md5vV

Multi-voltage output regulator controller

Overview

This multi-voltage output regulator supports up to 25V output, with real-time voltage display, a touch switch, and can connect to a fan. LEDs
use two XL1509-ADJ chips for step-down, supporting 0.5V to 40V input. Output is adjustable, with a 2A current rating, and outputs of 5V and 12V respectively. A 1117A step-down converter is used for
a 3.3V output. An STM32G030F6P6 ammeter and an INA219AIDR arithmetic logic unit (ALU) can test up to 26V. A PT2022S8 touch switch is used, with all interfaces exposed and functions adjusted via a toggle switch. A space is reserved for a timer module, allowing for the use of pre-built modules. Other functions include two USB female connectors supporting the touch switch and one USB female connector supporting the timer, with two sets of 2.54mm pin headers. Input current is directly output via diodes, stepped down to 12V, and protected by self-resetting and Zener diodes. This allows for multiple voltage outputs from a single power supply.

Design Files

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Update:2026-03-29 19:14:45

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