DC-DC Step Down Buck Converter 7 - 32V to 0.8 - 28V 300W 12A

DESCRIPTION

Add a step down power converter easily into your project with this buck converter. This buck converter output can be adjusted from 0.8 - 28V. All components are soldered nicely into a PCB for you so you don't have to do all the hard work!

This buck converter is made from a dedicated benchmark IC and high-precision current sensing resistor, proving a more stable constant current. It has 4 high frequency capacitors which can lower output ripple, which enhances the work stabilization.

You can use this buck converter as a battery charger or LED constant current driver. Instructions are at the bottom of the page.

Battery Charging

1. Use the multimeter in 10A current scale to measure output short-circuit current, and adjust the current potentiometer to set the output current to the expected charging current
2. Adjust the constant voltage potentiometer to set the output voltage to the float voltage
3. Connect to the battery to charge
4. Red LED indicates charging, green LED indicates fully charged

LED Constant Current Drive

1. Use the multimeter in 10A current scale to measure output short-circuit current, and adjust the current potentiometer to set the output current to the expected LED operating current
2. Adjust the constant voltage potentiometer to set the output voltage to the maximum LED operating voltage
3. Connect LED, test

REVERSE POLARITY WILL FRY THE BOARD IMMEDIATELY. PLEASE TAKE CAUTION TO MAKE SURE POLARITY IS CORRECT.

TECHNICAL DETAILS

• Conversion Efficiency: Up to 95%
• Switching Frequency: 300KHz
• Input Voltage: 7 - 32V
• Output Voltage: 0.8 - 28V
• Output Current: Rated current 9A, maximum 12A (Additional cooling fan is required)
• Output Ripple: < 50mA
• Indicator: Dual color indicator, charging indicator light is red, the green light means fully charged (no load is green)
• Potentiometer Adjustment Direction: Clockwise (increase), Anti-clockwise (decrease)
• Module Properties: Non-isolated step-down module (buck)
• Short Circuit Protection: Yes, constant current
• Operating Temperature: -40 to 85 °C
• Full Load Temperature Rise: 40 °C
• Load Regulation: ± 1%
• Voltage Regulation: ± 1%
• Dynamic Response Speed: 5% 200uS
• Connection Mode: Screw terminals

SHIPPING LIST

• 1x DC-DC Step Down Buck Converter 7 - 32V to 0.8 - 28V 300W (12A)