Mitsubishi Electric LC62 CHASSIS XL6500LU, Руководство по обслуживанию

Страница: 99 / 135

- B5 -
DIGITAL2 PCB-MAIN
IC705 NC7SZ08P5X(PBF) IC720 ISL83220ECVZ-T
IC726 NC7SB357P6X(PBF)
IC740 MP593DN-LF-Z
IC727 NC7SZ57P6X(PBF) IC735 PQM335M2SPQ
IC752 PQM255M2SPQ
Function Table
H : HIGH Logic Level
L : LOW Logic Level
Inputs Output
A B Y
L
L L
L
H L
H H
H
L
L
H
2
3
5
4
A
B
GND
VCC
Y
5
VCC
TOUT
TIN
T
0.µF
+0.µF
+
0.µF
3
2
4
3
7
V+
V–
C+
C–
C2+
C2–
+
0.µF
5
6
ROUT
RIN
R
8
9
5k
C
C2
+ C3
C4
EN
GND
+3.3V
+
0.F
4
TTL/CMOS
LOGIC LEVELS
RS-232
LEVELS
SHDN
6
VCC
Function Table
H
L
Input (S)
B0 Connected to A
B Connected to A
H: HIGH Logic Level
L:LOW Logic Level
Function
S
Vcc
A
B
GND
B0
6
2 5
3 4
Function Table
H : HIGH Logic Level
L : LOW Logic Level
Inputs Output
S I X=(I0)•(S)+(I)•(S)
L
L H
L
H L
X
X
L
I0
H
L
X
H H X X
2
0
5
3
6
4
I
GND
I2
S
VCC
Z
CONTROL
Vo
Nr
GND
Vin
Vc
4 5
3
2
+
40/385KHz
Oscillator
Slope
Compensation
.8V
Current
Comparator
8
Internal
Regulators
2
µA
2.285/2.495V
0.7V
7
Shutdown
Comparator
Lockout
Comparator
3
4
M2
M
6
.22V
5
Error Amplifier
gm= 800µA/Volt
IN
SS
EN
COMP FB
GND
SW
BS
0.7V
Frequency
Foldback
Comparator
5V
CLK
S
R
Q
Q
Current
Sense
Amplifier
00K