New Industry Products

3-Phase Bridge Driver with Integrated ARM® Cortex® M3

October 20, 2017 by Paul Shepard

Infineon has combined its wealth of experience in motor control drivers for automotive applications with all the benefits of an industry-standard core. The unique result is a third-generation embedded power IC based on ARM® Cortex®-M cores that addresses a wide range of smart 3-phase brushless dc motor control applications including, fuel pumps, HVAC fans, engine cooling fans, electrical water pumps, and so on.

Produced on Infineon's first-in-industry automotive qualified 130nm Smart Power technology, the Infineon Embedded Power System-on-Chip solutions offer an unmatched level integration and system cost to performance to optimization for the target application segments.

The TLE987x family offers scalability in terms of Flash memory sizes and MCU system clock frequency supporting a wide range of motor control algorithms, either sensor-based or sensor-less.

(click on Block Diagram to enlarge)

It uses the same MCU and peripherals as the TLE986x family, 2-Phase driver, enabling design synergies between dc and BLDC motor control applications.

The new Infineon® Embedded Power IC is supported by a complete development tool chain provided by Infineon and third party vendors. The tool chain includes compiler, debugger, evaluation board, LIN low level driver and configuration tool as well as example software code for motor control.

Application example (click on schematic to enlarge)

Features:

  • ARM® Cortex®-M3 MCU
  • System clock up to 40MHz
  • Up to 128kB Flash memory
  • 4K EEPROM emulation
  • NFET drivers with charge pump
  • Current programmable NFET driver with patented slope control for optimized EMC behavior
  • Integrated LIN transceiver compatible with LIN standard 2.2 and SAE J2602
  • Supports fast programming via LIN
  • Direct memory access (DMA)
  • 10-Bit SAR ADC for sensing
  • Timers for pwm signal generation for 3 -phase motor control
  • On chip oscillator & PLL

Benefits:

  • Complete system-on-chip for BLDC motor control
  • Minimum number of external components reduce BOM cost
  • Platform solution for a wide range of motor control algorithms
  • Supports sensor-less field-oriented control motor control algorithm
  • Simplifies EMC design based on slope programmable MOSFET driver
  • Intelligent power saving modes including stop and sleep mode, supports energy management (on demand)
  • PG-VQFN package with 7 x 7mm footprint enable PCB space saving
  • Reduce the motor size and weight
  • Single die solution improves module reliability

(click on table to enlarge)