DFRobot
DC-DC Step Down Buck Converter (15~24V to 12V/12A)
· MPN: DFR1208
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##Introduction This DC-DC step-down converter module is designed to efficiently reduce a high input voltage (15-24V) to a stable 12V output, supporting up to...
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##Introduction This DC-DC step-down converter module is designed to efficiently reduce a high input voltage (15-24V) to a stable 12V output, supporting up to 12A of current. The module offers high conversion efficiency (over 95%), with minimal ripple noise (under 50mV), making it suitable for power-sensitive applications. It also includes built-in protection features such as over-temperature protection (up to 125°C) and short circuit protection, ensuring the safe operation of both the module and connected devices. High Conversion EfficiencyAchieves greater than 95% efficiency with 24V input and 1-12A load, minimizing energy loss and ensuring reliable power conversion for demanding applications.Over-Temperature and Short Circuit ProtectionFeatures over-temperature protection up to 125°C and output short circuit protection, safeguarding the module and connected devices from damage.Thermal Management for High-Current LoadsA built-in thermal pad allows for enhanced heat dissipation when soldered to a larger copper area, providing improved performance under heavy load conditions. The module features three control pins:Figure: Pin and Dimension Diagram of DC-DC step-down converter moduleEN: Floating (open) to enable the output, connected to ground to disable the output. It can be controlled by a microcontroller's IO pin with a 1K resistor in series.AGND: When control is needed from a microcontroller, connect a single ground point to this pad.PGOOD: Outputs a high level (5V) when the output voltage is normal. Outputs a low level (0V) when there is an abnormal output voltage or a short circuit. Conversion Efficiency Figure: Conversion efficiency (Input 24V, output 12V, with a load ranging from 1 to 12A) ##Applications Robotics, for driving motors and servosHigh-power LED lighting systemsDronesAutomotive electronics ##Specification Input Voltage: DC 15~24VOutput Voltage: DC 12V ±1%Max Output Current: 12AOutput Ripple Noise: ＜50mV (1~12A load)Conversion Efficiency: ＞95% (input 24V, load 1-12A)Static Current (EN floating): ＜3mAStatic Current (EN grounded): ＜3µAOperating Temperature: -25℃ ~ +70℃Output Short Circuit Protection: YesOver-Temperature Protection: 125°CDimensions: 30 x 26 x 8mm ##ShippingList DC-DC Buck Converter (15~24V to 12V/12A) × 1
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Plain-language definitions for the technical terms used above.
- Buck converter
- A power circuit that reduces a higher DC voltage to a lower DC voltage. It is useful when your supply voltage is too high for a module or microcontroller and you want less heat and better efficiency than a simple linear regulator.
- DC
- DC means direct current, where electricity flows in one constant direction, as supplied by batteries, USB ports and many plug-pack power supplies. When a product specifies DC, it runs from a DC supply rather than mains AC, so you need to provide the correct voltage and polarity.
- LED
- A light-emitting diode (LED) is a small electronic component that emits light when current flows through it in the correct direction. Because it only conducts one way, its polarity matters, and a through-hole LED must be soldered the correct way around to light up.
- microcontroller
- A microcontroller is a small computer on a single chip that runs a stored program and controls connected inputs and outputs such as buttons, sensors, displays and communication interfaces. In a device built around one, it is the part that executes the code and coordinates the device's behaviour.
- Short circuit protection
- A safety feature that helps protect the device if its output or wiring is accidentally connected in a way that causes excessive current flow. This matters in automation wiring because mistakes or damaged cables can otherwise destroy the sensor or power supply.
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