TL494
Figure 10. Error–Amplifier Characteristics
Figure 11. Deadtime and Feedback Control Circuit
VCC = 15V
+
Vin
–
Feedback
Terminal
(Pin 3)
+
Vref
–
Other Error
Amplifier
50k
Error Amplifier
Under Test
Test
Inputs
VCC
Deadtime
Feedback
RT
CT
(+)
(–)
Error
(+)
(–)
Output
Control
Gnd
150
2W
C1
E1
C2
E2
150
2W
Output 1
Output 2
Ref
Out
Figure 12. Common–Emitter Configuration
Test Circuit and Waveform
15V
RL
68
C
Each
Output
Transistor
Q
E
CL
15pF
VC
Figure 13. Emitter–Follower Configuration
Test Circuit and Waveform
15V
C
Each
Output
Transistor
Q
E
RL
68
CL
15pF
VEE
90%
VCC
10%
tr
tf
90%
10%
90%
90%
VEE
10%
10%
Gnd
tr
tf
MOTOROLA ANALOG IC DEVICE DATA
7