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S$4.21
300W 20A DC-DC Buck Converter Step Down Module Constant Current LED Driver Power Step Down Voltage Module Electrolytic Capacitor
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Product description
What is synchronous rectification:
Synchronous rectification is a new technology that uses special power MOSFETs with very low on-state resistance to replace rectifier diodes to reduce rectifier losses. It can greatly improve the efficiency of DC/DC converters and there is no dead voltage caused by Schottky barrier voltage.
Product features:
*6-40V wide voltage input
* Synchronous rectification 97% high efficiency
* Constant voltage constant current output is continuously adjustable
* Two 85V 80A high current MOS tubes
* Using 23M iron silicon aluminum 3 0.8MM pure copper wire and wound.
Module parameters;
Module properties: synchronous rectifier non-isolated buck constant current constant voltage module
Input voltage: 6-40VDC
Output voltage: Continuously adjustable (1.2-35VDC) for a long time less than 32V (suitable for applications where the input voltage is higher than the output voltage cannot be boosted)
Output current: Maximum 20A within 15A for a long period of time (If the power tube temperature exceeds 65 degrees, add fan heat dissipation; if the output voltage is high, it needs to be derated)
Current limit range: 0.0.-20A (Adjustment) If the module exceeds 65 ° C, add a fan.
Minimum pressure difference: 3V
Operating frequency: 150KHZ
Conversion efficiency: Up to about 97% efficiency is related to pressure difference and use environment
Output ripple: about 50mV ripple (without noise) 20M bandwidth (for reference only) Input 24V measured
Operating temperature: -10℃ to +75℃) (Please pay attention to the temperature of the power tube in actual use, if the temperature is too high, please strengthen heat dissipation or derating use)
Potentiometer adjustment direction: clockwise (increase), counterclockwise (decrease)
Output short-circuit protection: there is (instantaneous protection) constant current (the current setting constant current value cannot be short-circuit for a long time)
Input reverse protection: None,
Output anti-reverse perfusion: None, used for load own electricity or inductive load needs additional diodes!
Connection mode: terminal
Module size: 60*53*30MM
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
Output current regulation method:
1, Adjust the CV potentiometer, according to your load requirements, set the output voltage to the voltage value you need.
2, counterclockwise set the CC potentiometer about 30 turns, (that is, set the output current to the minimum), connect the LED, adjust the CC potentiometer to the current you need. For battery charging, after the battery is discharged, then connected to the output, adjust CC to the current you need, (for charging, be sure to use the discharged battery to adjust, because the more the battery remains in power, the smaller the charging current.)
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