DC-DC High-current Adjustable Step Down Power Supply Module

Module performance and features:

1. with connection terminals, no soldering iron can also be used conveniently

2. input voltage: 5 ~ ℃, max ℃, recommended for use in 20v, input inversely connect. ( the input voltage shall be higher than 1 v above the output voltage )

3.adjustable output voltage range 0v ~ 16.5 v continuously adjustable, automatically save the last set voltage.

4. peak current 3a, recommended for use in 2a. The accuracy 1 %, the minimum display 0.01, the unit is a, more than 2a heat, please think to solve the heat dissipation problem.

5.high conversion efficiency, up to 95 % ( efficiency is related to input, output voltage, current and differential pressure )

6. load adjustment rate s ( I ) ≤ 0.8 %, voltage adjustment rate s ( u ) ≤ 0.8 %

7.size 62 mm * 44 mm * 18 mm

8.weight 45 g

Product highlights

1. exquisite acrylic shell.

2. the first key to adjust the voltage, left is the voltage reduction, the right is added voltage, the single press adjustment 0.04 v voltage, the long one 1s does not adjust the voltage, can withstand 100,000 press; Compared with the same potentiometer, it is more convenient and fast.

3. display the LCD screen, the voltage current can be displayed at the same time, blue background on a blue background, the wide angle of any angle is very clear, the use of digital tube in the same products, common digital tube can be used for a period of bad paragraph, this product does not have this kind of problems.

Description of the calibration:

This module has calibration function, do not need to worry about the measurement error, the normal shipping will be calibrated before it is issued, if you find the display is not allowed or the display of numerical seizure, left and right key cannot mobilize the voltage, can be calibrated by the following methods.

Calibration method:

Power off the left button without access to power supply, the screen began to flicker, release the left button, using a multimeter to measure the output voltage, press about key to the multimeter display closest to 5 volts, such as: 4.98 to 5.02, adjustable power LCD display how much can be used to adjust the power supply, and then access to power, that is, calibration completed. Error can be calibrated within 0.04 v, if the error is greater, can try another school.