Power Electronics / Power Management


Step-down converters for low-power devices

27 February 2019 Power Electronics / Power Management

STMicroelectronics’ ST1PS01 step-down converters are engineered for small size, low quiescent current and high efficiency at all values of load current, to save energy and real estate in keep-alive point-of-load supplies and IoT devices such as asset trackers, wearables, smart sensors and smart meters. Leveraging synchronous rectification, efficiency is 92% at 400 mA full load and 95% when delivering just 1 mA. Power saving design features keep the quiescent current to a miserly 500 nA and include a low-power voltage reference. There is also a pulse-frequency counter for controlling converter current at light load, with two high-speed comparators to help minimise output ripple.

EBV Electrolink, +27 21 402 1940, [email protected], www.ebv.com



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