DC Car Power Supply Voltage Regulator Buck Converter is a high-performance adjustable DC-DC step-down power supply module designed to convert higher DC input voltage into a lower stable adjustable output voltage. This compact buck converter supports 5V-40V input voltage and provides adjustable 1.2V-36V output, making it suitable for automotive power systems, DIY electronics, LED lighting, battery charging, and portable power supply applications.

This DC buck converter module features high efficiency switching technology, over-current protection, compact design, and stable voltage regulation. It is ideal for converting vehicle battery voltage, adapter output, or other DC sources into a safe lower voltage supply for electronic circuits and devices.

Features:

• Adjustable DC-DC step-down buck converter module

• Wide input voltage range: DC 5V-40V

• Adjustable output voltage: DC 1.2V-36V

• Maximum current support up to 12A

• High efficiency voltage conversion design

• Suitable for automotive 12V and 24V power systems

• Compact size for easy installation

• Stable output voltage regulation

• Built-in protection features

• Suitable for LED driver applications

• Supports battery charging applications

• Ideal for low voltage DC power systems

• Non-isolated step-down converter design

• Suitable for DIY electronics and power supply projects

300W DC-DC CC CV Buck Step-Down Converter is a powerful adjustable voltage regulator module designed for high-current applications. It supports DC 7V-32V input and provides adjustable 0.8V-28V output with constant current and constant voltage control. This module is suitable for LED drivers, battery charging systems, vehicle-mounted power supplies, and industrial low-voltage power applications.

Features:

• High-power 300W DC buck converter module

• Constant Current (CC) and Constant Voltage (CV) adjustment

• Adjustable output voltage: DC 0.8V-28V

• Input voltage range: DC 7V-32V

• Maximum output current: 8A

• Adjustable constant current range: 0.2A-8A

• Maximum power output: 300W

• High conversion efficiency up to 95%

• Built-in short circuit protection

• Onboard LED load status indicator

• Red LED indicates load connected or charging condition

• Green LED indicates no load or charging completed

• Suitable for battery charging applications

• Suitable for high-power LED driving

• Industrial temperature operation support

• Compact and durable PCB design

Applications:

• Car power supply voltage conversion

• Vehicle-mounted power supply

• LED lighting power driver

• High-power LED constant current driver

• Lithium battery charger

• Lead acid battery charger applications

• Solar power systems

• Low voltage electronic devices

• Arduino and DIY electronics projects

• Industrial control systems

• Portable power supply systems

• Robotics power solutions

• Electronic testing equipment

How to Use:

• Connect DC input power source to the input terminals.

• Adjust the output voltage according to the required device voltage.

• For battery charging, adjust voltage and current limits according to battery specifications.

• Connect the load after setting the required output parameters.

• Monitor LED indicators during charging or load operation.

• Provide additional cooling when operating at high current levels.

LED Indicator Functions:

• Red LED: Load connected, output active, or battery charging status.

• Green LED: No load connected or battery charging completed.

Product Instructions:

• Check input and output polarity before connecting power.

• Input reverse polarity protection is not included; use a protection diode if required.

• Do not exceed the maximum output current and power rating.

• When operating above 60°C, improve cooling with an additional heatsink or fan.

• Reduce power usage in high-temperature environments.

• Ensure proper ventilation during continuous operation.

• This module is non-isolated; input and output share a common ground.

Specifications:

• Product Type: DC-DC Buck Converter Module

• Converter Type: Step-Down Voltage Regulator

• Input Voltage: DC 5V-40V

• Output Voltage: DC 1.2V-36V Adjustable

• Maximum Current: 12A

• Power Rating: 100W Approx.

• Module Type: Adjustable Voltage Converter

300W Buck Converter Specifications:

• Input Voltage: DC 7V-32V

• Output Voltage: DC 0.8V-28V Adjustable

• Maximum Output Current: 8A

• Constant Current Range: 0.2A-8A Adjustable

• Maximum Output Power: 300W

• Conversion Efficiency: Up to 95%

• Output Ripple: 50mV

• No Load Current: 20mA (24V input, 12V output reference)

• Voltage Regulation: ±1%

• Load Regulation: ±1%

• Dynamic Response Speed: 200uS 5%

• Operating Temperature: -40°C to +85°C

• Short Circuit Protection: Yes

• Reverse Input Protection: No

• Cooling Requirement: Additional Cooling Above High Load

• Module Size: 65 x 47 x 22mm

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