TDA7295 Datasheet, PDF (10/13 Pages) STMicroelectronics – 80V - 80W DMOS AUDIO AMPLIFIER WITH MUTE/ST-BY

TDA7295
BRIDGE APPLICATION
Another application suggestion is the BRIDGE
configuration, where two TDA7295 are used, as
shown by the schematic diagram of figure 25.
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 realisations.
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 20 and 21,
measured with loads respectively 8 Ohm and 16
Ohm.
With Rl= 8 Ohm, Vs = ±22V the maximum output
power obtainable is 100W, while with Rl=16 Ohm,
Vs = ±30V the maximum Pout is 100W.
Figure 18: Bridge Application Circuit
+Vs
0.22µF
Vi
2200µF
3
7
+
13 ₆
14
22µF
0.56µF
22K
-
1
22K
2
4
ST-BY/MUTE
680
10 _{9 15}
8
20K
22µF
1N4148
2200µF
10K
30K
0.56µF
22µF
22K
10 ^{9 15}
3
+
-
1
47
8
6
14
2
13
22µF
22K
680
22K
-Vs
0.22µF
D93AU015A
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