2021-P-052 | PowerPole Power Supply HAT for Raspberry Pi Zero 12-24V

PowerPole Power Supply HAT for Raspberry Pi Zero

This Power Supply HAT for the Raspberry Pi Zero was designed to minimize ripple, ensuring low noise levels, the peak to peak ripple remains below 15mV.

Function

This Raspberry Pi Zero HAT can be attached on top of a Raspberry Pi Zero, maintaining access to all GPIO headers through the extension header, allowing you to stack any Raspberry Pi HAT on it.

We tested this hat on these Raspberry PI's:

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

Measurements

All of these measurements were performed at the start of the Raspberry Pi Zero's boot sequence, followed by a subsequent operation that triggers a notable rise in CPU usage and, consequently, an increase in power consumption.

Ripple

Radiated emmissions 1 MHz till 500 MHz

We assessed radiated emissions by utilizing a compact Transverse ElectroMagnetic (TEM) setup linked to an Analyzer and capped with a 50-ohm load, providing insight into potential RF interference.

Measuring the Raspberry pi zero with a clean 5V labo supply.

Measuring the Raspberry Pi Zero together with PowerPole Power Supply HAT for Raspberry Pi Zero.

Datasheet

• Utilizing PCB ENIG (Electroless Nickel Immersion Gold) technology
• Compliant with ROHS regulations
• Configured in an upward-facing orientation (an alternative version is available with components facing downward, providing additional RF shielding for stacked HATs).
• Designed around the LM2596S integrated circuit.
• Ripple levels are within the range of less than 15mV peak-to-peak, as indicated by measurements (See above).
• Acceptable input voltage falls between 12v and 24v
• The output voltage is ±5V.
• Capable of delivering a maximum current of 3A.
• Radiated emissions are within the acceptable range, measuring below 10 dBuV peak, as shown in test results.

Bill of materials

• 4 small spacers
• 4 large spacers
• 4 hexagonal bolts
• 1 40-pin stacking header
• 2 common-mode chokes
• 1 PP45 connector with pins

Procedure for Assembly

Securely attach the PP45 connector to the PCB using superglue, proceed to solder the PP45 connector, followed by soldering the 40-pin stacking header with the pins oriented in an upward direction. Lastly, solder the two chokes into place.

Thoroughly clean the PCB by using isopropyl alcohol to eliminate any residual flux.