UPS 3S module (EU) backup power supply - Waveshare 25603

Step-Down converter D36V28F7 with an output voltage of 7.5 V, an input voltage from 8 to 50 V and a maximum output current of 3.7 A. Pololu 3784

This compact (0.4″ × 0.5″) switching step-down (or buck) voltage regulator takes input voltages up to 50 V and efficiently reduces them to 9 V while allowing for a maximum output current of 600 mA. It has a very low dropout, so it can be used with input voltages that are within a few hundred millivolts of its output.

The step-down converter module allows for voltage reduction from 5.3-60V to a stable 5.3V at currents up to 11A. High efficiency of up to 95% and low power losses make it ideal for applications requiring high current and stable power. The device features built-in overcurrent, thermal, and reverse connection protection, as well as a soft-start function and a Power Good indication. Pololu 5672

DC-DC Step-Up/Step-Down Converter Module. It has an input voltage of 1.4 to 16 V, an output voltage of 7.5 V and a maximum output current to 1 A. Pololu 4967

A step-down converter that reduces the input voltage from 7.5V to 60V to a stable 7.5V with up to 95% efficiency and 5A output current. It offers low standby current (<0.2mA), soft-start functionality, overcurrent, thermal, and reverse polarity protection. Compact and easy to integrate, it is ideal for microprocessor systems, IoT, and automation. Pololu 5574

The Step-Down D24V3F3 Buck Voltage Regulator module gives the output voltage of 3,3V with a wide input voltage range of 4.3-42V and a maximum output current of 300 mA. Pololu 2097

Pololu 24V Step-Up Voltage Regulator U3V50F24

The Step-Up converter module converts the voltage in the range of 3.5-30V to 4-30V with an efficiency of over 90% and a maximum power of 80W. Its compact dimensions (3.8 x 5.2 x 2cm) and wide operating temperature range (-40 - 85°C) make it ideal for many applications.

The Step-Down D24V6F3 Buck Voltage Regulator module gives the output voltage of 3.3V with a wide input voltage range of 4.8-42V and a maximum output current of 600 mA. Pololu 2106

The compact (0.4″ × 0.5″) D24V5F12 synchronous buck voltage regulator takes an input voltage of up to 36 V and efficiently reduces it to 12 V while allowing for a maximum output current of 500 mA.

The Step-Down D24V3AHV Buck Voltage Regulator module with adjustable output voltage in the range of 4-25V with a wide input voltage range of 4.5-42V and a maximum output current of 300 mA. Pololu 2102

This synchronous switching step-down (or buck) regulator takes an input voltage of up to 40 V and efficiently reduces it to 6 V with an available output current of around 15 A. Pololu 2882

A compact voltage converter module that reduces input voltage from 9.4 to 65 V to a stable 9 V at up to 700 mA. It features high efficiency, low quiescent current (<0.2 mA), and short-circuit and thermal protection, ensuring safe and efficient operation. Its small size and ease of integration make it ideal for mobile devices, battery-powered designs, and systems requiring stable power. Pololu 5436

Power switch that enables efficient power management of devices in the Qwiic ecosystem, allowing selective shutdown of devices and energy saving. The module offers I2C bus isolation, additional GPIO pins and works with SparkFun Qwiic Mux, making it easy to control multiple devices in your projects. SparkFun PRT-26784

Step-Down converter module with an input voltage of up to 5.5 V, an output voltage of 3.3 V and an output current of 1.2 A (2 A instantaneous current). Adafruit 4711

Step-Up/Step-Down converter module based on the S13V30F5 system, input voltage from 2.8 to 22 V, output voltage 5 V. Current efficiency of the converter 4 A. Pololu 4082