DocID026803 Rev 1

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AN4569

2.1-channel applications using two devices

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3.1.6

Damping network

Figure 17. Schematics for damping network section

The purpose of the damping network is to avoid the high-frequency oscillation issue on the

output circuit. After using the damping network the THD can be improved and the damping

network can also avoid the inductive copper on the PCB routing when the system is working

on high frequency with the PWM or PCM.

The C-R-C is mainly intended for high inductive loads.

The following table shows the recommended values for the components.

Table 4. 2.1 channels, two devices - damping network values

8 Ω

6 Ω

4 Ω

3 Ω

C10S, C11S, C12S,

C13S, C9M, C12M

100 nF

100 nF

220 nF

220 nF

C14S, C15S, C16S,

C17S, C10M, C11M

100 nF

100 nF

220 nF

220 nF

R4S, R5S, R6S, R7S,

R3M, R4M

6.2

4.7

3.3

2.7