New Integrated On-Board Charger with Advanced Control, and Thermal Management for Electric Vehicles

Published  June 12, 2024   0
S Staff
 On-Board Charger (OBC) Solution

Microchip Technology has developed an On-Board Charger (OBC) solution for electric vehicles that integrates a variety of automotive-approved digital, analog, connectivity, and power devices. This solution includes the dsPIC33C Digital Signal Controller (DSC), the MCP14C1 isolated SiC gate driver, and mSiC™ MOSFETs in a D2PAK-7L XL package. The OBC solution aims to improve efficiency and reliability. The dsPIC33 DSC provides advanced control features, while the MCP14C1 gate driver offers high-voltage isolation and noise protection. The mSiC MOSFETs reduce switching losses and improve thermal management. The solution also includes technologies for communication interfaces, security, sensors, memory, and timing.

Microchip offers software modules for Power Factor Correction (PFC), DC-DC conversion, communication, and diagnostic algorithms to support system development. These modules are designed to optimize performance, efficiency, and reliability, and can be customized for specific original equipment manufacturer (OEM) needs. Key components of this OBC solution include the dsPIC33C DSC, which is AEC-Q100 qualified. It features a high-performance DSP core, high-resolution Pulse-Width Modulation (PWM) modules, high-speed Analog-to-Digital Converters (ADCs), and support for the AUTOSAR® ecosystem.

 The MCP14C1 isolated SiC gate driver, also AEC-Q100 qualified, comes in SOIC-8 wide-body (for reinforced isolation) and narrow-body (for basic isolation) packages. It is designed to drive mSiC MOSFETs with Undervoltage Lockout (UVLO) and uses capacitive isolation technology for noise immunity and high Common-Mode Transient Immunity (CMTI). The mSiC MOSFET, in an AEC-Q101-qualified D2PAK-7L XL surface mount package, includes five parallel source sense leads to reduce switching losses, increase current capability, and decrease inductance. It supports 400V and 800V battery voltages.