PULSE-WIDTH-MODULATION CONTROL CIRCUIT
SLVS052G – APRIL 1988 – REVISED JANUARY 2007
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PARAMETER MEASUREMENT INFORMATION (continued)
V
CC
= 15 V
12
V
CC
4
Test
Inputs
12 kW
3
6
5
0.01 µF
1
2
DTC
FEEDBACK
TL594
RT
CT
C1
E1
C2
E2
8
9
11
10
150
W
2W
150
W
2W
Output 1
Output 2
IN+
IN-
16 IN+
15 IN-
Error
Amplifiers
13 OUTPUT
CTRL
50 kW
GND
7
REF
14
TEST CIRCUIT
Voltage
at C1
Voltage
at C2
V
CC
0V
V
CC
0V
Voltage
at CT
Threshold Voltage
DTC Input
0V
Threshold Voltage
Feedback
Input
0.7 V
Duty Cycle
0%
VOLTAGE WAVEFORMS
MAX
0%
Figure 2. Operational Test Circuit and Waveforms
6