LinearPi Pro is a new generation top-quality high current ultra-low noise audiophile grade linear power supply. It can deliver up to 5A continuous output current at extremely low-noise level which is much suitable for Raspberry Pi 5 and other high current noise sensitive applications. It could be the best linear power supply solutions for both digital and analog audio applications.
LinearPi Pro New Features
• 5A high continuous output current.
• 2.5 mOhm ultra-low output impedance.
• New parallel power output stages architecture.
• 4 layers double copper thickness PCB for higher current density and additional shield layers.
• 29080 uF total filtering capacitance.
• Enhanced Kelvin sense input to lower the output impedance and improve performance.
• Actual noise level superior to LinearPi MkII because of the shield layer and the new parallel architecture.
• New low drop high speed high current soft recovery Schottky rectifiers.
• Bigger size heatsink
Real measurement shows that the LinearPi Pro has a super great load transient response performance. The output voltage drop is only 10mV at ultra-low noise level when output current changes over very big steps between 1A to 5A. The actual dynamic output impedance is only 2.5mOhm (@1kHz), which could be the best performance among all the low-noise linear power supplies in the market.
Load current steps: 1A to 5A, Output voltage: 5V
Frequency: 1kHz, Duty cycle: 50%, Probe: 1:1, 10mV/DIV
LinearPi Pro can also upgrade with a UcConditioner Pro to make an even more improvement to the low-noise performance
It’s highly recommended to enable the enhanced Kelvin sensing function when working with a UcConditioner Pro
Difference between LinearPi MkII
|
LinearPi |
LinearPi Pro |
|
|
Rated constant Output current |
2.5A |
5A |
|
Total filtering capacitance |
13640uF |
29080uF |
|
Architecture |
Single power stage |
Parallel power stages |
|
PCB |
Two layers double thickness copper high current PCB |
Four layers double thickness copper high current PCB with two additional shield layers |
|
Ultra low Noise |
0.8uV RMS rated |
0.8uV RMS ratedActual noise could be even lower because of the parallel power output stages and the additional shield layers |
|
Heat sink |
15X50X50 mm |
25X50X50 mm |
|
Schottky rectifiers |
High speed |
High speed, ultra-low drop |
