Switch-Mode Power Supply Fault Diagnosis and Troubleshooting Switch-mode power supplies (SMPS) are the backbone of modern electronics—from consumer adapters to industrial motor drives. Their high efficiency and compact size come at the cost of complexity: dozens of interdependent components operating…
Adjustable Linear Power Supply Circuits: Design Guide and 8 Practical Schematics Linear power supplies remain indispensable in precision analog circuits, low-noise instrumentation, audio amplifiers, and lab bench applications—despite the efficiency advantages of switching topologies. Their hallmark traits—ultra-low output noise, zero…
SMPS EMC Design: Practical Techniques for Conducted and Radiated Emissions Switch-mode power supplies (SMPS) are indispensable in modern electronics—offering high efficiency, compact size, and wide input/output flexibility. Yet their inherent fast-switching operation (often 100 kHz–3 MHz) generates rich harmonic spectra…
Switch-Mode Power Supply Topology Selection: Forward, Push-Pull, Half-Bridge and Full-Bridge Choosing the right isolated DC–DC converter topology is a foundational decision in power supply design—impacting efficiency, size, cost, reliability, and thermal management. While flyback converters dominate low-power applications due to…
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…