The 7Semi DC-DC Buck Converter is a powerful and compact step-down switching regulator module based on the AP64500 synchronous buck controller. It accepts a wide input voltage range from 7V to 40V and delivers a stable 5V output up to 5A, making it ideal for powering Raspberry Pi, ESP32, Arduino, microcontrollers, LED strips, motor drivers, and IoT systems.
Designed with efficiency and thermal management in mind, this module integrates a high-performance 500kHz switching controller, a low RDS(on) MOSFET, and optimized layout to ensure stable voltage output and minimal power loss. It is an excellent solution for makers, engineers, and commercial product developers.
Features
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Wide Input Range: 7V to 40V DC input
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Fixed 5V Output: Regulated 5V output voltage (±2%)
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High Current Output: Delivers up to 5A of continuous current
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Built-in AP64500 Synchronous Buck Regulator
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High Efficiency: Up to 90% at typical loads
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500kHz Switching Frequency for small external components
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Integrated High & Low Side MOSFETs for reduced complexity
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Overcurrent, Overvoltage, and Thermal Shutdown Protection
Applications
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Powering Raspberry Pi, Jetson Nano, and other SBCs
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Robotics and automation systems
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IoT edge devices and embedded controllers
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LED lighting strips, backlights, and displays
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Automotive and industrial 12V/24V to 5V conversion
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Communication modules (Wi-Fi, LoRa, GSM)
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Industrial sensors and instrumentation systems
Frequently Asked Questions (FAQ)
Q1: Can this board directly power a Raspberry Pi 4?
A: Yes, it can supply a stable 5V up to 5A, enough for the Pi 4 and peripherals.
Q2: Is the 5V output adjustable?
A: No. The output is fixed at 5V by design.
Q3: What protections are built-in?
A: The module includes Overvoltage Protection (OVP), Overcurrent Protection (OCP), and Thermal Shutdown (OTP).
Q4: Can it be used with 12V or 24V battery systems?
A: Absolutely. It's designed to work with 7V to 40V input, including standard battery packs.
Resources & Documentation
- Input Voltage Range:
- 7V to 40V DC
- Output Voltage:
- 5V (Fixed)
- Output Current Up to:
- 5A continuous
- Efficiency:
- Up to 90%
- Switching Frequency:
- 500kHz
- Operating Temp:
- -40°C to +125°C
- Board Dimensions:
- Approx. 25mm x 22mm
- Board weight:
- 2g
