NEC DTE-29U1TH - Page 26

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Service Manual CP-785F
4-4-1 TDA8358J
An East-West output stage is provided that is able to sink
current from the diode modulator circuit.
Features :
Few external components
Highly efficient fully DC-coupled vertical output bridge circuit
Short rise and fall time of the vertical flyback switch
Guard circuit
Temperature (thermal) protection
High EMC because of common mode inputs
East-West output stage
V
i(pos)
V
i(neg)
V
p
V
oB
V
iew
GND
v
GND
EW
V
oEW
V
fb
V
oA
V
o(guard)
F/back
I
comp
1
2
3
4
5
6
7
8
9
10
11
12
13
TDA8358J
I
comp
V
0(guard)
V
p
93
M5
D3
D2
10
M2
M4
M1
5
2
+V
i(diff)
V
i(sb)
-V
i(diff)
+V
i(diff)
V
i(sb)
-V
i(diff)
I
iEW(top)
I
iEW(bot)
V
i(neg)
1
M4
input/
feedback
V
i(neg)
V
i(pos)
M3
M6
8
4
7
6
12
D1
1113
comp
guard
V
flb
V
oA
F/back
V
oB
V
oEW
GND
EW
GND
V