32
IC501
TL453CPWR-E20
IC503
TL5001CD
+
–
+
–
OUTPUT 2
OUTPUT 1
PWM
COMPARATOR 1
PWM
COMPARATOR
2
VREF
ERROR AMP 1
ERROR AMP 2
REFERENCE
VOLTAGE
R
U. V. L. O.
TRIANGLE
OSCILLATOR
VREF
VREF
13
14
15
16
REF OUT
UVK
NON INV
INPUT2
INV
INPUT2
12
FEED
BACK2
11
DEAD TIME
CONTROL2
10
OUT2
9
VCC
CT
RT
NON INV
INPUT1
INV
INPUT1
FEED
BACK1
DEAD TIME
CONTROL1
OUT1
GND
1
2
3
4
5
6
7
8
REFERENCE
VOLTAGE
S.C.P.
COMPARATOR 1
SWITCH
'ON'
AT
'H'
PWM
COMPARATOR
S.C.P.
COMPARATOR 2
DEAD-TIME
COMPARATOR
S.C.P.
LATCH
OSC
U.V.L.O
ERROR
AMP
–
+
–
+
+
–
+
–
–
+
5
6
7
8
1
2
3
4
OUT
VCC
FEED BACK
INPUT
SCP
DEAD-TIME
CONTROL
RT
GND
