SMPS Design Engineer UPS Power Conversion Systems

Job Title: SMPS Design Engineer UPS / Power Conversion Systems

• Design, develop, and validate

  Switched Mode Power Supply (SMPS)

  circuits and

  power conversion stages

  for

  UPS and energy conversion systems

  , covering a range of topologies such as

  Flyback, Forward, Half/Full Bridge, LLC, Phase-Shifted Full Bridge, and PFC/Vienna Rectifier.

• Execute

  power estimation, sizing, and loss calculation

  for rectifier, charger, DC-DC, and inverter sections based on system requirements, load profile, and thermal constraints.
• Perform

  detailed power stage design calculations

  including magnetic design, semiconductor device selection, snubber networks, and thermal design ensuring high efficiency and reliability for required power ratings.
• Develop and verify

  AC-DC, DC-DC, and DC-AC converter topologies

  used in

  single-phase and three-phase UPS systems

  , with focus on scalability, efficiency, and protection features.
• Select components (MOSFETs, IGBTs, SiC/GaN devices, magnetics, capacitors, etc.) considering

  efficiency, derating, thermal performance, and cost trade-offs.

• Design

  control and feedback loops

  using analog and digital PWM controllers (e.g.,

  UC384x, TL431, UCC28019, UCC3895

  , or

  DSP/MCU-based control platforms

  ).
• Conduct

  board bring-up, hardware testing, and debugging

  using oscilloscopes, current probes, and power analyzers to validate converter performance under real load conditions.
• Ensure compliance with

  EMI/EMC, safety, and reliability standards

  applicable to industrial and commercial UPS systems.
• Collaborate closely with

  firmware, mechanical, and PCB layout teams

  to ensure seamless integration of power and control sections.
• Create and maintain

  design documentation, validation reports, test plans, and power estimation spreadsheets.

• Lead

  design reviews, root-cause analysis, and continuous design optimisation

  to improve product performance and manufacturability.
• Contribute to

  system-level architecture definition

  , translating UPS performance specifications into

  power design requirements and topology selection.

Technical Skills Required:

• Strong hands-on experience in

  SMPS and power converter design (50 W5 kW)

  for

  UPS, inverter, and charger applications.

• Deep understanding of

  UPS power architecture

  including charger, rectifier, DC link, inverter, and static bypass sections.
• Proficiency in

  isolated and non-isolated converter topologies

  , including

  LLC resonant, interleaved PFC, and 3-phase PWM rectifiers.

• Expertise in

  gate driver design

  ,

  magnetics design

  , and

  loop compensation

  for stable control.
• Familiarity with

  power semiconductor technologies

  (Si, SiC, GaN) and their associated gate driver requirements.
• Experience using

  simulation and design tools

  such as

  PSIM, LTspice, PLECS, and MATLAB Simulink

  for loss, thermal, and control analysis.
• Strong knowledge of

  power estimation, thermal modelling, and derating practices

  for reliable operation.
• Working knowledge of

  safety and EMI/EMC compliance standards

  (IEC/EN 61000, CISPR, UL).
• Hands-on proficiency with

  test and validation equipment

  : DSO, power analyser, LCR meter, spectrum analyser, and thermal camera.

Preferred Qualifications:

• Bachelors/Masters degree in

  Power Electronics / Electrical / Electronic Engineering.

• Proven experience in

  industrial UPS, inverter, or charger product design and validation.

• Familiarity with

  digital control

  of power converters using

  DSPs or MCUs (TI C2000, STM32, etc.)

  .
• Knowledge of

  PCB layout design

  for high-power circuits, including

  creepage, clearance, and thermal design rules.

• Exposure to

  SiC/GaN-based topologies

  and

  modular UPS architectures

  for high-efficiency systems.
• Experience with

  system-level power estimation, load behaviour analysis, and performance optimisation.

Soft Skills:

• Strong analytical and

  debugging ability

  with attention to detail.
• Capable of working

  independently

  from concept through prototype validation.
• Effective in

  cross-functional collaboration

  with firmware, thermal, and system teams.
• Excellent

  documentation, communication, and presentation

  skills.
• Self-driven approach with a focus on

  continuous improvement and product reliability.