1500W PFC + Phase-Shifted Full-Bridge Power Supply: Board-Level Teardown and Analysis This article presents a comprehensive board-level teardown and technical analysis of a commercial 1500W industrial-grade AC–DC power supply featuring an active continuous-conduction-mode (CCM) boost PFC front-end followed by a…
Phase-Shifted Full-Bridge DC-DC Converter Design and Analysis The phase-shifted full-bridge (PSFB) converter stands as a cornerstone topology in medium-to-high-power isolated DC-DC applications—especially where efficiency, thermal management, and EMI performance are critical. Widely deployed in telecom rectifiers, server PSUs, EV battery…
LLC Resonant Converter Design with the L6599 Controller The LLC resonant converter has become the topology of choice for high-efficiency, high-power-density AC–DC power supplies in datacenter servers, telecom rectifiers, and USB-C PD adapters. Its ability to achieve zero-voltage switching (ZVS)…
Flyback Transformer Design: A Comprehensive Step-by-Step Guide The flyback converter remains one of the most widely adopted isolated DC–DC topologies—especially in low-to-medium power applications (5 W to 250 W)—due to its simplicity, cost-effectiveness, and inherent galvanic isolation. At its heart…
Grid-Tied PV Inverter Control Strategies: Hysteresis, Deadbeat and Repetitive PI Modern photovoltaic (PV) systems increasingly rely on grid-tied inverters to deliver clean, high-quality power with minimal harmonic distortion and fast dynamic response. The inverter’s control strategy directly governs power quality,…
Sine Wave Inverter Short-Circuit and Overcurrent Protection Design Modern pure sine wave inverters—used in solar microgrids, UPS systems, and critical backup power applications—demand robust, multi-layered protection against catastrophic failures. A single output short-circuit event can destroy IGBTs or MOSFETs in…
Inverter Transformer Design and Magnetic Core Calculation Inverter transformers serve as critical isolation and voltage transformation elements in modern power conversion systems—from solar microinverters and UPS units to EV traction inverters and industrial motor drives. Unlike line-frequency transformers operating at…
H-Bridge Gate Drive Circuit Design: NMOS, PMOS and IR2110 Bootstrap In modern power electronics—especially in motor drives, UPS systems, and solar inverters—the H-bridge is the foundational topology for bidirectional power conversion. Its ability to reverse current flow and synthesize AC…
Pure-Hardware SG3525 SPWM Driver Board: Design Without Microcontroller In modern power electronics, microcontroller-based sine-wave PWM (SPWM) generation dominates inverter and motor drive designs due to its flexibility and digital precision. Yet, there remains enduring value—and often superior reliability—in pure-analog SPWM…
PIC Microcontroller SPWM Inverter: Implementation with C Source Code Designing a pure sine wave inverter using low-cost 8-bit microcontrollers remains a practical challenge for embedded power electronics engineers—especially when balancing performance, cost, and code maintainability. This article details a robust,…