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    DC-DC Buck Converter, 48V to 12V

    5 out of 5 based on 3 reviews | Write a review
    Factory price 48 volt to 12 volt DC-DC buck converters from ATO are compact design, with 35V-60V wide input voltage range, output stable 12V DC, more than 94% power conversion efficiency, step down 48V DC input to 12V DC output.
    SKU: ATO-DCDC-4812
    30-day Returns
    Free Shipping
    Delivery date: 6-12 days

    High performance 48V to 12V mini buck converter series adopted synchronous rectification technology, the length of the line is about 15cm, easy to install. IP68 Waterproof alloy housing makes the step-down DC-DC converters ideal for use in a wide range of applications.


    • Wide input voltage range: 35V to 60V.
    • Brand-new, die-cast aluminum shell and high quality design, maximum transfer efficiency of 95%.
    • This step down module comes with waterproof lever of IP68, moisture-proof & anti-shock protection.
    • Auto-recovery when device is back to normal operating.
    • Built-in full protection against over/under voltage input, over-current, overload, overhead, over-temperature and short circuit.
    • Industry grade DC 48V to 12V buck converter, widely used in automotive, electricity, surveillance systems, railway signals, instruments, solar generate electricity, display screen of bus and taxi, car audio device, security systems, hospital equipment, telecommunications etc.

    15A DC-DC Buck Converter Specification

    Model ATOWG-48S1215
    Input Rated voltage 48V
    Voltage range 35-60V
    Efficiency 94% @ 48V input
    Positive cable (red) 16 AWG @ 16.5cm length
    Negative cable (black) 16 AWG @ 16.5cm length
    Output Voltage 12V
    Max. rated current 15A
    Max. rated power 180W
    Voltage regulation ±1%
    Load regulation 2%
    No load loss 40mA
    Ripple & noise 160~200mV
    Positive cable (yellow) 14 AWG @ 15cm length
    Negative cable (black) 14 AWG @ 15cm length
    Environment Working temperature -40 ~ +80℃
    Working humidity 10% ~ 90%RH
    Storage temperature -40 ~ +100℃
    Function Short circuit protection YES
    Over current protection YES
    Waterproof IP68
    Over temperature protection YES
    Over voltage protection YES
    Mechanical Weight 290g
    Size 74*74*32mm

    48V to 12V DC-DC Buck Converter Model Selection

    Code Model Price Input Voltage Output Voltage Output Current Output Power Efficiency Size Download
    1 ATOWG-48S1205 $82.17 48V DC 12V DC 5 Amps 60 Watts 94% 57*64*22mm PDF
    2 ATOWG-48S1210 $154.96 48V DC 12V DC 10 Amps 120 Watts 94% 74*74*32mm PDF
    3 ATOWG-48S1215 $177.42 48V DC 12V DC 15 Amps 180 Watts 95% 74*74*32mm PDF
    4 ATOWG-48S1220 $234.51 48V DC 12V DC 20 Amps 240 Watts 94% 74*74*32mm PDF
    5 ATOWG-48S1230 $277.38 48V DC 12V DC 30 Amps 360 Watts 95% 100*80*39mm PDF
    6 ATOWG-48S1250 $320.13 48V DC 12V DC 50 Amps 600 Watts 95% 150*127*63mm PDF
    7 ATOWG-48S1260 $345.36 48V DC 12V DC 60 Amps 720 Watts 95% 150*127*63mm PDF

    Note: The series of 48V to 12V DC-DC buck converter models are all here, check the parameter carefully from the table and select the right converter power supply when place the order.

    Tips: What is the overload protection mechanism of the step down converter?

    DC-DC buck converters usually employ an overload protection mechanism to prevent the output current from exceeding the rated value and damaging the equipment or the buck converter itself. The most common overload protection mechanism is current limiting, which monitors the output current and switches off or limits the converter when it exceeds a set threshold. This is usually accomplished by introducing a current-sense resistor at the converter output and connecting it to a comparator. When the output current exceeds the set value, the comparator will trigger the controller to turn off the switching tube or reduce the duty cycle, thereby limiting the output current. In addition, some buck converters may also use mechanisms such as over-temperature protection, short-circuit protection, or input over-voltage protection to enhance overload protection. The combination of these protection mechanisms ensures safe and reliable operation of the step down converter under abnormal load conditions or external disturbances.

    Existing reviews of DC-DC Buck Converter, 48V to 12V
    Which buck controller can take an input voltage of 42V?
    42V can be converted into 12V for the motor using a controller.
    I would just like to know which controller can take an input voltage of 42V.
    From: yori | Date: 21/07/2023
    Was this review helpful? Yes No (0/0)
    ATO Responded
    You can choose our power converter:, 48V input, 12/24V output, 12/24V controller.
    Because the power supply of the controller ATO-BLD750 is 18V ~ 52V DC, we recommend the 48v to 24v converter ATO-DCDC-4824.
    Changed 48V DC to exactly 12V.
    I changed all my 48V lights on a club cart to a 12V led system. They work very well. And the price was right. Highly recommended.
    From: Jaydon | Date: 27/10/2022
    Was this review helpful? Yes No (0/0)
    Converter works great
    Installed 12 volt led lights on golf cart and needed a step down transformer to go from 48 volt to 12 volt. This buck converter did the job. Easy to install and works great. Highly recommend.
    From: Gabrielle | Date: 04/11/2019
    Was this review helpful? Yes No (0/0)
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