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Browse selection guides, application notes and practical power supply articles. This layout follows the previous WordPress blog structure while preparing space for the larger article library.
When engineers compare switching power supplies, the first screen is usually simple: input range, output voltage, output current, package size, and price. Those numbers are necessary, but they do not tell you how the power supply will behave inside a real machine.
Read More When engineers compare switching power supplies, the first screen is usually simple: input range, output voltage, output current, package size, and price. Those numbers are necessary, but they do not tell you how the power supply will behave inside a real machine.
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Unstable SMPS output can come from feedback sampling, loop compensation, output capacitor behavior, VCC supply, power-stage margin, PCB parasitics, light-load burst mode, or snubber resonance. This guide gives a practical order for finding the cause.
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A practical guide to non-magnetic causes of SMPS output noise, including MLCC vibration, PCB resonance, poor contacts, loop instability, rectifier ringing, safety capacitors, and load interaction.
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Common-mode noise is one of the reasons a switching power supply can look clean on the schematic and still fail EMC testing. This guide explains where common-mode current is generated, how it couples through parasitic paths, and which EMC fixes usually work.
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Hard switching is simple and low cost, but MOSFET voltage and current overlap during transitions, creating loss that rises with frequency and bus voltage. Soft switching uses resonance to reduce voltage or current before the switching event, helping high-efficiency supplies reach higher power density with lower thermal stress.
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Choosing a switching power supply looks simple on paper. Match the output voltage, check the rated current, confirm the wattage, and the job should be done. In real projects, that is where many selection problems begin.
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