A recent Design Idea, “Three discretes suffice to interface PWM to switching regulators,” demonstrated one way to use PWM to control the output of a typical switching voltage regulator. There were ...

PWM to Voltage Converter Module! As usual, the module came without any supporting documents. I visited the seller’s page to get relevant information, from which I’ve seen: The module can convert PWM ...

In practice, the actual output voltage is slightly lower. U1's PWM output is not referenced to a true ground. Instead, it sits on a voltage produced by the output transistor's R DS ON value times ...

Using a Current Mode PWM Controller in Voltage Mode Jan. 1, 2004 Over the years, power supply designers have been persuaded that current mode is superior to its voltage-mode counterpart.

But generating a smooth voltage in this way takes just a few more parts. [Scott Daniels] spent some time discussing the process of smoothing a PWM output by using a low pass filter .

What makes this so difficult is the voltage offset created by current in the microcontroller bond wire, amongst other things. Update – see ‘filtering’ below. Anyway, I finally got around to trying it, ...