TL594
PULSE-WIDTH-MODULATION CONTROL CIRCUITS
SLVS052C – APRIL 1988 – REVISED JULY 1999
PARAMETER MEASUREMENT INFORMATION
V
CC
= 15 V
150
Ω
2 W
150
Ω
2 W
12
V
CC
4
3
8
9
Output 1
C1
E1
DTC
FEEDBACK
TL594
Test
Inputs
12 kΩ
6
5
11
10
C2
E2
Output 2
RT
CT
0.01 µF
1
IN+
IN–
IN+
IN–
2
Error
Amplifiers
16
15
13
14
OUTPUT
CTRL
REF
GND
7
50 kΩ
TEST CIRCUIT
V
CC
Voltage
at C1
0 V
V
CC
Voltage
at C2
0 V
Voltage
at CT
Threshold Voltage
DTC Input
0 V
Threshold Voltage
Feedback
Input
0.7 V
0%
Duty Cycle
MAX
0%
VOLTAGE WAVEFORMS
Figure 2. Operational Test Circuit and Waveforms
9
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TI [ TEXAS INSTRUMENTS ]
