An isolated DC-DC converter can be built from a transformer, a controller, and a handful of discrete parts—or bought as a module that packages all of it into one component. For gate-drive supplies, industrial control boards, and sensor power, the module is often the engineering-correct choice: it moves the isolation design, the magnetics, and the … Read more
QFN and DFN are the leadless workhorses of modern power and signal electronics: small, low-inductance, and thermally capable when the PCB cooperates. They look similar, share the same no-lead philosophy, and are frequently confused. The differences—four-sided versus two-sided terminations, the pad structure, and the thermal story—decide which one fits a design. This article compares QFN … Read more
In a converter switching at 500 kHz or 1 MHz, the gate driver is not a peripheral—it is the timing engine. Every nanosecond of propagation delay, every ampere of peak current, and every picofarad of input capacitance shows up in the dead time, the losses, and the EMI spectrum. This article explains what “high speed” … Read more
Ask most designers what protects a solar module and they will say bypass diodes—correctly, but incompletely. A complete PV system protects against three distinct threats: hot spots under shade (bypass diodes), reverse current into a weaker source (blocking diodes), and polarity mistakes or wiring faults (polarity protection and fusing). This article maps the protection layer … Read more
The 650 V IGBT lives where the 1200 V part does not go: compact, high-frequency, cost-driven stages in home appliances, induction cookers, and small industrial equipment. It competes against 600 V MOSFETs on conduction loss at high current and against nothing else on cost. This article explains where the 650 V IGBT earns its place, … Read more
At junction temperatures above 150 °C, the question changes from “can the device survive this temperature?” to “how long do the materials around the die survive it?” Silicon carbide raises the die’s intrinsic temperature capability, but the package, the solder, the thermal interface, and the board still age by the same physics. This article gives … Read more
The jump from 1200 V to 1700 V changes more than the voltage rating on the datasheet. A 1700 V device exists because the system around it operates at 1500 V DC—utility-scale solar arrays, battery storage, and some rail traction—where the margin arithmetic leaves little room for error. This article explains where the 1700 V … Read more
Silicon carbide built its reputation at 1200 V, where silicon has no clean answer. The 650 V class is different: super junction MOSFETs and fast IGBTs already work there, and the economics are tighter. Yet 650 V SiC MOSFETs are now a serious option in PFC stages, server supplies, telecom rectifiers, and chargers—not because silicon … Read more
The TO-252, also called DPAK, is the workhorse surface-mount power package: small enough for high-volume assembly, rugged enough for automotive and industrial boards, and thermally capable when the PCB is designed properly. Its performance, however, is decided more by the copper around it than by the package itself. This article explains how a TO-252 MOSFET’s … Read more
Every MOSFET datasheet leads with RDS(on), and it is tempting to sort a supplier table by that number and take the smallest value. But on-resistance is bought with silicon area, and silicon area is bought with gate charge, switching loss, and cost. This article explains the economics behind low RDS(on), works through the conduction-versus-switching crossover, … Read more