Sony BVW-55 Maintenance Manual page 636

IC
TL074CPW (TI)
TL074CPW-E05
OPERATIONAL AMPLIFIER
(LOW-NOISE, JFET-INPUT)
—TOP VIEW—
1 14
_ + + _
2 13
3 12
4 V V 11
EE CC
5 10
6 9
_ +
7 8
TL1451ACPW-E05 (TI)
DUAL PWM POWER CONTROLLER
—TOP VIEW—
1
CT
RT 2
+IN 1 3
4
_IN 1
5
FEED BACK 1
6
DEAD TIME CONT 1
7
OUT 1
8
GND
RT CT DT 1
2 1 6
TR I
OSC
_
3
+IN 1 +
–
4
_
_IN 1
+
5
FB 1
+
14
+IN 2 +
–
13
_
_IN 2
_
SHORT CIRCUIT
12 PROTECTOR
FB 2
11
DT 2
TL712CPS (TI)
TL712CPS-E05
HIGH SPEED COMPARATOR (TTL OUTPUT)
—TOP VIEW—
1 NC 8
V
CC
IN+ 2 7 OUT+
IN_ 3 6 OUT_
OE 4 GND 5
2-86
16
V REF
OUT
15
SCP
14
+IN 2
13
_IN 2
12
FEED BACK 2
11
DEAD TIME CONT 2
10
OUT 2
9
V
CC
2.5 V 16
V REF
REG
7
OUT 1
10
OUT 2
15
SCP
TL5001CD (TI)
TL5001CDR
SWITCHING REGULATOR CONTROLLER
—TOP VIEW—
OUT 1 GND 8
2 V 7 RT
CC
DEAD TIME
FEED BACK 3 6
CONTROLLER
S.C.P
INPUT 4 5
(Short Circuit Protection)
V
CC
2
REFERENCE
VOLTAGE
SWITCH
+
+ "ON" at
_
4
"H"
_
INPUT
S.C.P.
ERROR
COMPA-
AMP
3 RATOR
FEED
BACK
5
S.C.P.
TIMING
CAPACITOR
TLC2932IPW (TI)
TLC2932IPW-E05
C-MOS VCO AND PHASE FREQUENCY DETECTOR
—TOP VIEW—
1 V 1 V 2 14
DD DD
SELECT 2 13 R BIAS
IN
VCO 3 12 VCO CONT
OUT
FA 4 GND2 11
IN
FB 5 10 VCO INH
IN IN
PFD 6 9 PFD INH
OUT IN
7 GND1 NC 8
INPUT
FA : REFERENCE FREQUENCY
FB : INPUT FREQUENCY FROM OUTSIDE COUNTER
: PFD INHIBIT
PFD INH
SELECT : VCO OUTPUT FREQUENCY SELECT
VCO CONT : VCO CONTROL VOLTAGE
VCO INH : VCO INHIBIT
OUTPUT
PFD : PHASE FREQUENCY DETECTOR
VCO : VOLTAGE CONTROLLED OSCILLATOR
OTHER
R BIAS : BIAS RESISTOR FOR VCO OSCILLATION FREQUENCY SETTING
13
R BIAS
12 BIAS
VCO CONT
CONTROL
10
VCO INH
2
SELECT
4
FA CHARGE 6
DETECTOR
5
PUMP
FB
9
PFD INH
R T DEAD TIME
CONTROL
7 6
U.V.L.O
+
1
OSC
_
DEAD TIME
COMPARATOR
+
_
PWM
COMPARATOR
+
S.C.P.
LATCH
_
S.C.P.
8
COMPARATOR
GND
12 3
VCO CONT VCO
10
VCO INH
2
SELECT
13
R BIAS
IN 4 6
FA PFD
5
FB
9
PFD INH
VCO
OUTPUT
MULTIPLEXER
1/2
PFD
BVW-55
OUT
3
VCO