variable voltage output using pwm

[vijay b@dboy]

i want to generate variable voltage output according to pwm's dutycycle.so which ic or circuit is preferable??please suggest as soon as possible.

 

[davoud]

To convert a PWM output to an analog voltage use a low-pass filter.
According to your PWM frequency For example 9.76Khz you can have an R = 4.7K and C = 1.0uF. This gives a bandwidth of 30Hz.
https://www.ontrak.net/pwm.htm

 

[Genovator]

What is your output range????
Refer to this...
https://www.edn.com/design/analog/4363990/Control-an-LM317T-with-a-PWM-signal
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**broken link removed**

NCP1203 is a pwm generator. It can be used for a controlled power output....

 

[keith1200rs]

A resistor and capacitor. See here https://www.edaboard.com/threads/263216/#post1128647

Keith

 

[alexan_e]

Here is a nice article
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There is also a link to a related microchip paper in the comments of that page
http://ww1.microchip.com/downloads/en/AppNotes/00538c.pdf