GRUNDIG Service
Chassis U2
2 - 32
Netzteil / Power Supply
VTC194-22
GND
D2602
STPS340
F2601
1
PWR
2
GND
3
GND
111
22
33
S2601
+12V3
C2601
1uF
To DC/DC Module
+5V3
3
2
1
D2601
BAV99
R2601
*
12VAC
6
7
8
9
10
5
4
3
2
1
11
12
S2602
DC_DC
C2602
1uF
GND
C2604
1uF
J2602
J2601
J2603
C2603
1uF
C2605
680uF
25V
L201 4.7uH
C205
100nF
C202
10uF
Vin
Vout
R202
10K
Vin
Vout
C203
22nF
R201
56K
R203
220K
Vin
R205
27K
Vout
Vout
Vin
C201
33pF
C204
100pF
C207
22uF
6
7
8
9
10
5
4
3
2
1
11
12
S201
DC_DC
Vac
1
3
2
Q201
2N7002T
C209
*
R207
100K
Vac
RT/CL K
1
G
N
D
2
GN
D
3
PVI N
4
PVI N
5
VI N
6
VSENSE
7
COMP
8
SS/TR
9
EN
10
PH
12
BOOT
13
PH
11
PGOOD
14
GN
D
15
IC201
TPS54521RHL
C208
*
R206
560R
C210
22nF
R204
22K
C206
22uF
L202 4.7uH
R208
4R7
SS
DS-216
DC Jack
!
T6,3A/250V
COMP /RUN
2
FB
3
PG
ND
1
SG
ND
4
ISENSE
5
VC
C
7
GATE
8
E
COMP /RUN
FB
PG
N
D
SG
N
D
ISENSE
V
C
C
GAT
IC2401
MP3900
L2401
10uH/7A
FB2401
R2422
2.2K/1%
R2414
68K
R2418
22k
R2409
220R
C2410
100n/50V
1
3
2
ZD2401
BZX84C12V
C2413
100n/50V
R2410
10R
R2415
10K/1%
4
1
3
D2402
STPS5H100
C2414
10n/50V
24V
24V
C2402
10uF/50V
C2408
10uF/50V
C2411
10uF/50V
+12V3
P1
1
P2
2
P3
3
P4
4
P5
5
P6
6
P7
7
P1
P2
P3
P4
P5
P6
P7
P8
8
P9
9
P10
10
P11
11
P12
12
P13
13
P14
14
S2401
CON14
24V
DIM
C2404
100uF
25V
R2402
0R
R2403
0R
T2402
TRN SMD
T2401
BC807-40
R2407
22K
R2408
4,7K
BL ON/OFF
D2401
ES1D
C2403 22uF 10V
FB2402
FB
C2405
100n
50V
SGND
Power Stage
Signal Stage
R2405
10K
R2406
10K
R2416
10R
1
3
2
D2404
BZX84C12V
C2409
100n/50V
C2401
100n/50V
C2407
100uF 35V
STBY
R2413
0R
3
5
12
4
R2401
?
J2414
J2401
R2420
2.2K/1%
R2419
2.2K/1%
C2412
100n/50V
D2403
UF4006
1
3
2
BZZD2402X84C12V
R2417
2.2K/1%
T2403
FDS8778
R2421
0.04R
6
7
5
FBP
1
COMP
2
FSW
3
ISET
4
EN
5
PWM
6
IFB8
7
IFB7
8
IFB6
9
IFB5
10
IFB3
12
IFB2
13
IFB1
14
GND
15
ISNS
16
GDRV
17
VI
N
18
VDD
19
OVP
20
IFB4
11
FBP
COMP
FSW
ISET
EN
PWM
IFB8
IFB7
IFB6
IFB5
IFB3
IFB2
IFB1
GND
ISNS
GDRV
V
IN
VDD
OVP
IFB4
IC2201
TPS61199
C2205
100n/50V
L2201
10uH
VLED
C2204
10uF/50V
R2208
R
C2213
CAP
R2218
2.2K
R2220
10K%1
R2219
2.2K
+12V3
C2208
220n/50V
C2210
220n/50V
C2201
C/50V
C2202
C/50V
R2201
R
R2204
R
R2202
R
C2206
100n/50V
C2211
100n/50V
C2214
220p/50V
C2212
220p/50V
R2203
R
D2203
SB560
C2203
BL ON/OFF
DIM
R2205
10R
R2207
10K/1%
R2206
10R
1
3
2
D2202
BZX84C12V
T2201
FDS8778
R2210
0.04R
R2209
100R 1%
C2215
220p/50V
R2213
12K/1%
R2215
82K/1%
IFB1
IFB2
IFB3
IFB4
IFB5
IFB6
IFB7
IFB8
R2211
R
R2212
R
R2216
R
R2217
2.2K
R2214
82K/1%
C2216
CAP
C2217
CAP
J2214
J2215
IFB2
IFB1
R2230
0R
IFB4
IFB3
R2231
0R
IFB6
IFB5
R2232
0R
IFB8
IFB7
R2233
0R
R2234
0R
R2235
0R
J2202
R2225
0R
R2226
0R
R2224
R
R2222
R
P1
1
P2
2
P3
3
P4
4
P5
5
P6
6
P6
P1
P2
P3
P4
P5
S2201
CON6
R2221
100R
C2207
47uF 100V
C2209
47uF 100V
R2223
10K/1%
P1
1
P2
2
P3
3
P4
4
P5
5
P6
6
P6
P1
P2
P3
P4
P5
S2202
CON6
J2201
2
1
3
D2201
BAT54C
L2202
J2203
SWJ
C2218
100uF
25V
100uF
25V
P1
1
P2
2
P3
3
P4
4
P5
5
P6
6
6
P1
P2
P3
P4
P5
S2203
CON6
R2227
0R
R2228
0R
P1
1
P2
2
P3
3
P4
4
P5
5
P6
6
P
P66
P1
P
P22
P
P33
P
P44
P5
S2205
CON6
P1
1
P2
2
P1
P2
S2204
LG-PANEL
ERROR
AMPLIFIER
Boot
Charge
UVLO
Current
Sense
Oscillator
with PLL
Slope
Compensation
and Clamp
Voltage
Reference
VSENSE
SS/TR
COMP RT/CLK
PH
BOOT
VIN
GND
Thermal
Shutdown
EN
Enable
Comparator
Shutdown
Logic
Shutdown
Enable
Threshold
Logic
Shutdown
PWRGD
Exposed Thermal Pad
Power Stage
& Deadtime
Control
Logic
LS MOSFET
Current Limit
OV
Minimum Clamp
Pulse Skip
Ip
Ih
UV
HS MOSFET
Current
Comparator
Current
Sense
Reg.
VIN
Boot
UVLO
PH
GND
PVIN
Overload Recovery
Hiccup
Shutdown
Hiccup
Shutdown
TPS54521
MP3900
Enable
Vref = 0.8V
FB
I
MAX
Clamp
Slope
Compensation
COMP/RUN
SGND
EA Translator
EA
Oscillator
Internal
Bias
--
+
Driver
PGND
GATE
ISENSE
Gates
Off
Turn
Off
I
TRP
--
+
S
R
Q
Q
V
CC
VIN
PWM
EA
FSW
ISET
Current
Mirror & REF
EN
Current Sinks
Current Sink
Dimming Control
IFB1
GND
Shutdown
OVP
IFBs
Selection
Ref
VDD
8
PWM
Logic
Oscillator
and
Slope
Compensation
ISNS
GDRV
160mV
OC
Protection
FBP
COMP
IFB
Protection
LDO
ISET
VDD
EN
VDD
IFB2
IFB8
OVP
Protection
TPS61199
5
6
7
