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
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|Height (inches)||52 mm|
|thickness (mil)||20 mm|
|Weight (Oz)||30 g|
|Temperature||-40C to +85 C|
|Note||Please adjust the potentiometer for at least 10 circles if you need to adjust output voltage|
|Output Voltage||DC 1.2-36 V|
|Input Voltage||DC 5-40 V|
|Output current||12 A Max (rated 8 A, peak 12 A); 100 W (if enhance heatsink, can reach 200 W)|
|Applications||For step down voltage application like battery or power transformers, DIY adjustable voltage regulator, 24V auto laptop power supply, 12v to 3.3V or 12V to 5V or 24V to 5V or 24V to 12V, etc.|
|Conversion efficiency||up to 95%|
|Module Properties||non-isolated step-down module (BUCK)|
|Short circuit protection||Yes (limit current is 14 A)|
|Input Reverse Polarity Protection||None (Please Series diode at the input port)|
|Working frequency||300 KHz|
|Over-temperature protection||Yes (the board will automatically shut down the output if over-temperature|
|Installation||four 3 mm screws|
|Wiring||V-IN for input; V-OUT for output|
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).
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.
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