Inverting Op-Amps Simplified-(Part 5)

Описание: "Welcome back to Part 5 of our Buck Converter series! In this episode, we dive into the heart of feedback control: the Operational Amplifier (Op-Amp) — specifically the inverting configuration that acts as the error amplifier in your buck converter.
We cover:

Ideal op-amp characteristics (infinite gain, infinite input impedance, zero output impedance, zero offset)
What open-loop gain really means and why it's HUGE (AOL ~ 100,000–1,000,000!)
How negative feedback tames the beast for stable Vout regulation
Quick intro to Bode plots (gain & phase margins teaser — full deep dive coming next!)

This is the bridge from basic buck theory to real closed-loop design. Perfect for students, hobbyists, and engineers building efficient DC-DC converters.

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