ST TDA7296, Руководство пользователя

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TDA7296
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Figure 20. Single Signal ST-BY/MUTE Control Circuit
6 BRIDGE APPLICATION
Another application suggestion is the BRIDGE configuration, where two TDA7296 are used, as shown by
the schematic diagram.
In this application, the value of the load must not be lower than 8 Ohm for dissipation and current capability
reasons. A suitable field of application includes HI-FI/TV subwoofers realizations. The main advantages
offered by this solution are:
– High power performances with limited supply voltage level.
– Considerably high output power even with high load values (i.e. 16 Ohm).
The characteristics shown by figures 23 and 24, measured with loads respectively 8 Ohm and 16 Ohm.
With R
l
= 8 Ohm, V
s
= ±18V the maximum output power obtainable is 60W, while with R
l
=16 Ohm, V
s
=
±24V the maximum Pout is 60W.
Figure 21. Bridge Application Circuit
1N4148
10K 30K
20K
10
µ
F 10
µ
F
MUTE STBY
D93AU014
MUTE/
ST-BY
22K 0.56
µ
F
2200
µ
F 0.22
µ
F
+
-
22
µ
F
22K
680
22K
3
1
4
13 7
+Vs
Vi
8 15
2
14
6
10
9
+
-
3
0.56
µ
F 22K
1
4
2
14
6
22
µ
F
22K
680
10
9
22
µ
F
15 8
-Vs
2200
µ
F 0.22
µ
F
22
µ
F
20K
10K 30K
1N4148
ST-BY/MUTE
13 7
D93AU015A