SiC Charger Efficiency Breakthroughs + New Design Tools

FEATURED — NEW ENGINEERING CASE STUDIES

CASE STUDY 1 — 3.3 kW SiC On-Board Charger

"Designing a Compact 3.3 kW On-Board Charger Using SiC MOSFETs for a Two-Wheeler EV Platform"

94.8% peak system efficiency

40% reduction in form factor vs IGBT

Zero thermal failures in 6 months of field testing.

CASE STUDY 2 — 22 kW Bidirectional DC-DC Retrofit

"Retrofitting a 22 kW Bidirectional DC-DC Converter from IGBT to SiC: +3.8% Efficiency"

Peak efficiency: 92.3% → 96.1%

Junction temperature at full load: 127°C → 77°C (−50°C)

Shifted from active forced-air to passive natural convection.

CASE STUDY 3 — Magnetics Design Optimization

"LLC Resonant Transformer Redesign: 30% Core Volume Reduction"

Transformer core volume: −30%

Leakage inductance variation: ±20% → ±3%

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TOOL LAUNCH — FREE LLC RESONANT CONVERTER CALCULATOR

We are excited to announce the launch of our LLC Resonant Converter Design Calculator — a free, open-access tool for power electronics engineers.

What it does:

Calculates resonant tank parameters (Lr, Cr, Lm)

Provides transformer turns ratio and gain curves

Exports results as a downloadable PDF report

[Try the LLC Calculator →](/engineering-tools/llc-resonant-calculator)

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TECHNICAL INSIGHT — WHY 96%+ EFFICIENCY MATTERS AT SCALE

3–4% efficiency improvement sounds incremental. But for a fleet of 10,000 vehicles, a gain from 91.5% to 95.8% efficiency results in:

Annual energy saving: 589,755 kWh

Annual cost saving: ₹41.3 lakhs

CO₂ reduction: 483,799 kg — equivalent to removing 105 cars from the road.

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INDIA EV CHARGING STANDARDS — DECEMBER 2024 UPDATE

AIS-138 PART 3 — WIRELESS CHARGING STANDARD PUBLISHED ARAI has published the final version covering wireless (inductive) charging systems up to 11 kW at 85 kHz.

BIS CERTIFICATION TIMELINE IMPROVEMENTS The IS 17017 certification process has been streamlined from 8–12 months down to 5–8 months.

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LOOKING AHEAD — EDRIFT ELECTRIC ROADMAP 2025

Q1 2025: 6.6 kW Bidirectional OBC with V2H capability.

Q2 2025: 60 kW Modular DC Fast Charger (Liquid-cooled).

Q3 2025: GaN-based Portable Charger (1.5 kW, <800g).