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Custom Magnetics Prototypes

ConverNova builds custom transformer, inductor and common mode choke prototypes from a single unit. Based in Madrid, Spain, we aim to return an engineering answer within 24 hours and deliver prototypes in 4 to 8 weeks from an agreed design, when the required raw materials are in stock. There is no minimum order quantity, and the prototype comes off the same drawing that will later go to production.

Send us your spec

How to order

Five steps, and you know where you are at every one.

01

Send your specification

Topology, electrical, mechanical and environmental. Attach CSV waveforms or specification files up to 10 MB. If the magnetics spec is not written yet, a schematic and a waveform are enough: defining it is the part we are good at.

02

Engineering answer usually in 24 hours

A power electronics engineer reads it, not a mailbox. You get a first design proposal with estimated core and winding losses, leakage and magnetizing inductance, dimensions and the expected hotspot temperature.

03

Agree the design, then the price

We adjust against your priorities: efficiency, size, cost. We tell you where the three pull against each other so the trade is yours to make. The quote follows the agreed design.

04

We build it

Four to eight weeks from the agreed design, when the required raw materials are in stock, with progress updates along the way. If a material is on long lead we say so on day one rather than at week six.

05

Measured, then shipped

Every part is measured before it leaves. Inductance, leakage, DC resistance, and hipot, with a test report.

06

And then production

Same design, same drawing, same materials, same people. Nothing gets redesigned when the volume arrives, and we have been looking at manufacturing cost and DFM since day one.

What arrives

A part, and the numbers behind it.

The report is not an extra. It is how you close the loop between your simulation and your bench.

Send us your spec
Measured
Inductance, leakage inductance, interwinding capacitance and DC resistance, at your switching frequency
Loss split
Core loss and winding loss separately, so you know which one to attack if you need more efficiency
Thermal
Temperature rise under your real waveform and your cooling method, with the hotspot location
Safety
Hipot, and partial discharge where the application asks for it

Straight answers

Prototypes, the usual questions.

How fast is a prototype, really?
Four to eight weeks from an agreed design, if the required raw materials are in stock, and we aim to have the engineering answer with you inside 24 hours. When your schedule is tighter, say so and we will tell you what is actually possible instead of what you want to hear.
What is your minimum order?
One. Most of our first projects start as a single unit and a problem nobody else wanted to look at.
Do I pay for the design?
The engineering review and the first design proposal are free. You see the loss distribution and the parameter values before you commit to anything.
Will the production part be the same as the prototype?
Yes. Same design, same drawing, same materials, same people. That is the point of designing for manufacturing from day one instead of at the end.
We are a small team. Are we too small for you?
No.

Construction

From prototype to production.

The same construction from the first unit to the series, which is why nothing gets redesigned when the volume arrives.

A transformer encapsulated in a case on a mounting plate
A row of varnished transformers on a mounting rail, lead terminated
A housed magnetic assembly with one AC input and two DC output glands

Start here

Send us your spec.

Or just the schematic and the waveform. Engineering answer, we aim for 24 hours.

Send us your spec