Adjustable Step-down Power Supply Buck Voltage Converter Regulator Module Large Current 5A,Constant Current and Voltage

Type:Modem Cable
Origin:Mainland China
Certification:NONE

This module is an adBasic properties
Module nature: non isolated step-down module
Rectification mode: asynchronous rectification
Input voltage: 5v-32v
Output voltage: 0.8v-30v
Output current: adjustable 5A
Conversion efficiency: 95% ()
Switching frequency: 300kHz
Output ripple: 50mV (large) 20m bandwidth
Load adjustment rate; ±0.5%
Voltage regulation rate; ±2.5%
Operating temperature: - 40 to + 85
Size: 51 * 26.3 * 14 (L * w * h) (mm)
Product features:
the module uses imported high-quality chips with high efficiency (95%), small calorific value and large 5A current. At the same time, it controls the output current with the original Ti operational amplifier to make the overall output very stable.
this module uses the original Sanyo filter capacitor with low ESR, which can reduce the ripple voltage to 50mV!
this module uses machine patch and reflow welding. At the same time, each module goes through two hours of aging test before shipment to ensure high reliability.justable step-down module. The output voltage can be changed by adjusting the blue adjustable resistance on the module. The input-output voltage difference is 1V, and 0.8V voltage can be output when it is small.
The in - (input negative), in + (input positive), out - (output negative) and out + (output positive) marked on the module must be connected correctly, otherwise the module may be damaged.
Battery charging method:
1. Determine the floating charge voltage and charging current of the battery you need to charge, and the input voltage of the module;
2. Adjust the constant voltage potentiometer to adjust the output voltage to about 5V.
3. Measure the output short-circuit current with the current gear 10a of the multimeter, and adjust the constant current potentiometer to make the output current reach the predetermined charging current value;
4. The charging rotating lamp current is 0.1 times the charging current (constant current value) by default.
5. Adjust the constant voltage potentiometer to make the output voltage reach the floating charge voltage;
6. Connect the battery and test charge.
(steps 1, 2, 3, 4 and 5 are that the module input is connected to the power supply and the output is unloaded without battery.)
Application method of LED constant current drive:
1. Determine the working current and voltage you need to drive the LED;
2. Adjust the constant voltage potentiometer to adjust the output voltage to about 5V.
3. Measure the output short-circuit current with the current gear 10a of the multimeter, and adjust the constant current potentiometer to make the output current reach the predetermined led working current;
4. Adjust the constant voltage potentiometer to make the output voltage reach the LED working voltage;
5. Connect the LED and test the machine.
(steps 1, 2, 3 and 4 are that the module input is connected to the power supply, and the output is not connected to the LED light without load.)