Design guidelines for schematic and PCB layout

AN3383

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Doc ID 018691 Rev 1

Figure 36.

Snubber filter for spike high frequency in PWM

Figure 37.

Correct common-mode and differential snubber placement

A strong spike could occur if the snubber network is far from the pins and could possibly

damage the IC. It is recommended that the distance between snubber network and the pins

be within 3 mm, which takes into consideration the diameter of the copper wire.

Place snubber circuit for spikes in

PWM as close as possible to the

IC pins and close to the minus and

plus of each channel.

AM045265v1

AM045266v1