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E-001 — Behavioural PWM controller used in simulation instead of LM5156 PSpice model decision

Created by demo · 2026-06-24

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All 8 LTspice simulation iterations (v1–v8) used a behavioural PWM controller rather than the TI LM5156 PSpice model. This was a deliberate choice for simulation transparency — the behavioural model exposes internal signals (duty cycle, current sense, SR latch) that would be obscured by a vendor model. Consequence: Closed-loop stability (Bode plot, phase margin) has not been verified. The v8 result is a topology demonstrator only, not a production-representative simulation. RT-201 tracks replacement of the behavioural block with the LM5156 PSpice model as a high-priority open item.

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