12V 100mA SMPS Transformerless Power Supply Circuit

This post is a research layout report for the 1.44 W non-isolated buck converter by using LinkSwitch™-TN2 LNK3204D/P/G, which can be effectively implemented as a 12V 100mA SMPS transformerless power supply circuit. It typically works at an input voltage which range from 85 VAC to 265 VAC and offers an output of 12 V at […]

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3.3V 2amp SMPS Circuit for LEDs

This specific 3.3V 2amp SMPS Circuit for LEDs was originally designed to power the digital cameras. Current usage of this camera is approximately 0.6 A and 1.3 A maximum (flash pulse). For this reason, it undoubtedly wants a traditional linear supply with eg LM317, however the efficiency could be just around 30% along with a heavy […]

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Simple 12V 500mA SMPS Circuit

I endeavored to develop a simple 12V 500mA SMPS circuit. It makes use of an built-in circuit TNY267P of a sequence of circuits TinySwitch-II: TNY263, TNY264, TNY265, TNY266, TNY267 a TNY268. This part combines together the control circuit and the switching element (MOSFET), current and thermal fuse and self-power technique. This really is the whole […]

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How to Calculate SMPS Transformer

An SMPS transformer becomes apparent at the output of all forward-mode converter. Converters applying the forward, push-pull, half-bridge and full-bridge topologies are typically forward-mode converters. Therefore, calculation of the output inductance employs the equivalent techniques for any 4 of these kinds of widely used topologies. The actual intent behind the output inductor is always to […]

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