‘on-time’ is controlled by the internally inverted control
voltage, which is compared with the primary current
information. The primary current is sensed across an
external resistor. The driver output is latched in the logic,
preventing multiple switch-on.
The internal control voltage is inversely proportional to the
external control pin voltage, with an offset of 1.5 V. This
means that a voltage range from 1 to 1.5 V on pin CTRL
will result in an internal control voltage range from
0.5 to 0 V (a high external control voltage results in a low
duty cycle).
Oscillator
The maximum fixed frequency of the oscillator is set by an
internal current source and capacitor. The maximum
frequency is reduced once the control voltage enters the
VCO control window. Then, the maximum frequency
changeslinearly with the control voltageuntil the minimum
frequency is reached (see Figs 6 and 7).
2003 Sep 096
Philips SemiconductorsProduct specification
GreenChipII SMPS control IC
handbook, halfpage
f
(kHz)
175
25
VCO
VCO
2
level
level
Fig.7 VCO frequency as function of V
handbook, full pagewidth
1
MGU509
175 kHz
V
sense(max) (V)
sense(max)
TEA1506P; TEA1506AP;
TEA1506T; TEA1506AT
Cycle skipping
At very low power levels, a cycle skipping mode will be
activated. A high control voltage will reduce the switching
frequency to a minimum of 25 kHz. If the voltage on the
control pin is raised even more, switch-on of the external
power MOSFET will be inhibited until the voltage on the
control pin has dropped to a lower value again (see Fig.8).
For system accuracy, it is not the absolute voltage on the
control pin that will trigger the cycle skipping mode, but a
signal derived from the internal VCO will be used.
Remark: If the no-load requirement of the system is such
.
that the output voltage can be regulated to its intended
level at a switching frequency of 25 kHz or above, the
cycle skipping mode will not be activated.
f
osc
1.5 V − V
CTRL
CTRL
X2
V
x
150 mV
The voltage levels dV1 and dV2 are fixed in the IC to 50 mV (typical) and 18 mV (typical) respectively.
current
comparator
V
I
DRIVER
OSCILLATOR
DRIVER
I
sense
f
max
f
min
cycle
skipping
1
0
Fig.8 The cycle skipping circuitry.
dV
2
dV
1
150
Vx (mV)
MGU510
Vx (mV)
2003 Sep 097
Philips SemiconductorsProduct specification
GreenChipII SMPS control IC
Demagnetization
The system will be in discontinuous conduction mode all
the time. The oscillator will not start a new primary stroke
until the secondary stroke has ended.
Demagnetization features a cycle-by-cycle output
short-circuit protection by immediately lowering the
frequency (longer off-time), thereby reducing the power
level.
Demagnetizationrecognition is suppressed during the first
t
time. This suppression may be necessary in
suppr
applications where the transformer has a large leakage
inductance, at low output voltages and at start-up.
If pin DEM is open-circuit or not connected, a fault
condition is assumed and the converter will stop operating
immediately. Operation will recommence as soon as the
fault condition is removed.
Minimum and maximum ‘on-time’
The minimum ‘on-time’ of the SMPS is determined by the
Leading Edge Blanking (LEB) time. The IC limits the
‘on-time’ to 50 µs. When the system desires an ‘on-time’
longer than 50 µs, a fault condition is assumed (e.g.
removed Ciin Fig.12), the IC will stop switching and enter
the safe restart mode.
TEA1506P; TEA1506AP;
TEA1506T; TEA1506AT
Regarding the TEA1506, the IC will not start switching
again. Subsequently, VCC will drop again to the UVLO
level, etc.
Operation only recommences when the VCCvoltage drops
below a level of about 4.5 V.
RegardingtheTEA1506A, when the V
switching starts again (safe restart mode) when the V
level is reached. This process is repeated as long as the
OVP condition exists.
Theoutput voltage V
atwhich the OVP function trips,
o(OVP)
can be set by the demagnetization resistor, R
V
N
----------N
=
o OVP()
s
I
(OVP)(DEM)RDEM
aux
×V
+{}
clamp(DEM)(pos)
where Nsis the number of secondary turns and N
number of auxiliary turns of the transformer.
Current I
(OVP)(DEM)
The value of R
is internally trimmed.
can be adjusted to the turns ratio of the
DEM
transformer, thus making an accurate OVP possible.
levelisreached,
start
DEM
:
aux
start
is the
OverVoltage Protection (OVP)
An OVP mode is implemented in the GreenChip series.
This works for the TEA1506 by sensing the auxiliary
voltage via the current flowing into pin DEM during the
secondary stroke. The auxiliary winding voltage is a
well-defined replica of the output voltage. Any voltage
spikes are averaged by an internal filter.
Iftheoutput voltage exceeds the OVP trip level, an internal
counter starts counting subsequent OVP events. The
counter has been added to prevent incorrect OVP
detections which might occur during ESD or lightning
events. If the output voltage exceeds the OVP trip level a
fewtimes and not again ina subsequent cycle, the internal
counter will count down with twice the speed compared
with counting-up. However, when typical 10 cycles of
subsequent OVP events are detected, the IC assumes a
true OVP and the OVP circuit switches the power
MOSFET off. Next, the controller waits until the UVLO
level is reached on pin VCC. When VCC drops to UVLO,
capacitor C
will be recharged to the V
VCC
start
level.
2003 Sep 098
Philips SemiconductorsProduct specification
GreenChipII SMPS control IC
Valley switching
A new cycle starts when the power MOSFET is switched
on (see Fig.9). After the ‘on-time’ (which is determined by
the ‘sense’ voltage and the internal control voltage), the
switchis opened and the secondary stroke starts.After the
secondary stroke, the drain voltage shows an oscillation
and Cd is the capacitance on the drain node.
As soon as the oscillator voltage is high again and the
secondary stroke has ended, the circuit waits for the
handbook, full pagewidth
TEA1506P; TEA1506AP;
TEA1506T; TEA1506AT
lowest drain voltage before starting a new primary stroke.
This method is called valley detection.
Figure 9 shows the drain voltage together with the valley
signal, the signal indicating the secondary stroke and the
oscillator signal.
In an optimum design, the reflected secondary voltage on
the primary side will force the drain voltage to zero. Thus,
zero voltage switching is very possible, preventing large
1
P
capacitive switching losses
-- -
2
and allowing high frequency operation, which results in
small and cost effective inductors.
secondary
ringing
2
CV
×f××=
drain
valley
secondary
stroke
oscillator
BA
MGU235
A: Start of new cycle at lowest drain voltage.
B: Start of new cycle in a classical PWM system at high drain voltage.
Fig.9 Signals for valley switching.
2003 Sep 099
Philips SemiconductorsProduct specification
GreenChipII SMPS control IC
MGU236
handbook, halfpage
−100 µA
(typ)
I
DEM
−24 µA
(typ)
Fig.10 OPP correction curve.
OverCurrent Protection (OCP)
The cycle-by-cycle peak drain current limit circuit uses the
externalsourceresistor to measure the current accurately.
This allows optimum size determination of the transformer
core (cost issue). The circuit is activated after the leading
edge blanking time, t
. The OCP circuit limits the ‘sense’
leb
voltage to an internal level.
V
sense(max)
0.52 V
(typ)
0.3 V
(typ)
TEA1506P; TEA1506AP;
TEA1506T; TEA1506AT
Short winding protection
After the leading edge blanking time, the short winding
protection circuit is activated. If the ‘sense’ voltage
exceeds the short winding protection voltage V
converter will stop switching. Once VCC drops below the
UVLO level, capacitor C
will be recharged and the
VCC
supply will restart again. This cycle will be repeated until
the short-circuit is removed (safe restart mode).
The short winding protection will also protect in case of a
secondary diode short-circuit.
OverTemperature Protection (OTP)
An accurate temperature protection is provided in the
circuit. When the junction temperature exceeds the
thermal shutdown temperature, the IC will enter the safe
restart mode.
When the V
level is reached, switching starts again.
start
This process is repeated as long as the OTP condition
exists.
swp
, the
OverPower Protection (OPP)
Duringthe primary stroke, the rectifiedmains input voltage
is measured by sensing the current drawn from pin DEM.
This current is dependent on the mains voltage, according
to the following formula:
N
where:
N
=
-----------N
aux
p
I
V
≈≈
-------------- -
DEM
R
DEM
aux
×
NV
mains
-------------------------R
DEM
The current information is used to adjust the peak drain
current, which is measured via pin I
. The internal
sense
compensation is such that an almost mains independent
maximum output power can be realized.
The OPP curve is given in Fig.10.
2003 Sep 0910
Philips SemiconductorsProduct specification
GreenChipII SMPS control IC
Control pin protection
If pin CTRL is open-circuit or not connected, a fault
conditionisassumed and the converter will stop switching.
Operation will recommence as soon as the fault condition
is removed.
Soft start-up
To prevent transformer rattle during hiccup, the
transformer peak current is slowly increased by the soft
start function. This can be achieved by inserting a resistor
and a capacitor between pin I
(see Fig.11). An internal current source charges the
capacitor to V = ISS× RSS, with a maximum of
approximately 0.5 V.
The start level and the time constant of the increasing
primary current level can be adjusted externally by
changing the values of RSS and CSS.
V
I
primary(max)
τR
SSCSS
ocpISSRSS
=
---------------------------------------------- -
×=
The charging current I
pin I
pin I
is below approximately 0.5 V. If the voltage on
sense
exceeds 0.5 V, the soft start current source will
sense
×()–
R
sense
will flow as long as the voltage on
SS
start limiting the current ISS. At the V
current source is completely switched off.
Since the soft start current ISSis supplied from pin DRAIN,
the RSSvalue will not affect theVCCcurrent during start-up.
and the sense resistor
sense
level, the I
CC(start)
SS
TEA1506P; TEA1506AP;
TEA1506T; TEA1506AT
handbook, halfpage
I
SS
0.5 V
Driver
The driver circuit to the gate of the power MOSFET has a
current sourcing capability of 135 mA typical anda current
sink capability of 560 mA typical. This permits fast turn-on
and turn-off of the power MOSFET for efficient operation.
A low driver source current has been chosen to limit the
∆V/∆t at switch-on. This reduces Electro Magnetic
Interference (EMI) and also limits the current spikes
across R
sense
.
start-up
R
I
sense
5
V
ocp
C
Fig.11 Soft start.
SS
SS
R
sense
MGU237
2003 Sep 0911
10、B0M List
t
MATERIAL CONCENTRATIVE BOM PRINT
MATERIAL NO.:03-DM62SAB-SC60S
MATERIAL NAME:S21M62Q/CS-SY33-LA
Parent Child Description
03-DM62SAB-SC60S T6-016W31-A009XZ
T6-016W31-A009XZ 06-016W31-A009X
ASS'Y-REMOTE CONTROL BD
OF ARTEQU
REMOTE CONTROLLER
RC1663108
ty
1PC
1PC
Uni
BOM text
03-DM62SAB-SC60S T8-21RFLN-HF4ABASS'Y - MATCH TUBE1 PC
T8-21RFLN-HF4ABT8-21RFLN-FHF4AB ASS'Y - MATCH TUBE(F.CAB)1 PC
T8-21RFLN-FHF4AB 44-21RFLN-HF4ACRT A51ERS357X4401 PC
T8-DM62SAB-CRY10-1N4148-ABXDIODE 1N4148 (SWITCHING)3 PC
T8-DM62SAB-CRY11-SA1015-YBX
TRANSISTOR ST2SA1015Y
(PNP)
1 PCQ507
D207;D501;D
502
T8-DM62SAB-CRY11-TC3207-0BXTRANSISTOR KTC32073 PC
T8-DM62SAB-CRY18-CB0101-JNX
T8-DM62SAB-CRY18-CB0182-JNX
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T8-DM62SAB-CRY18-CB0511-JNX
T8-DM62SAB-CRY18-CB0681-JNX
T8-DM62SAB-CRY18-CD0155-JNX
T8-DM62SAB-CRY18-FE0272-JNX
T8-DM62SAB-CRY18-FG0153-JHX
T8-DM62SAB-CRY25-BCB101-M1X
T8-DM62SAB-CRY25-BCB221-M1X
T8-DM62SAB-CRY25-BLB109-M1X
T8-DM62SAB-CRY26-ABC471-JZX
T8-DM62SAB-CRY26-AMM681-KRX
T8-DM62SAB-CRY26-EBP103-ZF1
T8-DM62SAB-CRY26-EBP103-ZFS
T8-DM62SAB-CRY35-139730-00XFERR. BEAD BF602 PCFOR C508
T8-DM62SAB-CRY40-0Y12DG-CRB1XG P.C.B CRT BD1 PC
T8-DM62SAB-CRY46-10967W-01XG PIN BASE *1 TJC1-1A1 PCP501
T8-DM62SAB-CRY47-CRT004-XX0G
T8-DM62SAB-CRY46-33079W-05XGPIN BASE *5 TJC3-5A1 PCP503
T8-DM62SAB-CRY46-35179W-04XGPIN BASE TJC3-4A1 PCP502
03-DM62SAB-SC60S T8-DM62SAB-BSYASS'Y - BASE1 PC
T8-DM62SAB-BSY54-420800-000RUBBER PAD3 PC
T8-DM62SAB-BSYT8-DM62SAB-BSYZASS'Y - BASE(ART)1 PC
T8-DM62SAB-BSYZ62-444330-0CL1ABASE1 PC
T8-DM62SAB-BSYZ74-045035-50HPLASTIC BAG1 PC
03-DM62SAB-SC60S T8-DM62SAB-FCNASS'Y - FRONT CABINET1 PC
T8-DM62SAB-FCN54-205140-000SPACER CRT MOUNTING T=2MM4 PC
T8-DM62SAB-FCN54-314740-0X0
T8-DM62SAB-FCN57-389890-000WIRE MOUNTS 80MMX2.2MM3 PC
T8-DM62SAB-FCN62-227680-0UA
T8-DM62SAB-FCN62-227680-1UAFBT BRACKET1 PC
T8-DM62SAB-FCN62-444320-0CLSALVER1 PC
T8-DM62SAB-FCN62-450560-0UNTRACKING_R1 PC
T8-DM62SAB-FCN62-450570-0UNTRACKING_L1 PC
T8-DM62SAB-FCN63-B30100-AB2GSCREW-ST 3MM 10MM 62 R=Y1 PC
T8-DM62SAB-FCN63-B40100-BT4GS/T SCREW B 4 X 103 PC
T8-DM62SAB-FCN63-B40150-AB4G
T8-DM62SAB-FCN63-W30100-AB4GS/T SCREW W 3 X 10 AB3 PC
T8-DM62SAB-FCN63-Z60250-AB4GS/T SCREW HA 6X254 PC
T8-DM62SAB-FCN67-M44681-0E4METAL PART1 PC
T8-DM62SAB-FCNT8-DM62SAB-FCNZ
T8-DM62SAB-FCNZ55-DM62FC-1CL1AFRONT CABINET1 PC
T8-DM62SAB-FCNZ56-DM62FB-0HA5OPUSH BUTTON1 PC
T8-DM62SAB-FCNZ56-DM62LE-0HC5ZLENS1 PC
T8-DM62SAB-FCNZ58-DM62FI-0UI1AINLAY PUSH BUTTON1 PC
T8-DM62SAB-FCNZ67-2960LG-0A09ALOGO1 PC
T8-DM62SAB-FCN41-GND021-LX0ASS'Y-GND BRAID 21“CRT1 PC
T8-DM62SAB-FCN36-DEG210-BX3DEGAUSSING COIL 2500MM1 PC
T8-DM62SAB-FCN67-X12668-0E0SPRING CRT 6MMX40MMX0.5MM1 PC
T8-DM62SAB-FCN42-41208D-XX0GSPEAKER YDP412-1A2 PCW601,W602
T8-DM62SAB-FCN46-14026H-02XG
T8-DM62SAB-FCN46-27250H-02XG
T8-DM62SAB-FCN63-Z30120-AB4GS/T SCREW 3.0 X 124 PC
03-DM62SAB-SC60S T8-DM62SAB-MANSM ASS'Y - CHASSIS BD1 PC
P602H FOR
M.BD P602
P601H FOR
M.BD P601
MTG SPK &
F.CAB
T8-DM62SAB-MANSM T8-DM62SAB-IRY
T8-DM62SAB-IRY02-IRR001-XX1
T8-DM62SAB-IRY11-SC1815-YBX
T8-DM62SAB-IRY14-LED03R-XX1LED RED Φ3MM FO2031 PCD1101
T8-DM62SAB-IRY18-CB0152-JNX
T8-DM62SAB-IRY18-CB0470-JNX
T8-DM62SAB-IRY18-CB0472-JNX
T8-DM62SAB-IRY25-HCB470-M1X
T8-DM62SAB-IRY26-EBP104-ZFS
T8-DM62SAB-IRY40-21M62S-IRB1XG P.C.B IR RECEIVE BD1 PC
T8-DM62SAB-IRY46-33079W-04XGPIN BASE *4 TJC3-4A1 PCP1101
T8-DM62SAB-MANSM T8-DM62SAB-KEYASS'Y - KEY BD1 PC
T8-DM62SAB-KEY18-CB0122-JNX
T8-DM62SAB-KEY18-CB0123-JNX
T8-DM62SAB-KEY18-CB0152-JNX
T8-DM62SAB-KEY18-CB0302-JNX
T8-DM62SAB-KEY18-CB0472-JNX
T8-DM62SAB-KEY40-21V18S-KEC1XG P.C.B KEY BD1 PC
T8-DM62SAB-KEY46-27626W-02XG
T8-DM62SAB-KEY48-TAC002-XX1TACT SWITCH TSVB-3-D7 PC
T8-DM62SAB-MANSM T8-DM62SAB-MANASS'Y - MAIN BD1 PC
T8-DM62SAB-MAN07-457FF5-NA8XGFS TUNER FSNA05T-4-E1 PCTU101
T8-DM62SAB-MAN10-0001H8-FBXDIODE 1H8 (FAST RECOVERY)1 PCD809
03-DM62SAB-SC60S T8-DM62SAB-PANASS'Y - PACKING1 PC
T8-DM62SAB-PAN75-DM62LL-CC0POLYFOAM_LL1 PC
T8-DM62SAB-PAN75-DM62LR-CC0POLYFOAM_LR1 PC
T8-DM62SAB-PAN75-DM62UL-CC0POLYFOAM_UL1 PC
T8-DM62SAB-PAN75-DM62UR-CC0POLYFOAM_UR1 PC
T8-DM62SAB-PANT8-DM62SAB-PANZASS'Y - PACKING(ART)1 PC
T8-DM62SAB-PANZ72-D62SAB-E601AOPERATION MANUAL1 PC
T8-DM62SAB-PANZ74-104097-3WDPOLYBAG (104CMX97CM)1 PC
T8-DM62SAB-PANZ76-445360-0ATCARTON BOX1 PC
DEC BAG PE
T8-DM62SAB-PANZ74-022032-6WEAD
T8-DM62SAB-PAN49-382380-BAT
03-DM62SAB-SC60S T8-DM62SAB-RCNASS'Y - REAR CABINET1 PC
T8-DM62SAB-RCN54-427740-00XFELT TAPE 294X6X0.34 PC
T8-DM62SAB-RCN63-B40150-AB4G
T8-DM62SAB-RCN63-F30100-BT3G
T8-DM62SAB-RCNT8-DM62SAB-RCNZASS'Y - REAR CABINET(ART)1 PC
T8-DM62SAB-RCNZ55-DM62RC-1CL5CREAR CABINET1 PC
T8-DM62SAB-RCNZ58-D62SMP-JKT1APLATE MODEL NO.1 PC