DOWNLOAD Sharp 37GT-27H (serv.man16) Service Manual ↓ Size: 2.41 MB | Pages: 44 in PDF or view online for FREE

Model
37GT-27H (serv.man16)
Pages
44
Size
2.41 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / CTR
File
37gt-27h-sm16.pdf
Date
PREV: Sharp 37GT-27H (serv.man15) Service Manual

Sharp 37GT-27H (serv.man16) Service Manual ▷ View online

21
37GT-27H
TDA16833   (IC 701)
        
P-DIP-8-6
Off-line SMPS Controller with 
600 V Sense CoolMOS on Board
 TDA16831-4
Preliminary Data
CoolSET
        
P-DSO-14-11
Overview
Features
• PWM controller + sense CoolMOS 
attached in one compact package
• 600 V avalanche rugged CoolMOS
• Typical 
R
DSon
 = 0.5 ... 3.5 
Ω
 at 
T
j
 = 25 °C
• Only 4 active Pins
• Standard DIP-8 Package for 
Output Power 
≤
40 W
• Only few external components required
• Low start up current
• Current mode control
• Input Undervoltage Lockout
• Max. Duty Cycle limitation
• Thermal Shutdown
• Modulated Gate Drive for low EMI
Type
Ordering Code
Package
TDA 16831
Q67000-A9420
P-DIP-8-6
TDA 16832
Q67000-A9422
P-DIP-8-6
TDA 16833
Q67000-A9389
P-DIP-8-6
TDA 16834
samples
P-DIP-8-6
TDA 16831G
Q67000-A9421
P-DSO-14-11
TDA 16832G
Q67000-A9423
P-DSO-14-11
TDA 16833G
Q67000-A9419
P-DSO-14-11
22
37GT-27H
TDA16833   (IC 701)
1)
T
A
 = 70 °C
Device
Output Power Range/
Required Heatsink
1)
Output Power Range/
Required Heatsink
1)
V
in
 = 85-270 VAC
V
in
 = 190-265 VAC
TDA 16831
10 W / no heatsink
10 W / no heatsink
TDA 16832
20 W / 6 cm
2
20 W / no heatsink
TDA 16833
30 W / 3 cm
2
40 W / no heatsink
TDA 16834
40 W / 3 cm
2
40 W / no heatsink
TDA 16831G
10 W / no heatsink
10 W / no heatsink
TDA 16832G
20 W / 8 cm
2
20 W / no heatsink
TDA 16833G
20 W / no heatsink
40 W / 3 cm
2
P-DSO-14-11 for Applications with 
P
out 
≤
 20 W: TDA 16831G/2G/3G
Pin
Symbol
Function
1
GND
PWM GND and CoolMOS Source
2
FB
PWM Feedback Input
3
N.C.
Not Connected
4
N.C.
Not Connected
5, 6, 7
D
600 V Drain CoolMOS
8, 9, 10 D
600 V Drain CoolMOS
11
N.C.
Not Connected
12
N.C.
Not Connected
13
V
CC
PWM Supply Voltage
14
GND
PWM GND and Source of CoolMOS
GND
N.C.
D
D
N.C.
8
D
12
11
D
N.C.
1
2
3
4
5
N.C.
6
7
14
13
GND
FB
9
10
AEP02783
V
CC
D
D
TDA16831G/2G/3G
23
37GT-27H
  
  
  
 
pwmcomp
bandgap
kippl
J
K
kippl
tff
pwmop
v04sst
biaspwm
sst
R
S
Q
Q
logpwm
gtdrv
csshutdown
tempshutdown
5
3
osc
Rsense
biaspwm
uvlo
bias
Vcc
Drain
GND
FB
pwmpls
slogpwm
v04sst
pwmrmp
rlogpwm
alogpwm
slogpwm
RFB
Vref
pwmss
TDA16833   (IC 701)
Block Diagram
24
37GT-27H
Waveform Measurement Condition:
1. Test Equipment: DIGITAL SLPE LECROY.
2. Test Conditions: CH-12;  COLOUR BARS; 70dB FROM RF INPUT
3. TV  Condition: PICTURE AND AUDIO : SETTINGS 
à 
FACTORY PRESETS
1. The unit of resistance «ohm»is omitted (K=1000
ohms. M= Megaohm).
2. All resistors are 1/8 watt. unless otherwise noted.
3. All capacitors are 
µ
F, unless otherwise noted (P=
µµ
F).
4. The capacitor with Part No. RC-FZ9XXXBMNJ is
designed to with stand 63V.
5. The capacitor with Part No. RC-FZ4XXXBMNJ is
designed to with stand 50V.
NOTE:
SERVICE PRECAUTION:
DESCRIPTION OF SCHEMATIC DIAGRAMS
SAFETY NOTE:
1. DISCONNECT THE AC PLUG FROM THE AC
OUTLET BEFORE REPLACING PARTS.
2. SEMICONDUCTOR HEAT SINKS SHOULD BE
REGARDED AS POTENTIAL SHOCK HAZARDS
WHEN THE CHASSIS IS OPERATING.
IMPOTANT SAFETY NOTE:
PARTS MARKED WITH  «
»  (
 
                      
) ARE
IMPORTANT FOR MAINTAINING THE SAFETY
OF THE SET. BE SURE TO REPLACE THESE
PARTS WITH SPECIFIED ONES FOR
MAINTAINING THE SAFETY AND PERFORMAN-
CE OF THE SET.
CAUTION
This circuit diagram is original one,
therefore there may be slight difference
from yours.
THE AREA ENCLOSED BY THIS LINE (           )
IS DIRECTLY CONNECTED WITH AC MAINS
VOLTAGE.
WHEN SERVICING THE AREA, CONNECT AN
ISOLATING TRANSFORMER BETWEEN TV
RECEIVER AND AC LINE TO ELIMINATE
HAZARD OF ELECTRIC SHOCK.
Vp PRIMARY
Vp SECUNDARY
1
2
3
Waveform:
H-CONTROL
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