First embedded gate driver powering efficiency in EV thermal systems

TDK Corporation has extended the power capability of its Micronas HVC 5x embedded motor controller family with the new HVC 5481G for automotive applications. The device is a programmable gate driver SoC for control of an external power bridge with six N-channel FETs to drive actuators, fans, and pumps.

The SoC is compatible with the existing HVC 5x family software, integrating an ARM Cortex-M3 CPU with 64KB flash memory and 8KB SRAM. It operates directly from the 12V automotive supply rail and integrates a LIN transceiver for communication. The IC supports various motor control algorithms from sensor-less six-step commutation using BEMF detection to single shunt FOC. The device includes seven general-purpose IO pins, internal timers, and capture compare registers, enabling seamless interfacing with the Micronas Hall-effect or TDK TMR sensors.

Available in a compact 5mm x 5mm PQFN32 package and certified according to AEC-Q100 Grade 1 automotive standards, the device provides a reliable and efficient solution for medium-power BLDC applications. Its robust design and advanced features make it the device of choice for automotive and industrial applications, assuring high performance and adaptability.

Main applications include automotive blowers, pumps and fans, LIN based seat movers, smart higher power actuators for doors and lift-gates.