🚀Access Wholesale Pricing (No MOQ) | Cost Effective Solutions

20A 300W High Power Synchronous Rectification Power Supply Step-down Module

20A 300W High Power Synchronous Rectification Power Supply Step-down Module

Product form

1. Module properties: synchronous rectification non-isolated buck constant current constant voltage module CC CV charging module2. Scope of application: high-power... Read more

🔥 Buy 2+ units 5% Discount. Expedited Delivery Available!  Buy at Wholesale Price. Expedited Delivery Available! We consistently aim to deliver competitive prices, superior quality, and dependable insurance and return services.

£2.99

    • Guaranteed secure & safe checkout.

      shop pay
    • Why pay retails? Everyone deserves wholesale - even for 1 unit. Save like a pro
    • Wholesale pricing for everyone - no min
    • Buy at wholesale price(s) | Money saved vs marketplaces
    • Dedicated Account Manager
    • Bulk pricing - for large enquiries

    Description


    1. Module properties: synchronous rectification non-isolated buck constant current constant voltage module CC CV charging module
    2. Scope of application: high-power LED constant current drive, lithium battery charging (including ferroelectric), 4V, 6V, 12V, 14V, 24V battery charging, nickel-cadmium nickel-metal hydride battery (battery pack) charging, solar panels, wind turbines
    3. Input voltage: 6-40VDC
    4. Output voltage: continuously adjustable (1.2-35VDC) below 32V for a long time (applicable to applications where the input voltage is higher than the output voltage and cannot be boosted)
    5. Output current: maximum 20A, long-term within 15A (please add a fan to dissipate heat when the power tube temperature exceeds 65 degrees, and use a reduced rating for high voltage output)
    6. Current limiting range: 0.2-20A (adjustment) please add a fan if the module exceeds 65 degrees
    7. Low voltage difference: 3V
    8. Operating frequency: 150KHZ
    9. Conversion efficiency: about 96% high, efficiency is related to voltage difference and use environment
    10. Output ripple: ripple about 50mV (excluding noise) 20M bandwidth (for reference only) input 24V measured
    11. Working temperature: -10 to +75 degrees Celsius (please pay attention to the power tube temperature in actual use, if the temperature is too high, please increase heat dissipation or use it at a reduced rating)
    12. Potentiometer adjustment direction: clockwise (increase), counterclockwise (decrease)
    13. Output short circuit protection: yes (instantaneous protection) constant current (the current constant current value cannot be short-circuited for a long time)
    14. Input reverse connection protection: no
    15. Output anti-reverse current: no, for loads with self-power or inductive loads, an external diode is required!
    16. Wiring method: Wiring terminal
    17. Size: 60x53x30mm
    18. Weight: about 85 grams

    Output current adjustment method:
    1. Adjust the CV potentiometer to set the output voltage to the voltage value you need according to your load requirements
    2. Set the CC potentiometer counterclockwise for about 30 turns (that is, set the output current to a small value), connect the LED, and adjust the CC potentiometer to the current you need. For battery charging, discharge the battery, then connect it to the output, and adjust CC to the current you need (when used for charging, you must use a discharged battery to adjust it accurately, because the more power left in the battery, the smaller the charging current)


    Specification:
    Package Weight
    One Package Weight 0.10kgs / 0.23lb
    One Package Size 7cm * 7cm * 6cm / 2.76inch * 2.76inch * 2.36inch
    Qty per Carton 175
    Carton Weight 18.60kgs / 41.01lb
    Carton Size 51cm * 37cm * 32cm / 20.08inch * 14.57inch * 12.6inch
    Loading Container 20GP: 441 cartons * 175 pcs = 77175 pcs
    40HQ: 1025 cartons * 175 pcs = 179375 pcs

    Specifications

    • Product Assurance: Quality Standards

    Pros and cons

    • Sustainably produced
    • Ideal for everyday use

    Returns & Delivery

    When will my order be delivered?

    At Mira Sales, we provide accurate delivery estimates based on your address and the chosen carrier. To view your expected delivery date, please add the product to your cart—your exact options will appear instantly.

    How are delivery times calculated?

    We work with multiple trusted carriers. Delivery estimates are based on:

    • Your shipping address
    • Carrier availability in your region
    • The shipping service you select (standard, express, priority, etc.)

    Processing time, usually 1–2 business days

    Customs clearance for international orders (if applicable)

    Our system automatically shows you the best estimated arrival date before checkout.

    Do you offer tracking?

    Yes. Every order includes a tracking number once it is dispatched. You’ll receive it automatically via email or SMS (if provided). Tracking updates allow you to see each step of your order’s journey.

    Can I return my product?

    Yes, you can return your product. At Mira Sales, we want you to feel confident and satisfied with your purchase. If an item arrives damaged, faulty, or not as described, we will happily offer a replacement or refund. Contact our support team via support@mirasales.com

    To speed up resolutions, we kindly request that you provide photo or video evidence of the issue.

    What can I do if my item (or part of it) is damaged?

    At Mira Sales, we want every order to arrive in perfect condition. If your item—or any part of it—arrives damaged, we will resolve the issue quickly and fairly.

    Eligibility for Returns

    You may request a return if:

    • The product arrives damaged, defective, or not working
    • You receive the wrong item
    • The item is not as described on our website

    To process your return quickly, we may ask for a photo or video showing the issue.

    Do I Need to Return the Item?

    In most cases, you will not need to return the damaged item, especially when photo/video proof is sufficient.

    If a return is required, Mira Sales will provide clear instructions and, when applicable, a prepaid return label.

    We’re Here to Help

    Our goal is to resolve all damage-related issues quickly, fairly, and with minimal inconvenience to you.

    You may contact us anytime at: support@mirasales.com

    Browse related products
    Discover more → Tap a tag

    Where trust drives commerce

    We believe in honesty over marketing.
    Some items may not have customer reviews yet, but the reviews you do see are 100% authentic, verified, and managed by Judge.me, an independent review partner trusted worldwide.

    Instead of posting fake reviews, we prefer to show only what is real — even if that means some products are still waiting for their first review.

    Unbiased recommendation Powered by Judge.me reviews

    Top 10 best selling products

    You may also like these products. These products are rated as 'top 10 best of the best' by our clients

    Collections with similar products

    Recently viewed products

      Login

      Forgot your password?

      Don't have an account yet?
      Create account