Juan F. Serrano | Power Electronics Design

How I help

Three reasons to call me

Different situations, same need: a senior power electronics engineer who can get into the details fast.

A hard problem nobody has solved

Something isn't working and the root cause is still unclear.

Our amplifier is inefficient and we're failing emissions testing.
We can't drive the actuator any faster.
Our supply's output has too many harmonics.
Our electronics BOM is too expensive to hit our target price.

Your team is out of bandwidth

Your engineers are good. They're also fully booked.

We need a senior power electronics engineer for a few months.
Can someone take on EMI and certification?
Combine these separate boards into one PCB.

An idea with no one to build it

You know what the product should do. You need it designed.

We want a sensor powered by the current it measures.
We need a test rig for a specific current pulse.
Turn this concept into a validated prototype.

The offer

A solution and a roadmap for your problem. Free.

Most firms want a contract before they think about your problem. I do it the other way around: I study it first, show you how I'd solve it, and you decide whether to move forward.

Zero obligationThe roadmap is yours to keep, whether you work with me or not.

5 business daysFrom your first call to a written plan in your inbox.

Straight answersIf it isn't a fit for me, I'll tell you and point you to someone who can help.

The Power Roadmap

What you get, in writing:

Problem breakdownRoot-cause hypotheses and what's really driving the issue.

Proposed solutionArchitecture, key design choices and the trade-offs behind them.

Step-by-step roadmapMilestones from analysis to validated hardware, with the risks called out.

Fixed price and timelineExactly what moving forward would cost. No hourly surprises.

A 30-minute review callI walk your team through the plan and answer questions.

$0I take a limited number of roadmaps each month so each one gets real engineering time.

Claim your free roadmap

How it works

From problem to plan in four steps

Step 1

Tell me the problem

A short call or email. Share what you can; I'm happy to sign an NDA first.

Step 2

I dig in

Simulation, calculations and a design review of what you share.

Step 3

Get your roadmap

Solution, milestones, risks and a fixed quote within 5 business days.

Step 4

You decide

Move forward with me, run it in-house, or keep the plan for later.

If you move forward

Three ways to work together

Problem-solving sprint

A focused, fixed-scope push to find the root cause and fix it.

Loss, thermal and EMI investigations
Architecture review and redesign
Electronics BOM cost reduction
Validation that proves the fix

Team extension

A senior power electronics engineer on your team, part-time and remote, for as long as you need.

Design reviews and mentoring
Schematic, PCB and simulation work
Certification support

Idea to prototype

From concept to a validated prototype, ready for your team or manufacturer.

Requirements and architecture
Full design and bring-up
Test fixtures and test plans

Power convertersDC-DC, AC-DC and power supplies

Chargers & batteriesCharging, protection and battery safety

Motor & actuator drivesFaster, cooler, more efficient

Protection & sensingFault protection, HV voltage and current sensing

Electronics designSchematic, PCB and board consolidation

EMI, thermal & certificationFCC Part 15 and CISPR/EN 55032

Test equipmentCustom rigs, including high-current injection up to 54 kA

BOM cost reductionLower electronics cost without giving up performance; design for production

HP Poly Voyager Surround 85 — Poly Voyager Surround 85

Consumer electronics · NuCurrent

Systems Lead Power Electronics Engineer

End-to-end power electronics design for consumer products, including full-system simulation, schematic and PCB design, hardware validation, tolerance analysis, certification and BOM optimization.

Logitech G POWERPLAY 2WHOOP 4.0HP | Poly Voyager Surround 85EssilorLuxottica Nuance Audio

G&W CLiP current limiting protector — CLiP® redesign

Grid protection · G&W Electric

High-voltage protection, sensing and test

Redesigned the high-voltage sensing electronics for the CLiP® current-limiting protector, along with its 54 kA field tester. Fully validated the electronics and the complete system for the TEROS™ recloser.

Compensating for drift in a switchgear voltage sensor ↗US 11,994,544 B2 · granted May 28, 2024 · also filed in Canada Current-sensor-powered fault current limiter ↗US 2023/0344219 A1 · published patent application

Who you'll work with

Hi, I'm Juan

I'm the engineer teams call when a power problem won't go away. I've worked the full path from simulation to certified hardware, on consumer products and on 27 kV grid equipment. What I enjoy most is finding the root cause nobody else could find.

ExperienceSystems Lead at NuCurrent; New Product Development at G&W Electric

Patents1 granted US patent and 1 published application

EducationM.S. and B.S. Electrical Engineering, Illinois Tech, Magna Cum Laude

LanguagesEnglish and Spanish, working with teams across the US and Latin America

FAQ

Questions teams ask

Is the roadmap really free?

Yes. It's how I show you how I think before you spend anything. I limit how many I do each month so each one gets real engineering time.

Will you sign an NDA?

Yes. Send yours before the first call.

Who owns the work?

You do. Designs, files and IP created for your project belong to you once the work is paid for.

Do you work remotely?

Yes, with teams across the US and Latin America. Hardware can be shipped to me for bring-up and testing when needed.

How is pricing set?

Fixed price per milestone, agreed upfront in your roadmap. Team extension is a simple monthly rate.

Get started

Tell me what's in the way. I'll send the plan.

A few lines about your problem, team or idea is enough. You'll hear back within one business day.

Prefer email? juanfserrano16@gmail.com · Message on LinkedIn

Your hardest problem needs a power electronics expert