Description

Product Description
Specification:
Origin: Mainland China
Certification: NONE
Model Number: Buck Module
Output Current: 20A
is_customized: no
Module Nature: Synchronous Rectification Non-Isolated Buck Constant Current Constant Voltage Module Cc Cv Charging Module
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 Batteries (Battery Packs) Charging, Solar Panels, Wind Generators
Input Voltage: Dc6-40v
Output Voltage: Continuously Adjustable (1.2-35vdc) For A Long Time Below 32v (For Applications Where The Input Voltage Is Higher Than The Output Voltage Cannot Be Boosted)
Output Current: Maximum 20a Long Time Within 15a (Power Tube Temperature Exceeds 65 Degrees, Please Add A Fan Cooling, High Voltage Output, Please Reduce The Amount Of Use)
Current Limiting Range: 0.2-20a (Adjustable) Module More Than 65 Degrees Please Add A Fan.
Minimum Voltage Difference: 3v
Operating Frequency: 150khz
Conversion Efficiency: Up To About 96% Efficiency And Differential Pressure And Use Of The Environment Related To
Output Ripple: Ripple 50mv Or So (Excluding Noise) 20m Bandwidth (For Reference Only) Input 24v Measurement
Operating Temperature: -10 ℃ To +75 ℃) (The Actual Use Of Please Pay Attention To The Temperature Of The Power Tube, The Temperature Is Too High, Please Strengthen The Heat Dissipation Or Derating Use)
Potentiometer Adjustment Direction: Clockwise (Increase), Counterclockwise (Decrease)
Output Short-Circuit Protection: Yes (Instantaneous Protection) Constant Current (The Current Set Constant Current Value Can Not Be A Long Time Short-Circuit)
Input Reverse Connection Protection: No
Output Anti-Reverse Irrigation: No, For Load Self-Powered Or Inductive Loads Need To Add 2 Poles!
Wiring Method: Terminal
Synchronous rectification technology introduction:
1. Synchronous rectification is a new technology that uses special power MOSFETs with very low on-state resistance to replace the rectifier diode to reduce rectification losses.
2. It can greatly improve the efficiency of the DC/DC converter and does not exist by the Schottky barrier voltage caused by the dead zone voltage.
3. Power MOSFET belongs to the voltage control device, it is in the on-time volt-ampere characteristics of the linear relationship.
4. When using power MOSFET as rectifier, the gate voltage must be synchronized with the phase of the rectified voltage in order to complete the rectification function, so it is called synchronous rectification.
5. Synchronous rectification technology is to greatly reduce the rectification loss at the output of the switching power supply, thereby improving conversion efficiency and reducing the heat of the power supply itself.
Output current adjustment method:
1. Adjust the CV potentiometer, according to your load requirements, set the output voltage to your desired voltage value.
2. Set the CC potentiometer counterclockwise about 30 turns, (i.e., set the output current to the minimum), connect the LED, adjust the CC potentiometer to your desired current. For battery charging, after discharging the battery, and then connected to the output, adjust CC to your desired current, (for charging must be used to discharged batteries to adjust only accurate, because the battery is left in the more power, the smaller the charging current.)
Wiring instructions:
OUT+: output positive
OUT-: negative output
+IN: input positive
-IN: input negative
CV: Output voltage adjustment
CC: output current adjustment
EN: enable, low level off output; pause, high voltage level effective
When input and output are grounded, no-load CV output constant voltage, CC output constant current
Note:
Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!
Please allow 1-2cm measuring deviation due to manual measurement.
Package Content:
1*Step Down Module