New Embedded Power Series For Automotive Applications

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For compact & cost effective motor solutions in automotive applications such as sunroof, window lift, gate lift and pumps

Infineon Technologies is launching a new family of Embedded Power ICs. The TLE985x series provides highly integrated, AEC Q-100 qualified H-bridge driver motor control solutions for 2-phase DC and single-phase brushless DC motors. It will support automotive customers in replacing relays in low-end motor control.

By switching from relays to MOSFETs, the higher level of integration reduces system costs. Additional advantages are that the PWM control and the integrated current sense amplifier, which is calibrated, allow the motor currents to be adapted and thus the mechanics and motor to be optimized towards the application requirements. The circuit board and the motor become smaller. At the same time, the noise behavior improves.

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Two integrated measurement units (analog-to-digital converters) for monitoring temperature, battery voltage and four monitoring inputs help to save pins. These inputs can be operated directly with battery voltage, which saves costs on additional components such as external voltage dividers or shutdown transistors.

The control algorithm is able to compensate MOSFET parameter spread in the system by automatically adjusting the gate current according to required switching times. This allows an optimization of the system concerning EME (electro-magnetic emissions, slow slew rates) as well as power dissipation (short dead times) simultaneously.

In addition, different numbers of half-bridge drivers for uni- or bidirectional DC motor applications are offered.

Key Features

  • 32-bit Arm® Cortex®-M0 processor
  • Up to 48 – 96kB Flash memory
  • Temperature ranges (Tj up to 175°C)
  • Integrated current sense amplifier
  • 2 full duplex serial interfaces (UART) with LIN support
  • Adaptive MOSFET driver
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All TLE985x products are based on the same hardware and software platform as Infineon’s other Embedded Power products (TLE984x, TLE986x and TLE987x), thus enabling design synergies and allowing customers to reuse parts of the software. The devices come in a leadless VQFN package with a footprint of 7×7 mm.

Availability

Samples of the TLE985x devices will be available from March 2019 onward.

More information is available at www.infineon.com/tle985x

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