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Precision-Driven Custom Electric Design

At Elfox, we specialize in a diverse set of engineering domains—ranging from embedded systems and power electronics to control algorithms and human-machine interfaces. Our multidisciplinary expertise allows us to build reliable, scalable, and production-ready electronic solutions that meet the unique requirements of each project. Whether it's a precision analog front end, a high-efficiency power converter, or a custom firmware stack, we focus on engineering that is both practical and forward-looking.

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Power Electronics

DC-DC converters, battery chargers, isolated power modules, motor drives, and power management circuits for embedded and industrial applications.

Embedded Systems

Microcontroller-based boards, sensor interfaces, communication modules, and control units. Suitable for automation, industrial monitoring, IoT, and custom device firmware development.

Precision Analogue

Low-noise signal conditioning, analog front-ends, sensor interfacing, mixed-signal circuits, and precision measurement systems. Ideal for instrumentation, test equipment and  medical electronics

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Stuck on an electronics design? We'll review it for free.

  • Schematics – design errors, logic, manufacturability

  • PCB Layout – signal integrity, power delivery, thermal issues

  • EMI/EMC – catch compliance issues early

Delivered projects

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1kW HF Solar Inverter

Ultra compact high frequency solar inverter with 1KW output.

  • 12V DC Input 230V 50Hz output

  • 95% efficiency

  • Inbuilt MPPT and AC charger

  • < 2 inches in height

400W LED Driver

Smart LED driver with 400W output.

  • 48V DC input, variable current output

  • > 99% efficiency @ full load

  • RS-485 communication

  • Flicker free dimming in 10K steps

CISPR-25 Certified DC-DC 
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Automotive DC DC converter rated 250W

  • 30V to 60V DC input

  • 13.5V 20A output

  • Short circuit protection

  • EMI/EMC as per CISPR-25 Class-5

1.2kW Multi-phase DC-DC

High efficiency 8 phase DC DC converter with 45 degree phase shift.

  • 40V to 60V DC input

  • Up to 50V 25A programmable output

  • 99.3% efficiency at full load

  • Fully digital FPGA based control

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10kW PMDC Motor Driver

Four quadrant PMDC motor driver control card for automotive application.

  • Constant torque control

  • Jerk-free transition from stand-still

  • Forward and reverse regeneration

  • Ripple free torque from 0 to full RPM​

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High Accuracy BMS

High accuracy battery management system for automotive and military use

  • 1mV typical accuracy

  • 100uV precision

  • 1.5kA current FSR with 3% accuracy

  • Built in solid-state relay up to 110A

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Cost Effective BMS

Entry level smart BMS with minimal prices

  • Cost effective

  • 5mV typical accuracy

  • Low operating current

  • Configurable parameters

  • Bluetooth and UART Communication

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Smart DC-DC Charger

300W smart DC DC charger with fully digital SoC based control

  • 20V to 60V DC input

  • programmable output voltage and current

  • Multiphse operation with extremely low ripple and EMI

  • SMBUS communication

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60kW Motor Driver

60KW four-quadrant PMDC motor driver

  • 60V to 120V input, 800A output

  • Compact liquid cooled thermal design

  • Fully digital torque and speed control

  • Part of automotive CVT system

Engagement Models

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Fixed-Scope Project Engagements

Structured development based on clearly defined requirements. Undertaken when the client provides a well-defined scope of work and deliverables. Suitable for end-to-end design 

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Feasibility Analysis & Prototyping

Exploratory engagements to validate technical concepts.

Intended to assess the viability of new product ideas or system architectures

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Retained Engineering Services

Ongoing technical support through a structured monthly arrangement.

Designed for clients who require consistent engineering assistance over time
 

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Technical Consulting & Design Review

Expert insights to support critical technical decisions.

Focused consulting engagements for reviewing existing designs, strategies, or systems

About Elfox

At Elfox, we specialize in a diverse set of engineering domains—ranging from embedded systems and power electronics to control algorithms and human-machine interfaces. Our multidisciplinary expertise allows us to build reliable, scalable, and production-ready electronic solutions that meet the unique requirements of each project. Whether it's a precision analog front end, a high-efficiency power converter, or a custom firmware stack, we focus on engineering that is both practical and forward-looking.

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Frequently asked questions

elfox

TECH LABS

Plot No 1, Pocket 27

Rohini Sector 24

Delhi 110085​

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