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On-Board Chargers (OBC) for Electric Vehicles

High-performance magnetic components for automotive OBC applications.
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On-Board Chargers (OBC) for Electric Vehicles

An On-Board Charger (OBC) is a crucial component in electric
(EV)
and plug-in hybrid vehicles (PHEVs). It converts AC power
from the grid
into regulated DC power to charge the vehicle’s
battery safely and efficiently.

To meet the increasing demands for higher power density, efficiency, and reliability in compact designs, PREMO provides a range of advanced electromagnetic components tailored for OBC applications.

ON BOARD CHARGER (OBC)

Auxiliary Transformer
Power Inductors
Power Transformers
Planar Magnetics

Auxiliary Transformer

PLC Transformers

PLC Transformers

Flyback Transformers

Flyback Transformers

Current Sensing Transformer

Current Sensing Transformer

Gate Drive Transformers

Gate Drive Transformers

Power Inductors

Common Mode Chokes

Common Mode Chokes

PFC Inductors

PFC Inductors

DC Filtering Inductors

DC Filtering Inductors

Resonant Inductors

Resonant Inductors

Power Transformers

OBC Transformers

OBC Transformers

DCDC Transformers

DCDC Transformers

Wireless Charging Coil

Wireless Charging Coil

Planar Magnetics

Planar Magnetics

Planar Magnetics

🔌 PREMO Magnetic Components in On-Board Charger (OBC) Systems

🔌 PREMO Magnetic Components in On-Board Charger (OBC) Systems

On-board chargers (OBC) play a crucial role in electric vehicle (EV) systems by managing the AC-to-DC power conversion needed to charge the battery efficiently and safely. At PREMO Group, we provide high-performance magnetic components tailored for each stage of the OBC system, ensuring optimal efficiency, safety, and electromagnetic compliance.

To the right is a breakdown of how PREMO components integrate into the main functional blocks of OBC systems:

AC Input & EMI Filtering

Purpose: Suppresses electromagnetic interference (EMI) for safer, cleaner power
intake.

Components:

Common Mode Chokes: Reduce high-frequency noise

Example: CMCF0R9-16V (PREMO)

Differential Mode Chokes: Target line-to-line noise

Example: DMCMCF1R3-25H (PREMO)

Power Factor Correction (PFC)

Purpose: Enhances power quality by reducing harmonics and improving efficiency.

Components:

PFC Chokes: Vital for energy-efficient boost converters

Example: PFCA500-8H (PREMO)

DC-DC Converter (Isolated)

Purpose:
Converts voltage levels while maintaining galvanic isolation.

Components:

High-Frequency Transformers for isolation and conversion

Example: BC3.5LFB1.4

Resonant Inductors for LLC resonant converter efficiency

Example: RINDLS6R3-30T

DC Output Filtering

Purpose:
Ensures clean, stable DC output by minimizing ripple and high-frequency
noise.

Components:

Output Chokes to filter and smooth the DC line

Purpose: Ensures clean,
stable DC output by minimizing ripple and high-frequency noise.

Components:

Output Chokes to filter and smooth the DC line

Why Premo? A Technical Advantage in OBC Design

Why Premo? A Technical Advantage in OBC Design

  • High-Frequency Expertise: Premo’s components are engineered for modern high-frequency (>150 kHz) power electronics, reducing size and weight while increasing efficiency.
  • Thermal Performance: Specialized materials and designs to handle high-power density systems with ambient temperatures exceeding 150°C.
  • Compliance Assurance: All components meet automotive standards (AEC-Q200, IATF 16949) and EMI/EMC requirements, ensuring system reliability and regulatory compliance.
  • Global Engineering Support: Technical assistance and design customization to optimize OBC performance and integration.
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