DC-DC MP1584EN 3A Step Down Power Supply Module

DC-DC MP1584EN 3A Step Down Power Supply Module serves as a highly efficient buck converter that transforms a wide range of DC input voltages into a stable, lower output voltage. Furthermore, this module integrates the MP1584EN step-down switching regulator, which enables it to handle up to 3 A of peak output current. Consequently, the device operates at a high switching frequency of 1.5 MHz, allowing for a significantly smaller physical footprint compared to lower-frequency alternatives. However, users should provide adequate cooling or use a heat sink when operating near the maximum current limit for extended periods. Therefore, this versatile module remains a top choice for powering sensitive digital electronics from higher voltage sources like automotive batteries or wall adapters.

Key Features:

• High Efficiency: Utilizes advanced synchronous rectification to achieve energy conversion efficiency up to 96%.
• Wide Input Range: Accepts input voltages from 4.5 V to 28 V, making it compatible with various power sources.
• High Switching Frequency: Operates at 1.5 MHz, which effectively reduces output ripple and allows for smaller external components.
• Adjustable Output: Features an on-board multi-turn potentiometer for precise voltage regulation between 0.8 V and 20 V.
• Integrated Protection: Includes internal thermal shutdown and current limit protection to prevent damage during fault conditions.

Technical Specifications:

• Input Voltage Range: 4.5 V to 28 V DC
• Output Voltage Range: 0.8 V to 20 V DC (Adjustable)
• Output Current: 3 A (Maximum peak), 1.8 A to 2 A (Continuous without extra cooling)
• Conversion Efficiency: 92% to 96% (Varies by voltage difference)
• Output Ripple: < 30 mV
• Switching Frequency: 1.5 MHz (Typical)
• Operating Temperature: −45°C to +85°C

Mechanical Specifications:

• Regulator IC: Monolithic Power Systems (MPS) MP1584EN
• Board Material: High-quality FR4 PCB
• Potentiometer Type: 10k Ω Multi-turn trimmer
• Mounting Style: Surface-mount module with through-hole solder pads for I/O connections.

Dimensions:

• Length: ≈ 22 mm
• Width: ≈ 17 mm
• Height: ≈ 4 mm
• Weight: ≈ 3 g

Pinout and Wiring:

• IN+ (Input Positive): Connect to the positive terminal of the DC power source (4.5 V to 28 V).
• IN- (Input Negative): Connect to the ground/negative terminal of the power source.
• OUT+ (Output Positive): Provides the regulated DC output voltage to your load.
• OUT- (Output Negative): Connect to the ground/negative terminal of your load.
• Wiring Note: Additionally, ensure that the input voltage remains at least 1.5 V higher than the desired output voltage to maintain proper regulation.

Datasheet Reference:

• Download MP1584EN Step Down Regulator Datasheet

Commonly Used in:

• Arduino Projects: Powering 5 V or 3.3 V microcontrollers from a 12 V or 24 V battery.
• RC Vehicles: Serving as a Battery Elimination Circuit (BEC) for receivers and servos.
• DIY Power Banks: Converting lithium battery voltages for specialized electronic devices.

Applications:

• Automotive Electronics: Regulating noisy vehicle power for sensitive dash cams or GPS modules.
• Distributed Power Systems: Providing localized voltage regulation on larger PCBs.
• Industrial Control: Stepping down 24 V industrial rails to logic-level voltages for PLCs or sensors.

Equivalent Models:

• LM2596 Module: A larger, common alternative, however, it operates at a much lower frequency (150 kHz) and is less efficient.
• Mini-360 (MP2307): A similar ultra-miniature buck converter module suitable for lower current applications (up to 2 A).
• TPS5430 Module: A high-performance industrial alternative offering similar 3 A output capabilities.

Package Includes:

• 1 x DC-DC MP1584EN 3A Step Down Power Supply Module