The DSP-2440 is a high-efficiency DC-DC converter capable of converting 24V or 48V battery systems to a stable 12V output (12.6V actual). It also supports solar PV input up to 80V, delivering a maximum current of 40A and output power of 500W. Its sync buck design achieves a remarkable 95–98% efficiency, reducing energy loss and heat generation for optimized performance.

The DSP-2440 operates in two primary modes:

• MPPT Mode (Solar Mode): Optimizes solar panel output by tracking the Maximum Power Point, ensuring maximum energy harvesting.

• Regulation / PSU Mode: Converts battery voltage efficiently to 12V DC for reliable operation of low-voltage DC devices.

This dual-mode operation makes the DSP-2440 a versatile tool for both renewable energy and traditional battery systems.

Why use this device?

The DSP-2440 is designed to solve real-world power challenges across a wide range of applications:

1. Integration with 24V/48V Battery Systems

• Ideal for on-grid or off-grid inverters with 24V/48V battery banks.

• Converts high-voltage battery output to 12V DC to power lights, fans, pumps, refrigerators, and other commonly available DC appliances.

• Bridges the gap between higher-voltage battery systems and low-voltage DC loads.

2. Direct Solar to 12V MPPT Applications

• Perfect for small solar projects requiring direct 12V DC output.

• Ensures maximum energy extraction from PV panels using MPPT technology, outperforming conventional PWM controllers.

• Powers 12V DC accessories directly from solar panels without needing an intermediate battery.

3. DC Appliance Power Supply from Battery Backup

• Provides reliable 12V output from 24V/48V battery banks.

• Supports DC refrigerators, water pumps, LED lighting, and other electronics in RVs, boats, off-grid homes, and telecom systems.

5. Mobile and Vehicle Solar Systems

• Supports 12V DC loads in mobile setups like caravans, electric vehicles, boats, and field vehicles.

• Converts higher-voltage batteries (24V/48V) efficiently to 12V, enabling the use of standard 12V accessories.

6. Laboratory and Industrial Power Supply

• Functions as a high-current regulated 12V power supply for testing electronics or charging lead-acid and Li-ion batteries.

• Ideal for prototyping and testing 12V DC devices using 24V/48V sources.

7. Emergency and Backup Systems

• Provides 12V power from high-voltage battery banks during outages.

• Powers emergency lighting, pumps, fans, and communication devices reliably.

8. Renewable Energy Education and Demonstration

• Useful in academic or training environments for demonstrating MPPT solar conversion and DC-DC step-down efficiency.

How to Use?

1. Mode Selection

• MPPT Mode: Connect solar panels and select MPPT to optimize power extraction and power 12V load directly from the solar power.

• Regulation / PSU Mode: Use when converting 24V/48V battery voltage to fixed 12V DC.

2. Connections

• Connect positive and negative terminals of the battery or solar PV to input terminals.

• Connect output terminals to 12V DC loads, ensuring correct polarity.

• For MPPT mode, input voltage from PV panels should not exceed 80V.

3. Safety Check

• Always select the correct mode before powering the device.

• Turn on the DSP-2440 and verify output voltage and current if needed.

4. Cooling and Environment

• Ensure adequate ventilation, as the device may heat under high loads.

• Operate in dry, dust-free environments for maximum longevity.

5. Maintenance

• Minimal maintenance required. 

Features:

• Converts 24V/48V battery systems to 12.6V output
• Connects directly to PV panels up to 80V
• Maximum output current: 40A
• Maximum output power: 500W
• High-efficiency sync buck conversion up to 95–98%
• MPPT mode for solar maximum power tracking
• Regulation/PSU mode for battery step-down
• Stable, fixed 12.6V output
• Easy-to-select operating mode before power-on
• Compact and reliable design for long-term use

Applications:

• Step-down 24V/48V battery systems to power 12V DC solar accessories such as lights, fans, and pumps
• Direct solar PV to 12V output applications requiring MPPT for maximum efficiency
• Off-grid and on-grid inverter systems to integrate 12V DC devices with higher voltage battery banks
• DIY solar projects requiring high-efficiency voltage conversion
• Remote solar-powered systems for homes, cabins, or small-scale installations
• DC microgrid projects where multiple voltage levels are needed
• Industrial or commercial 12V solar DC loads from 24V/48V battery storage

Specifications:

• Brand: BDTronics
• Model: DSP-2440
• Input Voltage: 24V/48V battery system
• PV Input Voltage: Up to 80V
• Output Voltage: 12.6V (Fixed)
• Maximum Output Current: 40A
• Maximum Output Power: 500W
• Efficiency: 95–98%
• Operating Modes: MPPT mode, Regulation/PSU mode
• Conversion Type: Sync buck DC-DC

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