TL494
Figure 21. Pulse Width Modulated Step–Down Converter
1.0mH @ 2A
+Vin = 10V to 40V
Tip 32A
+VO = 5.0 V
IO = 1.0 A
47
150
47k
0.1
C2
Comp
–
50
50V
+
+
3
2
1
14
MR850
5.1k
500
10V
+
5.1k
5.1k
1.0M
12
VCC
8
C1
11
TL494
Vref
CT
5
– 15
16
+
RT
6
D.T. O.C. Gnd E1
4
13
7
9
E2
10
+
150
50
10V
0.001
47k
0.1
Test
Line Regulation
Load Regulation
Output Ripple
Short Circuit Current
Efficiency
Conditions
Vin = 8.0 V to 40 V
Vin = 12.6 V, IO = 0.2 mA to 200 mA
Vin = 12.6 V, IO = 200 mA
Vin = 12.6 V, RL = 0.1
Ω
Vin = 12.6 V, IO = 200 mA
Results
3.0 mV
5.0 mV
40 mV pp
0.01%
0.02%
P.A.R.D.
250 mA
72%
10
MOTOROLA ANALOG IC DEVICE DATA