DC-DC CC CV Buck Converter Step-down 7-32V to 0.8-28V 12A Power Supply Module

Description: Product Related Module nature: non isolated step-down constant current and constant voltage module (CC CV) charging module Scope of application: high power LED constant current drive, lithium battery charging (including ferroelectricity), 4V, 6V, 12V, 14V, 24V battery charging, nickel cadmium nickel hydrogen battery (battery pack) charging, solar panel, wind turbine Input voltage: 7-32v (without constant current 5-32v). Now the latest input voltage is up to 40V Adjustable output voltage: (281.8-2) continuous (2) Fixed output (any choice between 0.8-28v). Please tell the shopkeeper when you buy. (for the time being, it is only for batch customers, and all samples are sent to adjustable type) (3) If you need higher voltage, please contact me directly Output current: maximum 12a (the latest output current is 8-9a) (if the temperature of the power tube exceeds 65 ℃, please add a fan for heat dissipation. Generally, no fan can be added in the open environment within 24V to 12V 6a) Constant current range: 0.2-12a (adjustable) (not available without constant current) (latest output current: 8-9a) Rotating lamp current: constant current value * (0.1). The rotating lamp current is linked with the constant current value. For example, the constant current value is 3a, and the rotating lamp current is set to 0.1 times of the constant current (0.1 * 3A = 0.3A). When the constant current value is adjusted to 2a, the rotating lamp current is 0.1 times of the constant current (0.1 * 2A = 0.2A) The second version is fixed at 0.1 times (the actual lamp turning current is approximate, but not very accurate) to indicate whether it is fully charged. Lowest voltage difference: 1V Output power: the maximum power is about 300W. If the temperature of the power tube exceeds 65 ℃, please add a fan. Conversion efficiency: up to about 95% (the higher the output voltage, the higher the efficiency) Working frequency: 300kHz (latest frequency: 180khz) Output ripple: 20m bandwidth (for reference only) Input 24V output 12V 5A ripple about 50mV (excluding noise) Working temperature: industrial grade (- 40 ℃ to + 85 ℃) (please pay attention to the power tube temperature in actual use. If the temperature is too high, please strengthen heat dissipation) No load current: typical 20mA (24V to 12V) Load adjustment rate: ± 1% (constant pressure) Voltage regulation rate: ± 1% Constant current accuracy and temperature: in the actual test, the temperature on the module changes from 25 degrees to 60 degrees, and the change of constant current value is less than 5% (constant current value 5a) Dynamic response speed: 5% 200us Potentiometer adjustment direction: clockwise (increase), counterclockwise (decrease), the potentiometer close to the input is voltage regulation (CV), and the potentiometer close to the output is current regulation (CC) Indicator light: two color indicator light, red during charging, green after charging (green without load) and red without constant current. Output short circuit protection: Yes, constant current (currently set constant current value) Input reverse connection protection: none, Output anti countercurrent: none. Wiring mode: terminal block 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 and 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. Adjust the constant voltage potentiometer to make the output voltage reach the floating charge voltage; 5. Connect the battery and test charge. (steps 1, 2, 3 and 4 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 maximum working voltage you need to drive the LED; 2. Adjust the constant voltage potentiometer and 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 maximum working voltage of LED; 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.) Shipping Our shipping cost includes the cost of the packaging box, the materials used to protect the product and/or all other materials used during the processing of the product, residential shipping fee, and handling fee. Payment Before you bid, we want to let you know that we accept Paypal Only. Please pay for it as soon as possible after you win the bid. We would send it out in the current work day, or the next work day. Return Policy We guarantee refund cash in 30 days. 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Price: 8.99 USD

Location: Exeter, New Hampshire

End Time: 2024-08-10T04:18:21.000Z

Shipping Cost: 0 USD