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This compactly designed power supply uses STM32 microcontroller to compute the power supply output voltage and load current, and display these parameters on a RGB OLED display. The input to this power supply is a 24V DC , and the output can be varied from 0V to 24V at 0A to 3A.
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Jianan Li, a ECE and CS student at Duke University, has designed this 5V LiPo Booster based on TI’s TPS61230 IC. It is breadboard-friendly and it can be directly plugged into the power rails of breadboards of multiple sizes without blocking the vertical 5-pin strips. Jianan has posted the Eagle design files and BOM on Github.
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From Jim Williams’s application note on Switching Regulators for Poets:
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From Samuel Nork’s article “Supercap backup circuit provides reliable uninterrupted power” Temporary backup power is a common requirement for a wide range of applications whenever the main power source is suddenly unavailable. Examples include data backup applications ranging from servers to solid-state drives, power fail alarms in industrial or medical applications, and a host of other “dying gasp” functions where orderly power-down must be assured and system status communicated to a powered host. In the past, these types of high reliability systems used batteries to provide an uninterrupted power source whenever the main supply of power was inadequate or unavailable.
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This 12V DC booster circuit uses the MC34063A device which contains all the primary functions required for DC−to−DC converters. It has a built-in temperature compensated reference, comparator, controlled duty cycle oscillator with an active current limit circuit, driver and high current output switch. It operates from 3.0 to 40.0V DC and can supply output current up to 1.5A. This booster can thus power your 12V load with a 3.7V Li-Ion battery.
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