POWER BOARD
TABLE OF CONTENTS
IC Internal Block Diagram ................................................... 8-1
Circuit Diagram .................................................................... 8-2
PCB Layout .......................................................................... 8-3
Electrical Parts List .............................................................. 8-4
8-1
8-1
IC INTERNAL BLOCK DIAGRAM
SMPS CONTROLLER - KA7500C
OSCILLATOR
+
1
-
+
2
3
-
7
14
12
10
11
9
8
C1
E1
C2
E2
VCC
RT
CT
VREF
GND
13
1
6
5
4
2
16
15
BAND GAP
REFERENCE
OUTPUT CONTROL
DEAD
TIME
CONTROL
EA(+)
EA(-)
EA(+)
EA(-)
PWM
COMP
COMP INPUT
0.7MA
1.2V
D
Q
Q
CK
5V
uA
VCC
32V
5 A
5V
2.5R
1R
1mA
0.1V
+
OVER VOLTAGE S/D
+
7.5V
27V
Thermal S/D
S
R
Q
Power on reset
+
L.E.B
S
R
Q
OSC
5V
Vref
Internal
bias
Good
logic
SFET
DRAIN
GND
FB
Soft Start
9V
*
IC INTERNAL BLOCK DIAGRAM
FAIRCHILD POWER SWITCH - KA5M02659RN
Содержание FWD570
Страница 15: ...2 2 REPAIR INSTRUCTIONS 2 2 ...
Страница 16: ...2 3 2 3 REPAIR INSTRUCTIONS ...
Страница 20: ...4 1 SET BLOCK DIAGRAM 4 1 ...
Страница 21: ...4 2 SET WIRING DIAGRAM 4 2 ...
Страница 34: ...CIRCUIT DIAGRAM MAIN BOARD 7 2 7 2 1 2 3 4 5 A B C D A B C D 6 1 2 3 4 5 6 ...
Страница 36: ...CIRCUIT DIAGRAM MAIN BOARD SERVO PART 1 A B C D E A B C D E 2 3 4 5 6 7 1 2 3 4 5 6 7 7 4 7 4 ...
Страница 37: ...7 5 7 5 CIRCUIT DIAGRAM MAIN BOARD TAPE PART 1 A B C A B C 2 3 4 5 6 1 2 3 4 5 6 ...
Страница 39: ...7 7 7 7 1 2 3 4 5 1 2 3 4 5 A B C D E PCB LAYOUT MAIN BOARD TOP VIEW ...
Страница 40: ...PCB LAYOUT MAIN BOARD BOTTOM VIEW 7 8 7 8 5 4 3 2 1 5 4 3 2 1 A B C D E ...