Yamaha i88x Service Manual page 26

i88X
TLC2932IPWR (XV064A00)
PLL
1
LOGIC V
DD
2
SELECT
3
VCO OUT
4
F -A
IN
5
F -B
IN
6
PFD OUT
7
LOGIC GND
TLC2933IPWR (X3320A00)
PLL
1
LOGIC V
DD
2
TEST
3
VCO OUT
4
F -A
IN
5
F -B
IN
6
PFD OUT
LOGIC GND 7
MD1421N(X3787A00)
REGULATOR(3.3V/5.0V)
S/S
1
F-B OCL- 2
OCL+
3
GND 4
R/C 5
Vcc 6
N/C 7
8
Vboot
V 9
GL
10
N/C
11
Vout
12
Vout
13
Vout
14
Vout
15
N/C
16
P.GND
NJM2368M(TE1) (X5185A00)
NJM2369M(X4922A00)
REGULATOR(VARIABLE)
DM:IC901, IC931
1
IN 8
2
7
F.B
GND 3 6
OUT 4 5
26
MLN2:IC2 LOGIC V F
DD
1
14
VCO V
DD
13
R
BIAS
12
V
COIN
11
VCO GND
10
VCO INHBIT
9
PFD INHIBIT
8
NC
7
LOGIC GND F
DM:IC702
LOGIC V
1
DD
(Digital)
TEST 2
14
VCO V
DD
13
R
BIAS
VCO OUT
3
12
V
CO IN
11
VCO GND FIN-A 4
10
VCO INHBIT
5
FIN-B
9
PFD INHIBIT
8
NC
6
PFD OUT
7
LOGIC GND
(Digital)
DM:IC930
Vref Vcc
amp-
32 28 6
31 N/C
R/C
UVLO
ampOUT
30 ON/OFF
5 Start=7.2V
Control
Stop=6.7V
N/C
28 Vref
27 3.3V/5V
Bandgap
Reference
26 GND
5.0V 5%
25
VB
24 N/C
23
VGH
22
N/C
21
VDD
20
VDD
19
VDD
18
VDD
17
N/C
27 32
3.3V/5V amp - ampOUT
REF CT
8 7
30uA
V
OSC
REF
REF
U.V.LO
CT
CS
ER.AMP
+
0.52V -
V+ PWM
+
+
+
-
1 2
IN F.B GND
-B PFD INHIBIT VCO INHBIT VCO V VCO OUT
IN DD
5 9 10 14
DETECTOR CHARGE PUMP
4 6 12 13
-A PFD OUT V R VCO GND
IN COIN BIAS
Phase
Comparator
Vbout V
B
8 25
HighSide
BOOT
Vref=Vout+5.8V
Vref=6.5V
HighSide
100 150
Driver
High/Low
TDS
MOS OFF
Error Amp
PWM Comp
Dead Time
Control
LowSide
Vref=6.5V
3V
2.45V
1V
LowSide
OSC
Driver
f=250kHz Q
R S
CLM Vth=
0.1 0.2V
30 1 2 3 4,26
S/S F/B OCL+ GND
OCL -
CS V+
6 5
+
LO
-
+
S.C.P
-
3 4
OUT
SELECT
3 2
1/2
11 8
NC
14
VCO V
DD
13
BIAS
VCO
12
VCO IN
11
VCO GND
10
VCO INHIBIT
9
PFD INHIBIT
8 NC
V V
GH DD
23 18 21
V
OUT
11 14
P.GND
16
9
V
GL