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TDA7296SV Datasheet(PDF) 8 Page - STMicroelectronics

Part # TDA7296SV
Description  60V - 60W DMOS AUDIO AMPLIFIER WITH MUTE/ST-BY
PDF  11 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TDA7296SV Datasheet(HTML) 8 Page - STMicroelectronics

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APPLICATION NOTE: (ref. fig. 7)
Modular Application (more Devices in Parallel)
The use of the modular application lets very high
power be delivered to very low impedance loads.
The modular application implies one device to act
as a master and the others as slaves.
The slave power stages are driven by the master
device and work in parallel all together, while the
input and the gain stages of the slave device are
disabled, the figure below shows the connections
required to configure two devices to work to-
gether.
The master chip connections are the same as
the normal single ones.
The outputs can be connected together with-
out the need of any ballast resistance.
The slave SGND pin must be tied to the nega-
tive supply.
The slave ST-BY pin must be connected to
ST-BY pin.
The bootstrap lines must be connected to-
gether and the bootstrap capacitor must be in-
creased: for N devices the boostrap capacitor
must be 22
µF times N.
The slave Mute and IN-pins must be grounded.
THE BOOTSTRAP CAPACITOR
For compatibility purpose with the previous de-
vices of the family, the boostrap capacitor can be
connected both between the bootstrap pin (6) and
the output pin (14) or between the boostrap pin
(6) and the bootstrap loader pin (12).
IN-
2
R2
680
Ω
C2
22
µF
C1 470nF
IN+
R1 22K
3
R3 22K
-
+
MUTE
STBY
4
10
9
SGND
MUTE
STBY
R4 22K
THERMAL
SHUTDOWN
S/C
PROTECTION
R5 10K
C3 10
µF
C4 10
µF
1
STBY-GND
C5
47
µF
713
14
6
15
8
-Vs
-PWVs
BOOTSTRAP
OUT
+PWVs
+Vs
C9 100nF
C8 1000
µF
-Vs
D97AU808C
+Vs
C7 100nF
C6 1000
µF
BUFFER
DRIVER
11
BOOT
LOADER
12
IN-
2
IN+
3
-
+
MUTE
STBY
4
10
9
SGND
MUTE
THERMAL
SHUTDOWN
S/C
PROTECTION
1
STBY-GND
713
14
6
15
8
-Vs
-PWVs
BOOTSTRAP
OUT
+PWVs
+Vs
C9 100nF
C8 1000
µF
-Vs
+Vs
C7 100nF
C6 1000
µF
BUFFER
DRIVER
11
BOOT
LOADER
12
5
CLIP DET
5
MASTER
SLAVE
C10
100nF
R7
2
Ω
VMUTE
VSTBY
STBY
Figure 6: Modular Application Circuit
TDA7296S
8/11



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