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    15V DC 3A 100W Switching Power Supply

    5 out of 5 based on 1 reviews | Write a review
    100W switching power supply converts AC input to 15V DC at a rated current of 3A with short circuit, overload and overvoltage protections. SMPS power supply is high reliability with factory price, perfect for DC power supply for wide applications.
    SKU: ATO-SMPS-100-315
    30-day Returns
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    Delivery date: 6-12 days

    ATO switching power supply incorporates a switching regulator in order to be highly efficient in the conversion of electrical power.


    • Universal AC input / Full range AC input
    • Short circuit, overload and overvoltage protections
    • Cooling by free air convection
    • LED indicator for power on
    • 100% full load burn-in test
    • High reliability, low price and wide range of applications


    Model ATO-HF100W-DL
    DC Voltage 15V
    Rated Current 3A
    Current Range 0.5 ~ 3A
    Rated Power 100W
    Ripple & Noise (Max.)(Note 2) 120mVp-p
    Voltage Adjust Range Rated output voltage ±5%
    Voltage Tolerance (Note 3) ±1.0%
    Line Regulation ±0.5%
    Load Regulation ±0.5%
    Setup, Rise, Holdup Time 200ms, 100ms, 30ms
    Input Voltage Range 170 ~ 264VAC (210 ~ 370VDC)
    Frequency Range 47~63Hz
    Efficiency (Typ.) 85%
    AC Current (Typ.) 1.3A/115V AC 0.65A/230V AC
    Inrush Current (Typ.) Cold start: 40A/230V AC
    Leakage Current <0.7mA/230V AC
    Protection Overload 105~130% rated output power
    Protection type: Hiccup mode, recovers automatically after fault condition is removed.
    Environment Working Temperature -20 ~ +50℃
    Working Humidity 20~90% RH non-condensing
    Storage Temperature -20~+85℃
    Storage Humidity 10~95% RH non-condensing
    Temperature Coefficient ±0.03%/℃ (0~50℃)
    Vibration 10 ~ 500Hz, 2G 10min./1 cycle, period for 60min. each along X, Y, Z axes
    Safety & EMC (Note 4) Safety Standards UL1012 Approved
    Withstand Voltage I/P-O/P: 1.5KVAC
    I/P-FG: 1.5KVAC|
    O/P-FG: 0.5KVAC
    Isolation Resistance I/P-O/P, I/P-FG, O/P-FG: 100M Ohms/500VDC/25℃/70% RH
    EMC Emission Compliance to FCC Part15 Jconduction Class B
    Others MTBF ≥408.3K hrs MIN. MIL-HDBK-217F (25℃)
    Dimension 199*98*39mm (L*W*H)
    Weight 0.68kg
    Note 1. All parameters NOT specially mentioned are measured at 230V AC input, rated load and 25°C of ambient temperature.
    2. Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1uf & 47uf parallel capacitor.
    3. Tolerance includes set up tolerance, line regulation and load regulation.
    4. The switching power supply is considered a component which will be installed into final equipment. Please make sure that the final equipment still meets EMC directives.

    Installation Dimension (Unit: mm)

    Installation dimensiions of 100W switching power supply


    100W DC Switching Power Supply Details

    SMPS Power Supply Applications

    • Power Tools
      Electric Saw, Drilling Machine, Ginder, Sand Blast Machine, Puching Machine, Weeding Machine, Air Compressor, etc.
    • Offices Devices
      Computer, Printer, LCD Monitor, Scanning Machine, etc.
    • Electrics & Household Appliance
      TV, VCRS, Radio, Dust Collector, Fan Lamp or LED Strip, Sewing Machine, Microwave Oven, Fridge / Freezr, Coffemarker, etc.
    • Industrial Equipemnt
      Monitoring Equipment, Shipping, Vehicle, Metalhalide Lamp, Solar System, Wind Power Generation, etc.

    Tips: Difference between linear power supply and switching power supply

    The power regulating tube of the linear power supply always works in the amplification area, and the current flowing through it is continuous. Due to the large power loss on the adjustment tube, a larger power adjustment tube is required and a large radiator is installed. The heat generation is serious and the efficiency is very low.

    The working mode of the linear power supply makes it necessary to have a voltage device to change from high voltage to low voltage. Generally, it is a transformer, and there are others, and then output DC voltage through rectification. In this way, the volume is large, relatively bulky, low efficiency, and large heat generation; but it also has advantages: small ripple, good adjustment rate, small external interference, suitable for use with analog circuits/various amplifiers, etc.

    The power device of the switching power supply works in the switching state, and the energy is temporarily stored through the inductive coil when the voltage is adjusted, so that its loss is small, the efficiency is high, and the requirements for heat dissipation are low, but it has a high demand for transformers and energy storage inductors. There are also higher requirements, which should be made of materials with low loss and high magnetic permeability. Its transformer is a small word. The total efficiency is 80% to 98%. The efficiency of the switching power supply is high but the volume is small, but compared with the linear power supply, the voltage and current regulation rate has a certain discount.

    Existing reviews of 15V DC 3A 100W Switching Power Supply
    So cheap.
    I replaced the burned out power converter in my RV with this new witching power supply. It’s been working great for months with no issues. I’m going to buy another one for back up since we use it every day and it’s so cheap.
    From: Marco | Date: 18/04/2022
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