Melexis expands its range of qualified inductive resolvers for the automotive sector for electric motor applications (power steering, traction motor, brake booster). The MLX90517 complements the MLX90510 by providing raw signals to enable off-chip compensation in the ECU.
Melexis, a global microelectronic engineering company, adds the MLX90517 to its range of inductive resolver ICs. Through an external compensation algorithm, the MLX90517 guarantees accuracy better than ±0,36° at a maximum of 660.000 e-rpm without the need to program the IC.
The MLX90517 works in combination with a set of PCB based coils. Arrangements can be easily adapted depending on the number of pole pairs in the motor. Support for on-axis (at the end of the shaft) and off-axis (on the side of the shaft or through the shaft) sensing gives engineers options for implementing coils that enable reliable and accurate sensing within acute mechanical constraints . The three-phase coil design improves linearity by filtering out harmonics that would not be possible in two-coil systems.
“The MLX90510 and MLX90517 give engineers the freedom to choose between on-chip and off-chip compensation,” says Lorenzo Lugani, Melexis' product manager for inductive sensors.
The MLX90517 has been developed as an ASIL C SEooC (Safety Element Out of Context) in accordance with ISO 26262. It supports system integration up to ASIL D. The built-in protection against overvoltage and reverse polarity (±24 V on supply and ±18 V on the outputs) allows it to withstand the most demanding electrical environments. It is AEC-Q100 qualified and has an operating temperature range from -40°C to +160°C. This device is supplied in a TSSOP-16 package. Contact Melexis for pricing options and to request samples.
