Overview

Description

As electric vehicles (EVs) and hybrid electric vehicles (HEVs) gain popularity, there's a growing demand for efficient energy management and dual-voltage systems to transfer energy between 12V and 48V power nets. This design is ideal for 48V mild hybrid electric vehicles (MHEV) and electric motorcycles, featuring highly efficient 12V/48V DC/DC converters. It reduces PCB area by 46% using Gallium Nitride (GaN) High-Electron-Mobility Transistors (HEMTs) with excellent switching characteristics, enabling high efficiency power conversion at a 500kHz switching frequency with small 1.3µH inductors.

System Benefits​:

  • Bi-directional analog controller eliminates the need for DSP with complicated firmware, separate buck/boost controllers, and complex switching logic, reducing development time, BOM, and costs.
  • Supports ASIL B automotive safety standard under ISO26262 with Renesas MCU and regulator.
  • Automatic phase drop function achieves over 94% power efficiency across a wide load range (400W to 3kW).
  • Adaptive dead time function automatically adjusts for optimal control.
  • MCU supports mode setting and status monitoring of DC/DC converters via CAN FD.

Comparison

Applications

Applications

  • Low voltage mild hybrid and pure EVs
  • Traction motor controller systems

Winning Combinations Interactive Diagram

Select a block to discover products for your design

AS-249 AS249 AS249 AS249 Sheet.127 Tri component Component block.745 Component block.631 Component block.77 11pt text 11pt text Tri component.123 Component block.745 Component block.631 Component block.77 11pt text 11pt text 12V Battery 12V Battery 12V Battery 12V Battery 12V Battery 12V Battery 12V Battery 12V Battery GaN 1 GaN GaN Half-Bridge Driver Half-Bridge Driver Half-BridgeDriver GaN 2 GaN GaN Inductor Coreless (Air conductor) Sheet.139 Sheet.140 Sheet.141 Sheet.142 Sheet.143 Sheet.144 Sheet.145 Sheet.146 Sheet.147 Bidirectional PWM Controller Bidirectional PWM Controller Bidirectional PWMController MCU MCU MCU 48V Battery 48V Battery 48V Battery 48V Battery 48V Battery 48V Battery 48V Battery 48V Battery CAN/CANFD Transceiver CAN/CANFD Transceiver CAN/CANFDTransceiver Connector Arrow Connector Arrow.161 Connector double arrow Connector Arrow.163 Connector double arrow.164 Connector Line.166 Connector Arrow.167 Connector Arrow.168 Connector Arrow.169 Connector Line Connector Line.173 Connector Line.174 Connector Line.176 Connector 1 Connector 1.179 Phase 2 Phase 2 Phase 2 Phase 1 Phase 1 Phase 1 Phase 3 Phase 3 Phase 3 Phase 4 Phase 4 Phase 4 Phase 5 Phase 5 Phase 5 Phase 6 Phase 6 Phase 6 Can CAN CAN UART UART UART 5V 5V 5V PMBus PMBus PMBus I2C I2C I2C Demo Board Demo Board Demo Board PWM PWM PWM
Exiting Interactive Block Diagram