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5A Constant Current LED Driver Module & Battery Charger - Red
When you use this product£¬ the module input and output to the ground and do not co-together£¬ this will cause the board high-power current sense resistor is bypassed£¬ so that the module can not adjust the output current size£¬ then it is easy to burn power chip module. The module is easy to use£¬ powerful! ! ! A module has three major features to meet your vast majority of occasions! ! ! Module Highlights: 1. High-power£¬ high efficiency£¬ 5A£¬ low ripple; 2. 3-in-1: (1) Used as an ordinary step-down module with overcurrent protection capability; (2) As various batteries charger for solar panels£¬ wind turbines and other occasions; (3) Used as high-power LED constant current driver module. 3. With constant voltage and current modes£¬ the indicator light indicates which mode the module is currently in; 4. When using as a lithium battery charger£¬ you can set the float voltage and charge current; It is shown being charged or has been fully charged; 5. The current limiting protection£¬ short circuit will not burn the module. Module parameters Input voltage: 4~38V Output voltage: 1.25~36V continuously adjustable Output current: adjustable£¬ 5A Output power: 75W maximum Operating temperature: -40 to + 85'C Operating frequency: 180KHz Conversion efficiency: up to 96% Short circuit protection: YES (limit current 8A) Overtemperature protection: (automatically shut off the output when overtemperature) Input reverse polarity protection: No (if you need£¬ please connect large current diode to input) Installation: four 3mm screws Connection: wiring terminals or soldering terminals£¬ V-IN is the input£¬ V-OUT it the output Module size: 15mm long£¬ 51mm wide and 26mm high Weight: 18g Application 1. Used as an ordinary step-down module with overcurrent protection capability Instruction: (1) Adjust the regulation potentiometer to make the output voltage reaches the value you want (2) Use 10A current mode to measure the output short-circuit current file (directly to the two leads to the output can be)£¬ while adjusting the constant current potentiometer allows the output current reaches a predetermined overcurrent protection value. (Such as the current value displayed on the multimeter is 4A£¬ then you can use the module to a maximum current of 4A£¬ 4A current to the constant voltage constant current when the red indicator light£¬ otherwise light off) Note: When used in this state£¬ since the output of 0.05 ohm current sense resistor£¬ there will be 0 ~ 0.3V voltage drop after connected to the load£¬ this is normal! This drop is not being pulled down your load£¬ but down-sampling resistor. 2. Use as a battery charger Without constant function module can not be used to charge the battery£¬ due to the complete consumption of the electrical battery charger with big difference between charging current is too large£¬ resulting in damage to the battery£¬ so start to the battery using a constant current charging£¬ when charging to a certain extent automatically switch back to constant voltage charging. Instructions: (1) determine that you need to recharge the battery float voltage and charging current; (lithium parameters if 3.7V / 2200mAh£¬ then float voltage of 4.2V£¬ the maximum charging current 1C£¬ namely 2200mA) (2) under no-load conditions£¬ the multimeter to measure the output voltage£¬ the constant voltage potentiometer to adjust the output voltage reaches the float voltage; (if to 3.7V rechargeable lithium battery£¬ the output voltage can be adjusted to 4.2V) (3) with a multimeter 10A current range measuring output short-circuit current (directly to the two leads to the output can be)£¬ while adjusting the constant current potentiometer allows the output current reaches a predetermined charge current value; (4) Charge turn lamp current factory default is 0.1 times the charging current; (Battery during charging current is gradually reduced£¬ gradually converted to constant voltage charging by the constant current charging£¬ if the charging current setting is 1A£¬ then when the charging current is less than 0.1A when the blue lights off£¬ the green light is on£¬ then the battery is fully charged) (5) connected to the battery charge. (1£¬2£¬3£¬4 steps as: termination power input£¬ the output of load cell is not connected) 3. Use a high-power LED constant current driver module (1) determine that you need to drive the LED operating current and the maximum operating voltage; (2) no-load condition£¬ the multimeter to measure the output voltage of the constant voltage potentiometer to adjust the output voltage reaches the LED maximum working voltage; (3) 10A current with a multimeter to measure the output short-circuit current gear while adjusting the constant current potentiometer allows the output current reaches a predetermined LED operating current; (4) connected to the LED£¬ the test machine. (Steps 1 through 3 are: power supply input connected to the output load is not connected LED lights.) Note: This module is more than 3A£¬ 35W in use£¬ to enhance heat dissipation! ! !