OPTIMO_ATX - truly linear ATX power supply

[RickyV]

46 minutes ago, Marcin_gps said:

OPTIMO ATX – world’s first truly linear ATX PSU for audiophiles. We are almost there.

The heart of JCAT OPTIMO ATX PSU’s is a separate  Linear Regulator Board for each power line; 12V, 5V and 3.3V, providing 23A of continuous current. Its main components are: rectifier, smoothing capacitors bank and linear regulators.

KEY DESIGN FEATURES:

ACTIVE RECTIFIER

For the OPTIMO ATX whopping current we designed unique active rectifier. It is using MOS FET transistors instead of diodes that are switched at zero points of AC waveform by special circuit. The MOS FET in this application has forward resistance below 1 mOhm (0.001 Ohm) – this outperforms diode resulting in much better dynamic response. JCAT designed analog control circuit with so called “floating ground” which means that there is no ground connection for rectifier at any point that otherwise might be path for introducing noise into DC circuit. This further ensures best noise performance as with GHz speed of MOS FETs there is practically no switching noise.

SUPERB PERFORMANCE

Eleven low impedance capacitors of total 110mF (110.000 uF) will ensure outstanding dynamic performance of OPTIMO ATX. On the graph below, the green line shows output voltage. You can observe superb response for step change of load (turquoise line).

 

 

CAPACITORS BANK

We chose high quality 105 Celcius degrees capacitors for trouble free operation in years to come, and designed in significant margin so even with some capacitance lost over time, there will be no effect on the OPTIMO ATX’s performance. Built to last, as we like things in JCAT.

 

 

LINEAR REGULATORS

The OPTIMO ATX is world’s first truly linear ATX power supply with no switching power circuits at any point. For cutting edge performance, instead of discrete elements, we used 11 state of an art LT3086 integrated linear regulators working in parallel. In result, the RMS noise of the OPTIMO ATX is impressive <15uV. We carefully optimised the PCB layout for shortest signal path, impedance and heat dispatch.

 

 

 

SUPERB BUILD QUALITY

High quality components, from resistors to connectors. Significant design margins. Gold plated 70 um copper PCB. Heat transfer elements made of pure copper. EU placed supply chain. Everything to ensure superb quality. The OPTIMO ATX PSU complies with these safety regulations: directive 2014/35/UE EMC, 2014/30/UE RoHS 2, 2011/65/UE, EN 62368-1, EN 50419 and EN-61558-1.

 

 

 

 

 

DISCLAIMER

All above information and specifications are preliminary/prototype and final product may vary.

Very nice Marcin. Two questions, what are its input requirements? And of course what does it cost?

[RickyV]

1 hour ago, Marcin_gps said:

It will come in a nice enclosure with high-quality DC cables.  (render image of the enclosure below)

 

The pictures above show only one regulator board. There will be 3 regulator boards (for each power line; 12V, 5V and 3.3V), power transformers (separate for each line) and control logic board. 

 

In other words; it's a plug & play product requiring no expert knowledge from a user. 

ah okay now I understand.

My guess, it will be very good and very expensive.

[RickyV]

I do not think the teradak uses regulators capable of delivering 23A on every rail with less then 23uV of noise. 

[RickyV]

17 minutes ago, manisandher said:

JCAT INTRODUCES THE ONLY 100% LINEAR COMPUTER POWER SUPPLY ON THE MARKET"

yes I saw that too, not sure what that means