TL494_15 Datasheet, PDF (13/33 Pages) Unisonic Technologies – VOLTAGE MODE PWM CONTROL CIRCUIT

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10 Application and Implementation
TL494
SLVS074G – JANUARY 1983 – REVISED JANUARY 2015
NOTE
Information in the following applications sections is not part of the TI component
specification, and TI does not warrant its accuracy or completeness. TI’s customers are
responsible for determining suitability of components for their purposes. Customers should
validate and test their design implementation to confirm system functionality.
10.1 Application Information
The following design example uses the TL494 to create a 5-V/10-A power supply. This application was taken
from application note SLVA001.
10.2 Typical Application
32-V
Input
NTE331
140 mH
V_O
Q2
R12
NTE6013
R11
30 W
100 W
R1
1 kW
5-V
REF
R2
4 kW
Q1
R10
270 W
16 15 14 13 12 11 10 9
NTE153
R8
5.1 k
R9
5.1 k
+−
V_REF
TL494
Control
+−
Osc
Load
12 3 4 5
R_F
51 kW
C_T
0.001 mF
6 78
R_T
50 kW
5-V
REF
R5
510 W
R3
5.1 kW
R4
5.1 kW
R7
9.1 kW
R6
1 kW
C2
2.5 mF
5-V
REF
Figure 9. Switching and Control Sections
R13
0.1 W
Copyright © 1983–2015, Texas Instruments Incorporated
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