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Filtered PWM in Analog Mode

Solution

If you are using a filtered PWM signal from a microcontroller to generate the analog voltage, an R/C filter with component values 10k ohms and at least .1uf is recommended as shown in the attached figure. Using a larger value filter capacitor such as 1uf or 10uf will result in smoother motor operation, at a cost of slower transient response. A PWM frequency higher than 1000Hz is recommended.

Attachments:
Low_Pass_Filter.PNG Low_Pass_Filter.PNG

 
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Article details
Article ID: 29
Category: Motor Drivers
Date added: 2020-09-17 21:27:58
Views: 13725
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