What should I be careful of when addressing noise that occurs in switching operation under PWM control?|FAQ|ROHM Semiconductor

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What should I be careful of when addressing noise that occurs in switching operation under PWM control?
- Noise components include noise at frequencies that are multiples of the oscillation frequency, and noise that occurs at the slew rate (inclination) of on/off switching, and so noise countermeasures that correspond to these frequencies will be needed. As a measure to deal with EMI, the input capacitor should be placed as close as possible to the IC input pin.