DC-DC Step-up converter module based on the U3V70F9 system. Input voltage 2.9-9V, output voltage 9V, maximum current 10A. Two mounting holes. Polol 2894

 Pololu 2831

This small synchronous switching step-down (or buck) regulator takes an input voltage of up to 38 V and efficiently reduces it to 7.5 V. The board measures only 0.7″ × 0.7″, but it allows a typical continuous output current of up to 2.5 A. Typical efficiencies of 85% to 95% make this regulator well suited for powering moderate loads like sensors or small motors.

Step-Down DC-DC converter module based on the D24V150F9 chip. Input voltage 11 ... 40V, output voltage 9V (max 15A). Pololu 2884

Step-Up DC-DC converter module. It has an input voltage of 1.3 to 16 V, an output voltage of 12 V and a maximum input of up to 2 A. Pololu 4945

Step-Down converter D36V28F6 with an output voltage of 6 V, an input voltage from 6.3 to 50 V and a maximum output current of 4 A. Pololu 3783

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

This synchronous switching step-down (or buck) regulator takes an input voltage of up to 40V and efficiently reduces it to 5V with an available output current of around 15A. Typical efficiencies of 80% to 95% along with its high current capabilities make this regulator well suited for powering large loads. Pololu 2881

Shunt regulator with a constant voltage of 13.2V, bypass resistance 1.33 Ohms and a total of 12 SMT shunt resistors on both sides of the PCB with the possibility of adding an external potentiometer to adjust the preset voltage. Pololu 3770

Akyga EMC EMV EN2020-16-F is a single-phase EMI filter designed to suppress electromagnetic interference in devices powered by 120-250VAC, improving their stability. Supporting current up to 16A and frequency 50/60 Hz, it works well in power supplies, frequency converters and automation systems.

The S9V11MACMA switching step-up/step-down regulator efficiently produces a finely adjustable output between 2.5 V and 9 V whether it is higher or lower than the input voltage, which can range from 3 V to 16 V. The regulator also has a precision-adjustable low-voltage cutoff with hysteresis that can be used to prevent battery over-discharge.

The S9V11F5S6CMA switching step-up/step-down regulator efficiently produces a fixed 5 V (default) or 6 V (selectable) output whether it is higher or lower than the input voltage, which can range from 2 V to 16 V. (Note: minimum start-up voltage is 3 V, but it operates to 2 V after that.)

DC voltage converter with adjustable and stabilised output voltage from 0.5 V to 32 V. It can handle loads up to 4 A and has an output of up to 50 W. It features a colour display and a handy user interface. Fnirsi DC/DC converter 50W

Pololu 5V Step-Up Voltage Regulator U1V10F5

The Step-Up Buck Voltage Regulator module with output voltage of 3.3V and input voltage range of 1-3V and a maximum output current of 200 mA. STMicroelectronics EVAL4971

The Step-Up NCP1402 Buck Voltage Regulator module with output  voltage 3.3V, input voltage range of 0.8-3.3V and a maximum output current of 200 mA. Pololu 2114

The Step-UpU1V11F3 Buck Voltage Regulator module with output voltage 3.3V, input voltage range of 0.5-5.5V and a maximum output current of 1.2A. Pololu 2561

DC-DC Step-Down Converter ME3116AM6G with an output voltage of 5 V, input voltage from 6 to 24 V and a maximum output current of 1 A. Dedicated to the M5Stack modules. M5Stack U125