The Unseen Power: Understanding VRM
A VRM is not a single component but a circuit comprised of several key parts. The main players are the MOSFETs, chokes, and capacitors, all controlled by an integrated circuit called a PWM controller. The controller acts as the brain, constantly monitoring the CPU’s needs and instructing the MOSFETs to switch on and off thousands of times per second. This switching creates a pulsed current that is then smoothed out by the chokes and capacitors to produce a clean, steady stream of DC power. The quality and number of these phases directly impact the VRM's ability to deliver power efficiently and without fluctuation.
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