LCD Digital Display Buck-Boost Power Supply Module Board Constant Voltage Constant Current Crystal

$27.99
  Availability: In Stock
  Shipping: Free Airmail 
  Estimated Delivery: 
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    Handling Time

    Before we can ship your order, we prepare your products, do strict quality-control tests and carefully package the items. The time it takes to prepare your items for shipping is separate from the delivery time. It usually takes 1-3 business days to ship out .

    Shipping Methods

    You can choose the preferred shipping method on the cart page during the checkout process. We offers 3 international shipping methods:

    1. Airmail – Free untracked economy shipping via national postal services (HK Post, Singapore Post, China Post, PostNL, Swiss Post, Sweden Post, USPS, Royal Mail e.t.c.)
    2. Airmail Registered – Tracked shipping via national postal services (HK Post, Singapore Post, China Post, PostNL, Swiss Post, Sweden Post, USPS, Royal Mail e.t.c.)
    3. Expedited Shipping – Express shipping with courier delivery (DHL, UPS, FedEx, TNT)

    Delivery Time

    Airmail and Airmail Registered Area Estimated Delivery Time
    United States, Canada 7-25 business days
    Australia, New Zealand, Singapore, United Arab Emirates 10-25 business days
    United Kingdom, France, Spain, Germany, Netherlands, Japan, Belgium, Denmark, Finland, Ireland, Norway, Portugal, Sweden, Switzerland 10-25 business days
    Italy, Brazil, Russia, South Africa 10-45 business days
    Other countries 10-35 business days
    Expedited Shipping 3-10 business days to Worldwide

    Note: If you choose an expedited shipping, please remember to leave a valid contact number, this is required for expedited shipping’s courier delivery.

  •  Returns & Refund

    Last updated October 05, 2022

    Returns

    If you are not completely satisfied with your purchase for any reason, you may return it to us for a full refund within 15 days from delivery date. All returned items must be in new and unused condition, with all original tags and labels attached.

    Return Process

    To return an item, please email our customer service at sales@alexnld.com to obtain a Return Merchandise Authorization (RMA) number. After receiving a RMA number, place the item securely in its original packaging, and mail your return to the following address:

    Alex NLD
    Attn: Returns
    RMA #
    HaGiborim St 8
    Tiberias, 14388
    Israel

    Please note, you will be responsible for the return shipping charges. We strongly recommend that you use a trackable method to mail your return.

    All customers should contact us and obtain Return Merchandise Authorization (RMA) number before sending anything to us. We will not be responsible for returned item(s) without notifying us in advance.

    Refunds

    After receiving your return and inspecting the condition of your item, we will process your refund to the credit / debit card or PayPal account which was used to place the original order.

    Please allow at least seven (7) days from the receipt of your item to process your refund. Refunds may take 1-2 billing cycles to appear on your credit card statement, depending on your credit card company. We will notify you by email when your refund has been processed.

    Exceptions

    If an item is found damaged or defective on receipt, we kindly ask you to contact us within 15 days from the delivery date to arrange a refund or exchange without physical return of the item.

    Please provide us with following:

    1. Photos of the front and back sides of the packaging box;
    2. A photo, video or screenshot of the defective item or the defective part of the parcel.

    Our customer service team will communicate with you to arrange a refund or reshipment without physical return of the item.

    Warranty & Repair service

    If any of the items you have purchased from us is found defective within 1 year from receipt, you are entitled to a repair under warranty. Please kindly provide us with evidence photos or videos of the defective item. After providing such information to our Customer Service team  and the problem is acknowledged, you can send the items back to us for a repair.

    Note:  Please be aware, we do not cover the cost of the returns fees in  warranty & repair service.

    Order Cancellation

    If you want to cancel an order within 24 hours from confirmation of the payment, you will be entitled to a full refund. It is still possible to cancel an order after 24 hours, provided that it has not yet been shipped. If an order has been shipped, it’s impossible for us to cancel or modify it anymore. If you still want a refund, you required to return the item on it’s arrival.

    Questions

    If you have any questions concerning our return policy, please contact us at:

    +972 054-536-2888
    sales@alexnld.com

     


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Product Description
 
-LCD can display input and output voltage, output current output power;
-Anti-reverse protection at the input end, reverse connection will not burn;
-Can be boosted, can be stepped down, output voltage 0.5-30V arbitrary regulation, limit current 0-4A arbitrary regulation;
-Anti-backflow at the output end, no additional anti-backup diode is required to charge the battery;
-The button controls the ON/OFF status of the output, and can be set to default to ON or OFF.
-Using buck-boost chip as the main controller, external 60V 75A MOS tube as switch, dual 60V 5A SS56 Schottky rectifier, 60V voltage value, better than the market XL6009/LM2577 immature program (many devices resistance Insufficient voltage value, MOS tube and Schottky diode withstand voltage must be greater than the input plus input voltage value);
-Output ripple is small, with LC filter;
-Contain heat sink, send module support isolation column.
 
Product Parameters:
 
Input voltage: 5.5-30V (When the input voltage is 5V, buck-boost can also be achieved, but the voltage and current measurements are inaccurate; under 4.7V, undervoltage protection)
Output voltage: 0.5-30V
Output current: Can work stably in 3A for a long period of time, and can reach 4A under enhanced heat dissipation
Output power: natural heat dissipation 35W, enhanced heat dissipation 50W
Voltage display resolution: 0.05V
Current display resolution: 0.005A
Conversion efficiency: about 88%
Soft start: Yes (high power load module may fail at startup)
Reverse input protection: Yes
Anti-backflow at the output: Yes
Short circuit protection: Yes
Working frequency: 180KHZ
Size: length * width * height 66*48*21mm
Mounting hole: diameter 4mm
Weight: 46g
 
Function Description:
 
Module has IN/OUT, ON/OFF two buttons: IN/OUT button to switch the input voltage and output voltage display, long press to switch the output current output power display; ON/OFF button control output ON or OFF, long press to set The power-on default output state is ON or OFF.
CC is the current setting potentiometer, clockwise rotation, can increase the set current, when the load current reaches the set current, enter the constant current state, CC constant current indicator (red) lights up; right CV is the voltage setting potentiometer , Rotate clockwise to increase the output voltage. The ON indicator is the output status indicator. It is on when the output has a voltage, otherwise it is off.
 
Precautions:
 
The module input IN- is prohibited from being shorted with the output OUT-, otherwise the constant current function is disabled.
Please ensure that the power supply power is greater than the output load power required!
If the module wants to fully load the output, the input voltage should be more than 8V. When the input voltage is 5V, the output power is about 15W, and the voltage and current meter is invalid. The maximum current value of the module is 4A. The precondition is limited by the maximum output power. For example, if the output is 17V, the current should not exceed 2A.
The module has output short-circuit protection. After the short-circuit protection, the module automatically shuts off the output. The module can be restored after the module is powered on again. If your power supply has no output current limiting protection, it is recommended to connect the fuse at the input of the module to improve the safety factor.
The module has input undervoltage protection function, the default is about 4.7V. Below this value, the output will be automatically disconnected, and the module can be restored after the module is re-powered (note that the module port voltage, when the input current is relatively large, Do not ignore the partial pressure on the input conductor.)

Package Included:

1 x 
Buck-Boost Power Supply Module Board











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