TL494 Datasheet, PDF (2/6 Pages) Motorola, Inc – SWITCHMODE PULSE WIDTH MODULATION CONTROL CIRCUIT

Pulse-Width-Modulation Control Circuits
Parameter measurement information
Vcc = 15V
TEST
INPUTS
50KΩ
Vcc
DEAD-TIME
12KΩ
0.01uF
FEEDBACK
R_T
C_T
(+)
(-)
ERROR
(+)
(-)
OUTPUT
CONTROL
GND
150 Ω
2W
150 Ω
2W
C1
OUTPUT 1
E1
OUTPUT 2
C2
E2
REF OUT
TEST CIRCUIT
TL494
VOLTAGE
Vcc
AT C1
0
VOLTAGE
Vcc
AT C2
0
VOLTAGE
AT C_T
DEAD-TIME
CONTROL
INPUT
FEEDBACK
THRESHOLD VOLTAGE
0V
THRESHOLD VOLTAGE
0.7 V
0%
DUTY
CIRCLE
0%
MAX
Figure 1. OPERATIONAL TEST CIRCUIT AND WAVEFORMS
Mar. 2006-Rev06
146
HTC