About PWM to Voltage Calculator (Formula)
A PWM (Pulse Width Modulation) to Voltage Calculator is a tool used to convert a PWM signal into a corresponding analog voltage. This conversion allows for controlling analog devices or circuits using digital PWM signals. The formula for converting PWM to voltage depends on the specific characteristics of the PWM signal and the desired voltage range. However, a general formula can be outlined as follows:
Voltage = (PWM Duty Cycle / PWM Period) * Voltage Range
Let’s break down each component:
- PWM Duty Cycle: This represents the percentage of time the PWM signal is in the “on” state or high state during one complete cycle. It is often expressed as a value between 0 and 1 or as a percentage.
- PWM Period: This refers to the duration of one complete cycle of the PWM signal. It is the sum of the “on” state and the “off” state durations.
- Voltage Range: This represents the desired voltage range or the maximum voltage value that corresponds to a fully “on” PWM signal. It depends on the specific application and the voltage level required.
By dividing the PWM duty cycle by the PWM period and then multiplying it by the voltage range, you can obtain the corresponding analog voltage value.
It is important to consider the characteristics of the PWM signal, such as its frequency, resolution, and duty cycle range, as these factors can affect the accuracy of the conversion. Additionally, different applications may require additional adjustments or filtering techniques to obtain a stable and accurate voltage output.
For precise calculations and implementation, it is recommended to consult the documentation or datasheet of the specific PWM source or integrated circuit being used, as it may provide specific formulas or considerations for converting PWM to voltage.