PWMAnteil

PWMAnteil, or PWM-Anteil, is a term used in electronics to describe the portion of a signal that is produced by pulse-width modulation (PWM). It is closely related to the duty cycle, the fraction of time a switch remains ON within one switching period. The PWM-Anteil thus represents how much of the output is generated by pulsing control rather than by a static or linear path.

In many applications, the average output voltage produced by PWM is approximately the duty cycle D multiplied by the supply voltage (subject to small losses and any filtering). A PWM-Anteil of 0 means the output is effectively off, while a PWM-Anteil of 1 means the output is continuously on. In systems that combine PWM with an analog or linear regulation path, the PWM-Anteil denotes the share of the output attributed to PWM control versus the analog part.

Measuring and control: The PWM-Anteil is controlled by setting the PWM duty cycle in the control loop. It can be measured as the duty cycle using an oscilloscope, a PWM-capable multimeter, or a digital data recorder. In practice, the PWM-Anteil determines the response and resolution of the regulation, as well as efficiency and thermal behavior.

Applications and considerations: PWMAnteil is central in DC motor drives, switching power supplies, and LED dimming, where high PWM-Anteil enables high efficiency and fine control but increases switching losses and electromagnetic interference. Designers balance PWM frequency, duty cycle range, and filtering to achieve the desired performance.