On-board charging (OBC)

Our on-board charging solutions provide highly efficient power conversion, high power density, and reliability for electric vehicles (EV)

nobutton

Overview

Transform your designs with complete and complementing chipsets to develop modular and scalable on-board battery chargers (OBC). Leveraging our expertise in power electronics and semiconductors, our OBC solutions use Si, SiC, and GaN power technologies to meet automotive quality and safety standards. Wide band gap chips enable future trends like V2L, V2H, and V2G. Scalable full system solutions speed time-to-market and bring full optimization.

Benefits

  • Scalable power technology portfolio
  • Power packages for all requirements
  • Full optimized system offering
  • Complementary, optimized chipsets
  • Full support for future trends
  • Performance, cost, fusion solutions
  • Safety support up-to ASIL-D
  • Full X-in-1 system support
  • Easy adoption for all topologies

Block diagram

About

Stay charged and ready to go with our on-board charging (OBC)

The EV on-board charger (OBC) recharges the high-voltage (HV) main battery from AC grids while the car is parked. Longer driving ranges of plug-in hybrid electric vehicles (PHEV) and battery electric vehicles (BEV) are achieved by increasing the battery capacities and energy efficiencies of electric components. Typical development targets are efficient power conversion for 400 V and 800 V systems, power density, reliability, and bi-directional (instead of unidirectional) power flow to enable future use cases (V2L, V2H, and V2G). The battery voltage classes used tend to be standardized at approximately 450 V, with a trend towards higher voltages as this supports faster charging times and lighter cabling within the vehicle.

Rigorously tested to ensure high efficiency and power density at a low system cost, Infineon's discrete high-voltage components are widely used for on-board charging applications, as price pressures increasingly displace module-based solutions. Additionally, our efficient three-phase charger solutions support the new design trend towards fast charging, from 11 kW or even up to 22 kW charging.

Optimize EV battery management with our on-board charging technology

We continuously innovate our product solutions for the electric vehicle (EV) market, ensuring that our customers can achieve their desired driving ranges with maximum energy efficiency. Explore some of Infineon's electric vehicle on-board charger system benefits below.

  • Scalable power technology portfolio
  • Power packages for all requirements
  • Full optimized system offering
  • Complementary, optimized chipsets
  • Full support for future trends
  • Performance, cost, fusion solutions
  • Safety support up-to ASIL-D
  • Full X-in-1 system support
  • Easy adoption for all topologies
  • Fully automotive-qualified product portfolio
  • Supports a wide range of conversion topologies
  • Compact design with highest power density
  • Very low switching losses at high switching frequencies
  • Isolation integrated in gate drivers and digital isolators
  • High-performance 32-bit microcontrollers
PFC stage and DC-DC converter (HV-HV) for on-board charging (OBC)

A typical OBC application consists of a PFC and a HV-HV DC-DC stage.

PFC stage:

  • Small and efficient EMC filter
  • High efficiency PFC correction
  • Accurate DC link voltage regulation
  • Wide support for topologies: B6/B8, Totem Pole, Matrix, etc.

HV-HV DC-DC converter:

  • Wide range output voltage regulation
  • Accurate charge current control
  • Reinforced galvanic isolation
  • EMC output filter
  • Various topologies (C)LLC, ZVS PS FB, DAB, other future variants
  • Flexible configuration with eFuse solutions
Boost your on-board charging with our connectivity solutions

Infineon offers innovative and reliable charging connectivity solutions that facilitate the efficient distribution of electricity between power grids and electric vehicles. We enable ISO 15118 solutions with our products, utilizing TPM modules in combination with AURIX™ microcontrollers for secure communication. Our Wi-Fi/Bluetooth® module supplements powerline communication, allowing for data storage and updates. Infineon's CAN transceivers provide connections to vehicle networks, making it easier for customers to develop charging solutions that meet their ISO 15118-defined requirements and beyond. By offering these solutions, Infineon is positioning itself as a leader in on-board charging connectivity solutions.

Charging connectivity
Innovative NACS-compatible charging interface solutions

Infineon offers innovative and reliable charging interface solutions that support both NACS (Non-Automotive Charge System) and CCS (Combined Charging System) communication standards. Our expertise in power electronics and semiconductor technology ensures that our solutions are efficient, reliable, and secure, meeting the highest quality and safety standards for automotive applications. While NACS and CCS are not compatible with each other, enabling vehicles to support both standards requires additional efforts. Identifying the connected charger with either DC or AC power, a switch typically routes the power directly to the main battery in case of DC power or, in case of AC power, to the on-board battery charger (OBC). Infineon provides dedicated semiconductor solutions for these routing switches.

Stay charged and ready to go with our on-board charging (OBC)

The EV on-board charger (OBC) recharges the high-voltage (HV) main battery from AC grids while the car is parked. Longer driving ranges of plug-in hybrid electric vehicles (PHEV) and battery electric vehicles (BEV) are achieved by increasing the battery capacities and energy efficiencies of electric components. Typical development targets are efficient power conversion for 400 V and 800 V systems, power density, reliability, and bi-directional (instead of unidirectional) power flow to enable future use cases (V2L, V2H, and V2G). The battery voltage classes used tend to be standardized at approximately 450 V, with a trend towards higher voltages as this supports faster charging times and lighter cabling within the vehicle.

Rigorously tested to ensure high efficiency and power density at a low system cost, Infineon's discrete high-voltage components are widely used for on-board charging applications, as price pressures increasingly displace module-based solutions. Additionally, our efficient three-phase charger solutions support the new design trend towards fast charging, from 11 kW or even up to 22 kW charging.

Optimize EV battery management with our on-board charging technology

We continuously innovate our product solutions for the electric vehicle (EV) market, ensuring that our customers can achieve their desired driving ranges with maximum energy efficiency. Explore some of Infineon's electric vehicle on-board charger system benefits below.

  • Scalable power technology portfolio
  • Power packages for all requirements
  • Full optimized system offering
  • Complementary, optimized chipsets
  • Full support for future trends
  • Performance, cost, fusion solutions
  • Safety support up-to ASIL-D
  • Full X-in-1 system support
  • Easy adoption for all topologies
  • Fully automotive-qualified product portfolio
  • Supports a wide range of conversion topologies
  • Compact design with highest power density
  • Very low switching losses at high switching frequencies
  • Isolation integrated in gate drivers and digital isolators
  • High-performance 32-bit microcontrollers

PFC stage and DC-DC converter (HV-HV) for on-board charging (OBC)

A typical OBC application consists of a PFC and a HV-HV DC-DC stage.

PFC stage:

  • Small and efficient EMC filter
  • High efficiency PFC correction
  • Accurate DC link voltage regulation
  • Wide support for topologies: B6/B8, Totem Pole, Matrix, etc.

HV-HV DC-DC converter:

  • Wide range output voltage regulation
  • Accurate charge current control
  • Reinforced galvanic isolation
  • EMC output filter
  • Various topologies (C)LLC, ZVS PS FB, DAB, other future variants
  • Flexible configuration with eFuse solutions

Boost your on-board charging with our connectivity solutions

Infineon offers innovative and reliable charging connectivity solutions that facilitate the efficient distribution of electricity between power grids and electric vehicles. We enable ISO 15118 solutions with our products, utilizing TPM modules in combination with AURIX™ microcontrollers for secure communication. Our Wi-Fi/Bluetooth® module supplements powerline communication, allowing for data storage and updates. Infineon's CAN transceivers provide connections to vehicle networks, making it easier for customers to develop charging solutions that meet their ISO 15118-defined requirements and beyond. By offering these solutions, Infineon is positioning itself as a leader in on-board charging connectivity solutions.

Charging connectivity

Innovative NACS-compatible charging interface solutions

Infineon offers innovative and reliable charging interface solutions that support both NACS (Non-Automotive Charge System) and CCS (Combined Charging System) communication standards. Our expertise in power electronics and semiconductor technology ensures that our solutions are efficient, reliable, and secure, meeting the highest quality and safety standards for automotive applications. While NACS and CCS are not compatible with each other, enabling vehicles to support both standards requires additional efforts. Identifying the connected charger with either DC or AC power, a switch typically routes the power directly to the main battery in case of DC power or, in case of AC power, to the on-board battery charger (OBC). Infineon provides dedicated semiconductor solutions for these routing switches.

Documents

Documents

Design resources

Partner solutions

Developer community