Design guidelines for PCB schematic and layout

AN4015

16/22

Doc ID 022507 Rev 1

Dumping network

The C-R-C is a dumping network. It is mainly intended for high inductive loads and for

common-mode noise attenuation.

Figure 17.

Dumping network

PWM output frequency shifting for AM band radio sensitivity improvement

Using a logic control signal (FS) from MCU or from a DSP (3.3 V) it is possible to modify the

Figure 18.

Frequency shift

b.

For the PWM frequency calculation formula please refer to the datasheet.