Buck-boost regulator achieves high efficiency

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https://www.electronics-lab.com/buck-boost-regulator-achieves-high-efficiency/

by Susan Nordyk @ edn.com: Using adaptive current-limit PFM (pulse frequency modulation) control, the ISL9120 switching regulator from Intersil realizes efficiencies of up to 98%, while automatically transitioning between buck and boost modes without significant output disturbance. The part accommodates a wide input voltage range of 1.8 V to 5.5 V and has an adjustable […]

Buck converter is pin-programmable

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https://www.electronics-lab.com/buck-converter-is-pin-programmable/

by Susan Nordyk @ edn.com: Housed in a tiny 3×3-mm QFN package, the MIC24046-H synchronous step-down regulator from Micrel offers efficiency of greater than 90% peak and pin-selectable output voltage, switching frequency, and current limit. A wide input voltage range of 4.5 V to 19 V makes the part useful for distributed 12-V point-of-load applications. The […]

A low-cost 0.5A 33V LED driver module with 90+% efficiency

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https://www.electronics-lab.com/a-low-cost-0-5a-33v-led-driver-module-with-90-efficiency/

by Valentin Kulikov @ edn.com This article describes simple constant current driver module with fast PWM input that can be used for driving medium and high power LEDs. The module uses an integrated constant-current output, DC-DC buck converter with output current configurable from 0.1 to 0.5A. This article outlines the schematic, design guidelines, operation, and performance […]