Looking at Pulse Width Modulation and Pulse Frequency Modulation

Published: 29 March 2024
on channel: FesZ Electronics
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#218 In this video I take a look at the key differences between the main ways of modulating the drive signal of a switched mode power supply – Pulse width and Pulse frequency modulation. Both types of modulation end up doing the same thing – regulating the output voltage of the supply, but they each have their specific advantages and drawbacks.

More on Power supplies:
PSU Static Output:    • Power supply parameters - Static Accu...  
PSU Dynamic Output:    • Power Supply parameters - Dynamic Acc...  
PSU Output Noise:    • Power Supply parameters - Output Noise  
PSU Loop response:    • Power Supply parameters - Loop Response  
CCM/DCM:    • Looking at Continuous and Discontinuo...  
PWM/PFM:    • Looking at Pulse Width Modulation and...  

Datasheet presented: https://www.analog.com/media/en/techn...

Further reading:
https://www.analog.com/en/resources/t...
https://www.analog.com/en/resources/t...
https://www.analog.com/en/resources/a...

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