Name: Dc 9A 300W Step Down Buck Converter 7-40V To 1.2-35V Power Module
SKU: 2234202

Product Details ＋

Dc 9A 300W Step Down Buck Converter 7-40V To 1.2-35V Power Module

This 10A Adjustable Constant Current Power Supply is designed for stable and precise current regulation, ideal for LED drivers. It features a dedicated reference IC and high-precision sampling resistor for minimal temperature drift and stable performance. The maximum output current reaches 10A, meeting most power needs. With 4 high-frequency capacitors to reduce ripple and a double heat sink design, it ensures efficient heat dissipation.

The system uses pure copper wires for better efficiency and heat reduction. The 3296 multi-turn potentiometer allows accurate voltage and current adjustment. It also includes a two-color indicator light to show the working status clearly. Adjustable voltage and current make this power supply versatile and reliable for various applications.

Technical Details

Module Characteristics: Non-isolated step-down constant current, constant voltage (CV CC) charging module
Input Voltage: DC 7-32V
Output Voltage: 1.2V-28V adjustable, or fixed output 0.8V-28V
Output Current: 8A (cooling fan required if power tube temperature exceeds 65°C)
Constant Current Range: 0.2-8A (adjustable)
Turn Lamp Current: Constant current value * 0.1 (e.g., for 3A constant current, the lamp current is 0.3A)
Lowest Pressure: 1V
Output Power: Maximum 200W
Conversion Efficiency: Up to 95%
Operating Frequency: 300KHz
Output Ripple: 20M bandwidth
Ripple at 24V input, 12V output, 5A: Around 50mV (excluding noise)
Output Short Circuit Protection: Yes, constant current
Input Reverse Polarity Protection: None
Output Backflow Prevention: None
Wiring: Terminal
No-load Current: Typical 20mA (24V switch 12V)
Load Regulation: ± 1% (fixed)
Voltage Regulation: ± 1%
Dynamic Response Speed: 5% 200uS
Adjustment Direction Potentiometer: Clockwise to increase voltage, counterclockwise to decrease. CV adjusts input voltage, CC adjusts current.
Operating Temperature: -40°C to 85°C (industrial grade, with temperature considerations for power tube)
Indicator: Dual-color indicator (Red for charging, Green for fully charged, No load is green)
Size: 65x47x22mm (L x W x H)
Accuracy of Constant Current and Temperature: Less than 5% change in constant current value from 25°C to 60°C (5A constant current)
Output Short Circuit Protection: Yes, constant current setting value applies
Input Reverse Connection Protection: No
Output Prevent Reverse Flow: No
Wiring Method: Amphenol connector

Features

Turn lamp current is 0.1 times the current value for battery charge indication.
Stable constant current with <1% temperature drift, ideal for LED drivers.
Max output current: 8A.
High-frequency capacitors reduce ripple and improve stability.
Double heat sink design for effective heat dissipation.
Sendust Core and pure copper wiring for better efficiency and less heat.
Precise voltage and current regulation with 3296 multiturn potentiometer.
Dual-color indicator for clear working status.
Adjustable voltage and current for optimized performance.

Battery charge:

Check the required battery float voltage, charging current, and module input voltage.
Adjust the constant voltage potentiometer to set output voltage to around 5V.
Use a multimeter (10A scale) to measure output short-circuit current and adjust the current potentiometer to the desired charging current.
Adjust the constant voltage potentiometer to match the float voltage.
Connect the battery and test the charging process. (Steps 1-4 should be done with no battery connected.)

LED constant current drive:

Check the operating current and max operating voltage of the LED.
Adjust the constant voltage potentiometer to set output voltage to around 5V.
Use a multimeter (10A scale) to measure output short-circuit current, then adjust the current potentiometer to match the LED operating current.
Adjust the constant voltage potentiometer to reach the maximum LED operating voltage.
Connect the LED and test. (Steps 1-4 should be done with no LED connected.)

Applications :

High-Power LED Driver: Powers high-intensity LEDs for lighting and displays.
Lithium Battery (or Lead Accumulator) Charge: Charges lithium or lead-acid batteries in various devices.
Vehicle-Mounted Power Supply: Provides power to vehicles' electrical systems, including inverters and accessories.
Low Voltage System Power Supply: Supplies power for low-voltage electronics and devices.
6V, 12V, 14V, 24V Battery Charge: Charges various battery types (6V, 12V, 14V, 24V) for different applications.
On-Board Laptop Power Supply: Powers laptops or portable computers in vehicles or mobile setups.
Regulated Power Supply: Provides a stable voltage output for sensitive electronic equipment.
Low Voltage Power Supply System: Powers systems requiring low voltage for operation, such as sensors or communication devices.