Although the LSIB-HPULN PS is the "High Current" version of the "High Performance Ultra Low Noise" Power Supply delivering up to 5 ampere for power-hungry devices, the real benefit is the dramatically reduced noise through 10x LT3045 in parallel operation.

This current might not be necessary in your application, nonetheless this fact is worth this power supply to become our recommendation.


"Ideal Diode Bridge" rectification

What makes this LSIB-HPULN PS very special, is it's rectifier:

The LT4320 is an "Ideal Diode Bridge" controller that drives four MOSFET's resulting reduced power dissipation and heat. 

Comparing to the Schottky's voltage drop of ~ 0,4V, the MOSFETs with it's resistance of ~ 0,009 Ohm causes a minimal voltage drop only. This makes it possible to use smaller transformers regarding their output voltage and their power rating. See the picture above for a comparison between the "Ideal Diode Bridge" controlled HPULN and the known HPULN with Schottky diodes.

Please notice, that the controller needs 9VDC to work, the used transformer should be >9VAC.


Anti-transformer-ringing snubber

The LSIB-HPULN has a snubber option, which makes it possible to significantly reduce transformer ringing. Please see "Quasimodo PCB" for more information. In case of ordering this power supply with a transformer, the snubber will already be configured. In case it's ordered alone, the snubber can be set by the customer - we recommend to use the Quasimodo jig for that purpose.

The LSIB-HPULN power supply can also be used without a snubber.


With a bigger heatsink mounted it is also capable to better dissipate heat from the regulators.


The scope of application is a main power supply for any kind of devices with a need of up to 5 ampere, i.e.:

- Audio interfaces

- DAC's

- Small amplifiers

- Audio-Computers


As usual this power supply comes fully assembled and tested for seamless working.


For more information regarding heat and transformator recommandation please note the instructions in our FAQ.

LSIB-HPULN PS Single Rail 5A

199,00 €Price
PCB Colour: Black
  • Dimensions: 99 x 51mm / 3.9 x 2.01"

    Height (without spacers): 52mm / 2.05"

    PCB copper thickness: 70µm / 2oz


    Input Voltage: max. <12VAC / 0-20VDC

    Output Voltage: Adjustable 0-15VDC

    (Preadjusted to your desired output voltage)

    Output Current: 5A


    Ultralow RMS Noise: 0.8µVRMS (10Hz to 100kHz) per regulator

    Further reduced noise by 10x LT3045 in parallel operation

    Ultralow Spot Noise: 2nV/√Hz at 10kHz

    Ultrahigh PSRR: 76dB at 1MHz

    Wide Input Voltage Range: 1.8V to 20V

    High Bandwidth: 1MHz


    High quality parts only

    Low ESR capacitors

    Low TC resistors

    Aluminium-Polymer capacitors (OS-CON, K750)

    Soldered with silver alloy