Yahboom PD Power Expansion Board User Manual

1. Introduction

This manual provides comprehensive instructions for the Yahboom PD Power Expansion Board. This board is designed to provide a stable and efficient power supply solution for various single-board computers, including Raspberry Pi 5, Jetson Nano, Arduino, and STM32 development boards. It supports wide voltage input and offers multiple output interfaces, ensuring reliable operation for your projects.

2. Product Overview

2.1 Key Features

• Raspberry Pi 5 Power Protocol Support: Provides 5V/5A power to Raspberry Pi 5, preventing low voltage and USB current limit warnings.
• Wide Voltage Input: Accepts 6V to 24V DC input.
• Stable 5V Output: Delivers 5V/3A (for 6V input) or 5V/5A (for 7-24V input) to connected devices.
• Multiple Output Interfaces: Includes Type-C, PH2.0-2Pin, DC5.5*2.1, and 6Pin headers for versatile connectivity.
• Dual Type-C Adapter: Comes with an adapter for direct connection and stacking with Raspberry Pi 5.
• Safety Protections: Features input anti-reverse protection, output over-current protection, current-limiting protection, over-voltage protection, and over-temperature protection.
• Compatibility: Supports Raspberry Pi (5, 4B), Jetson Nano, Arduino, STM32, and RDK series.

2.2 Package Contents

• Yahboom Voltage Regulator Board (1)
• Dual Type-C Adapter (1)
• Dual DC end cable 5.2*2.1 & 5.2*2.5 (25cm) (1)
• XH2.54 cable (15cm) (1)
• Screw & Copper Pillar set (1)

Image: Yahboom Voltage Regulator Board with key features highlighted.

Image: Detailed view of the board's functional distribution, showing input and output ports.

3. Setup Instructions

3.1 Connecting to Raspberry Pi 5

1. Stacking Installation: The expansion board can be stacked either above or below your Raspberry Pi 5. Use the provided copper pillars and screws for secure mounting.
2. Dual Type-C Adapter: Connect the included dual Type-C adapter between the expansion board and the Raspberry Pi 5's power input port. This adapter ensures proper power delivery and reduces cable clutter.
3. Ensure the Raspberry Pi 5 is powered off before connecting the expansion board.

Image: Examples of stacking the expansion board above and below a Raspberry Pi 5, utilizing the dual Type-C adapter.

Image: Close-up of the dual Type-C adapter used for connecting the expansion board to Raspberry Pi 5.

3.2 Power Input Connection

The board supports multiple input methods. Choose one based on your power source:

• KF301-2P Terminal: Connect your 6-24V DC power supply to the green KF301-2P screw terminal. Ensure correct polarity (+ to +, - to -).
• XH2.54-2Pin Connector: Use the provided XH2.54 cable to connect to a compatible power source (e.g., battery packs).
• DC5.5*2.5 Jack: Connect a standard DC power adapter (6-24V) to this jack.

Image: Various methods for connecting power input to the expansion board, including battery packs and DC adapters.

3.3 Connecting Other Development Boards

The expansion board offers various output ports for different development boards:

• Type-C (5V output): For Raspberry Pi 5, Jetson Nano, etc.
• PH2.0-2Pin (5V output): For general 5V peripherals.
• DC5.5*2.1 (5V output): For devices requiring a DC barrel jack.
• 6Pin Header (5V output): For connecting to Arduino, STM32, or other custom circuits.

Note: Additional self-purchased cables may be required to connect Arduino and STM32.

Image: Diagram showing various output ports and their compatibility with different development boards like Raspberry Pi, Jetson Nano, Arduino, and STM32.

4. Operating Instructions

1. Power On/Off: Use the ON/OFF slide switch located on the board to control the power supply to connected devices.
2. Indicator Lights:
   • Red light: Power input indicator. Illuminates when input power is present.
   • Blue light: 5V output indicator. Illuminates when 5V output is active.
3. Output Current Adjustment: The board intelligently adjusts output current based on input voltage:
   • 6V Input: Provides 5V/3A output.
   • 7V to 24V Input: Provides 5V/5A output.
4. Raspberry Pi 5 Specifics: For optimal performance and to avoid warnings, ensure the input voltage is 7V or above when powering a Raspberry Pi 5. Always use a high-quality USB-C cable capable of supporting 5A current for the Raspberry Pi 5.

5. Maintenance

• Keep the board in a dry environment to prevent moisture damage.
• Avoid exposing the board to extreme temperatures.
• Clean the board gently with a soft, dry cloth. Do not use liquid cleaners.
• Handle the board with care to prevent physical damage to components or connectors.
• Ensure proper ventilation when in use, especially in enclosed spaces.

6. Troubleshooting

• Raspberry Pi 5 Low Voltage/Current Limit Warning:
  • Cause: Input voltage below 7V, or using a power supply/cable that does not meet the Pi 5's power protocol requirements (5V/5A).
  • Solution: Ensure your input power supply provides at least 7V. Use a high-quality USB-C cable rated for 5A. The expansion board is designed to resolve this when properly configured.
• No Power Output:
  • Cause: Input power not connected, ON/OFF switch in 'OFF' position, or faulty input power source.
  • Solution: Verify input power connection and ensure the red indicator light is on. Check the ON/OFF switch position. Test your input power source.
• Connected Device Not Functioning Correctly:
  • Cause: Insufficient current for the device, incorrect connection, or device malfunction.
  • Solution: Ensure the expansion board is providing enough current (5V/3A or 5V/5A) for your device. Double-check all connections. Test the device with an alternative power source if possible.

Image: Diagram illustrating the Raspberry Pi 5 power supply protocol and how the expansion board helps overcome USB current limitations.

7. Specifications

Image: Detailed dimensions and key parameters of the expansion board.

8. Warranty Information

This product is covered by a warranty for 90 days from the date of delivery. Please retain your proof of purchase for warranty claims. The warranty covers manufacturing defects but does not cover damage caused by misuse, accidents, unauthorized modifications, or improper installation.

9. Support

For technical support, product inquiries, or any issues you may encounter, please contact Yahboom customer service:

• Website: yahboom.net/download (for resources and downloads)
• Email (Amazon Customers): amazon@yahboom.com
• General Support Email: support@yahboom.com

Our support team is ready to assist you.