DC Power Supply Voltage Converter 8A/100W 12A Max DC 5-40V to 1.2-36V Step Down for Battery, Power Transformers

DC Power Supply Voltage Converter 8A/100W 12A Max DC 5-40V to 1.2-36V Step Down for Battery, Power Transformers,DIY Adjustable Voltage Regulator

Description

A buck converter (step-down converter) is a DC-to-DC power converter which steps down voltage (while stepping up current) from its input (supply) to its output (load). It is a class of switched-mode power supply (SMPS) typically containing at least two semiconductors (a diode and a transistor, although modern buck converters frequently replace the diode with a second transistor used for synchronous rectification) and at least one energy storage element, a capacitor, inductor, or the two in combination. To reduce voltage ripple, filters made of capacitors (sometimes in combination with inductors) are normally added to such a converter's output (load-side filter) and input (supply-side filter).

Fig. 1: Buck converter circuit diagram.

DC-to-DC converters provide much greater power efficiency than linear regulators (such as the LM7805), which are simpler circuits that lower voltages by dissipating power as heat, which does not step up output current.

Buck converters can be remarkably efficient (often higher than 90%), making them useful for tasks such as converting a computer's main (bulk) supply voltage (often 12V) down to lower voltages needed by USB, DRAM, the CPU (1.8V or less), etc.

Applications:

• DIY Adjustable Car Power Supply: Connecting input terminal to 12V power source, then the output voltage would be continuously adjustable from 14V to 35V. But please be reminded that the output voltage cannot be lower than input voltage.
• Car PC Power Supply: Connect input terminal to 12V power source, and adjust the output voltage for your notebook.
• Boost Charger. Allow you to charge the storage battery over 12V with 12V power supply, to charge 24V storage battery e.g.
• Charger for Your Electronic Device.