Characterization curves
STA518
The following characterizations are obtained using the stereo full bridge configuration (Figure 8) with
STA308A controller.
Figure 15. Output Power vs Supply Voltage Figure 16. THD+N vs Output Power
o(W) 90
80
70
60
50
40
30
20
Rl=8ohm
F=1KHz
Stereo Full
BTL
THD=10%
THD=1%
Single
Parallel BTL
THD(%)
10
5
2
1
0.5
0.2
0.1
0.05
Vcc=29V
Rl=8ohm
F=1KHz
Double BTL
10
0.02
0.01
0
100m 200m
500m 1
2
5
10
20
60
+10 +12 +14 +16 +18 +20 +22 +24 +26 +28 +30 +32 +34 +36
Pout(W)
Vsupply(V)
Figure 17. Power Dissipation vs Output Power
Pd (W)
12
10
8
Vcc=29V
Rl=8ohm
F=1KHz
6
4
2
0
0
10
20
30
40
50
2 X Pout (W)
The following characterizations are obtained using the single BTL configuration (Figure 9) with STA308A
controller.
Figure 18. THD+N vs Output Power
THD(%)
10
5
2
1
0.5
0.2
0.1
0.05
Vcc=34V
Rl=8ohm
F=1KHz
Single BTL
0.02
0.01
100m 200m
500m 1
2
5
Pout(W)
10 20
50 80
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