PowerPole Power Supply HAT for Raspberry Pi Zero (12-24V)

Overview

The PowerPole Power Supply HAT for the Raspberry Pi Zero is designed to minimize ripple and ensure low noise levels, with peak-to-peak ripple remaining below 15mV.

Functionality

This Raspberry Pi Zero HAT mounts directly on top of a Raspberry Pi Zero, while maintaining access to all GPIO headers via an extension header, allowing the stacking of additional Raspberry Pi HATs.

Compatibility

This HAT has been tested and is compatible with the following Raspberry Pi models:

• Raspberry Pi Zero
• Raspberry Pi Zero W
• Raspberry Pi Zero WH
• Raspberry Pi Zero 2 W
• Raspberry Pi 3 (preferably use board 2023-P-811 instead)
• Raspberry Pi 4 (preferably use board 2023-P-811 instead)
• Raspberry Pi 5 (preferably use board 2023-P-811 instead)

Technical Specifications

• PCB Material: ENIG (Electroless Nickel Immersion Gold) finish
• RoHS Compliance: Yes
• Component Orientation: Upward-facing (alternative downward-facing version available for additional RF shielding in stacked configurations)
• Regulator IC: LM2596S
• Ripple: < 15mV peak-to-peak
• Input Voltage Range: 12V – 24V
• Output Voltage: ±5V
• Maximum Current Output: 3A
• Radiated Emissions: Below 10 dBuV peak (per test results)

This PowerPole Power Supply HAT is an efficient and reliable power solution for the Raspberry Pi Zero, ensuring stable operation while maintaining minimal RF interference.

Performance Measurements

All measurements were performed at the start of the Raspberry Pi Zero boot sequence, followed by a high CPU usage operation to assess power consumption variations.

Ripple

Maintained below 15mV peak-to-peak under standard operating conditions.

Radiated Emissions (1 MHz – 500 MHz)

Radiated emissions were evaluated using a compact Transverse ElectroMagnetic (TEM) setup connected to an analyzer, terminated with a 50-ohm load, offering insights into potential RF interference.

Measuring the Raspberry Pi Zero with a clean 5V lab power supply

Measuring the Raspberry Pi Zero using the PowerPole Power Supply HAT