TDF8599 NXP Semiconductors, TDF8599 Datasheet - Page 12

• Manufacturer Part Number: TDF8599
• Description: I2C-bus controlled dual channel 43 W/2 W single channel 85 W/1 W class-D power amplifier
• Manufacturer: NXP Semiconductors

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NXP Semiconductors
TDF8599_1
Product data sheet
8.4.1 Modulation mode
In non-I
In I
and phase shift are programmed using I
Table 8.
The information on pin MOD is latched when one of the TDF8599 outputs starts switching
to avoid incorrect information on pin MOD caused by disturbances of switching amplifier
outputs.
In non-I
I
Figure
modulation.
R
0 (short to GND) Stereo mode
4.7
13
33
100
2
1. AD or BD modulation type (see
2.
3. Parallel mode operation (see
Fig 10. AD/BD modulation switching circuit
C-bus mode, the modulation mode is selected using an I
•
•
MOD
2
open)
1
C-bus mode, pin MOD can only select Parallel mode. In addition, the modulation type
AD modulation mode: the bridge halves switch in opposite phase.
BD modulation mode: the bridge halves switch in phase but the input signal for the
modulators is inverted.
2
(k )
10,
2
2
C-bus mode pin MOD is used to select:
C-bus mode, pin MOD is used to select either AD or BD modulation mode. In
phase shift when oscillator is used in Slave mode (see
Operation mode selection with the MOD pin
Figure 11
INxP
I
Parallel mode
2
C-bus mode
and
Rev. 01 — 13 November 2008
Figure 12
Section
show simplified representations of AD and BD
Section
AD
BD
+V
P
OUTP
2
Class-D power amplifier with load diagnostics
Non-I
AD modulation: no phase shift in Slave mode
BD modulation: no phase shift in Slave mode
AD modulation:
BD modulation:
AD modulation: no phase shift in Slave mode
BD modulation: no phase shift in Slave mode
C-bus commands.
8.4.3).
8.4.1).
OUTN
2
C-bus mode
+V
P
1
1
2
2
2
C-bus command.
phase shift in Slave mode
phase shift in Slave mode
Section
001aai778
TDF8599
© NXP B.V. 2008. All rights reserved.
8.4.2).
INxN
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