– Buck
– Boost
– Inverting buck-boost
– Cuk
– SEPIC
Power Electronics
Power Electronics Design Services:
From Concept to Production-Ready Solutions
SiC and GaN promise higher efficiency and power density but only when firmware, layout, thermal, and EMC are engineered as one system. Get any of it wrong, and you face field failures and certification delays.
Promwad closes that gap. With 22+ years in electronics design and 100+ engineers, we own the full stack — hardware, embedded software, and industrial design — for low- to high-voltage MOSFET, IGBT, SiC, and GaN transistor technologies.
Why Promwad
Your power electronics company for complex hardware-software integration
Solutions We Develop
End-to-end design for the full range of power conversion and management products:
Converters & inverters
— Power electronics converters (DC/DC, AC/DC, AC/AC, DC/AC)
— Modular multi-level converters
— Neutral point clamped inverter (NPC)
— Voltage source inverters (VSI)
Power supplies & backup power
— Power supply units (PSU)
— Switched-mode power supplies (SMPS)
— Uninterruptible power supplies (UPS)
— Automatic and static transfer switches
— Power electronics-based lighting solutions (e.g. LED drivers)
Motor drives & e-mobility
— Motor controls
— Traction inverter modules
— Charging units
Energy storage & battery management
— Energy storage systems (ESS)
— Battery management systems (BMS)
Grid, power quality & distribution
— Power factor correction
— Active filters and compensators
— Reactive power compensation systems
— High-voltage DC (HVDC) transmission systems
— Power distribution systems
Talk to the engineers who'll design it
No sales gatekeeping. Book a 30-minute call with a power electronics engineer to pressure-test your concept, topology, and targets.
Our Power Electronics Design Services
DSP and firmware development
Our engineers are highly skilled in digital signal processing (DSP) techniques and develop custom firmware for power electronics converters and other devices. We optimise parameters such as dead time and pulse-width modulation (PWM) to ensure precise control and optimal performance for your solutions.
FPGA design
We design power electronics control and signal processing solutions, implementing algorithms for PWM, feedback control loops, and precise regulation. Incorporating fault detection mechanisms at the hardware level, we ensure real-time response and protection against system anomalies.
PCB design simulation
Our team uses tools like Altium Designer and Siemens PADS Professional to design and simulate printed circuit boards (PCBs). We implement controlled impedance routing, thermal vias, and layout partitioning to optimise power distribution and enhance thermal management capabilities.
Thermal simulation
Using power electronics simulation software, we assess heat dissipation, considering factors such as conduction, convection, and radiation. Our team can optimise heatsink designs, component placement, and airflow paths, ensuring reliable operation under varying load conditions and environmental temperatures.
Schematic design simulation
As a power electronics company, we use industry-leading simulation tools such as SPICE and PLECS. Our team can analyse and optimise power electronics schematics, validating key parameters, including voltage/current waveforms, transient responses, and component stress levels.
Thermal, mechanical, and EMC testing
Our testing protocols include thermal cycling, vibration testing, and electromagnetic compatibility (EMC) testing using equipment that is compliant with standards such as IEC 61800-3 and the EN 61000 series. We also ensure compliance with regulatory requirements and reliability in harsh operating environments.
Application Areas
We design power electronics for the industries where reliability and efficiency are non-negotiable:
Automotive & e-mobility
traction inverters, onboard chargers, BMS, DC/DC converters.
Telecom
high-efficiency rectifiers, SMPS, and power distribution for network infrastructure.
Industrial & robotics
motor controls, drives, and ruggedized supplies for harsh environments.
Railway
traction and auxiliary converters built to transport-grade standards.
Power engineering
HVDC, MMC, energy storage systems, and grid-tied converters.
Building automation
LED drivers, UPS, and efficient power management.
Don't see your exact application?
Most of our work starts with a non-standard requirement. Bring us the hard part — we'll tell you if it's feasible and how we'd build it.
Key Transformation: Migrating to Wide-Bandgap (SiC & GaN)
Switching from legacy silicon (Si) to wide-bandgap devices — SiC and GaN — is the single biggest lever for power density and efficiency. But migration is rarely a drop-in: faster switching exposes parasitics, gate drive becomes critical, EMC behavior changes, and thermal management has to be rethought.
How we de-risk it. Promwad engineers the transition as a system considering the following components:
Our Case Studies
Bring us the spec that's been stuck.
The topology you can't close, the efficiency you can't reach, the EMC you keep failing. That's the conversation we want.
How We Ensure Quality
Quality in power electronics is engineered in, then proven on the bench.
Simulation-first design
We validate before we build — SPICE, PLECS, LTspice, PSpice, Qspice, and Simulink for schematic, thermal, and transient analysis.
Design for compliance
EMC and reliability are designed in from the start, then verified with thermal cycling, vibration testing, and EMC testing against IEC 61800-3 and the EN 61000 series.
In-house lab validation
Every design is characterized on calibrated equipment — high-speed oscilloscopes, spectrum analysers, and signal generators.
Reliability in harsh environments
We ensure regulatory compliance and dependable operation under real-world load and temperature conditions.
Topologies & Techniques We Support
Basic Converters
Intermediate Converters
Advanced Systems
Special Techniques
Our Tech Stack in Power Electronics Design
CAD software
Altium Designer, Siemens PADS Professional
Simulation tools
LTspice, PSpice, Simulink, Qspice
Transistors and semiconductor devices
MOSFETs, IGBTs, GaN, SiC
Firmware development
C, C++, Rust, Verilog, VHDL
FPGA
AMD, Lattice, Microchip, Intel
DSP
TI: TMS320 series, Infineon: XMC, AURIX
Testing and measurement equipment
Oscilloscopes, multimeters, function generators, spectrum analysers, system power supplies
Typical operating frequencies (part 1)
– 50 kHz to 120 kHz / UPS boost / buck
– 80 kHz to 160 kHz / PFC + boost AC/DC – rectifier / single / multi-phase interleaved
– 120 kHz to 240 kHz / DC/DC (isolated) AC/DC – rectifier / H-bridge / full-bridge / FB-ZVS
Typical operating frequencies (part 2)
– 200 kHz to 1000 kHz / DC/DC (non-isolated) DPA-Enterprise / single-phase buck / multi-phase interleaved
– 1 MHz to 4 MHz / DC/DC (non-isolated) DPA / bricks / single-phase buck / multi-phase interleaved
– 10 kHz to 35 kHz / motor control / 3-phase inverter
Libraries
Infineon
SMPS Designer — simulation tool for electronic power supply design, IPOSIM — power electronics simulation software, AURIX, MOTIX, Power MOSFET, ModusToolbox, power management ICs (PMIC), PowIRCenter
Texas Instruments (TI)
IGBT gate driver libraries, PowerLab reference design library, WEBENCH Power Designer, SwitcherPro, power system management, (PSM) library, PMIC libraries
Power factor correction (PFC)
3-phase active PFC rectifier | Boost-type PFC rectifier | 3-phase diode bridge rectifier | Vienna rectifier | Vienna rectifier demonstrator | 6-switch boost PFC rectifier (active boost) | 6-switch buck PFC rectifier (active buck) |
6-switch buck PFC rectifier demonstrator | Integrated active filter (IAF) PFC rectifier | IAF rectifier demonstrator | Swiss rectifier | Swiss rectifier demonstrator | ⅓ PWM boost & buck PFC rectifier | ⅓ Isolated Vienna rectifier | ⅔ PWM buck & boost current source rectifier | Trident rectifier | Y-rectifier | Y-inverter demonstrator | Boost-buck-type PFC | Buck-boost-type PFC
Power Electronics Algorithms
Maximum power point tracking (MPPT) | 3P3Z, 2P2Z, and PID controllers | Fuzzy logic control (FLC) | Sliding mode control (SMC) | Model predictive control (MPC) | Hysteresis control | State-space control | Adaptive control
Trusted by Tech Leaders
Choose How You Work with Us
Flexible cooperation formats to fit your business goals and project maturity
Time & Material
Perfect for evolving projects. You control the budget and milestones, while we ensure transparency and fast team scaling.
Dedicated Team
Your long-term engineering capacity — a self-managed, domain-focused team integrated into your workflow for steady, predictable delivery.
Fixed Price
Ideal for well-defined tasks with clear outcomes. Scope, budget, and timelines are set upfront to guarantee predictable results.
Ready to power up?
Let's build a high-performance solution!
FAQ
What power electronics design services does Promwad offer?
We provide end-to-end services across low-, medium-, and high-voltage applications, including schematic and PCB design, DSP and firmware development, FPGA design, thermal and EMC simulation, and full thermal, mechanical, and EMC testing, from concept to production.
Do you design with SiC and GaN, or only silicon?
Both. We work with MOSFETs, IGBTs, SiC, and GaN, and we specialize in migrating products from legacy silicon to wide-bandgap devices for higher efficiency and power density.
Which industries do you serve?
We serve automotive and e-mobility, telecom, industrial and robotics, railway, power engineering, and building automation.
Can you join an existing project mid-stream?
Yes, we can join at any stage or take full ownership, including management and risk control.