Melexis

Inductive position sensor ICs

The MLX90510 is a high-speed inductive resolver IC used for absolute rotary motion/position sensing in safety critical automotive applications. Its main specifications benefit e-machine types of applications directly, and minimize the ECU effort required to get best-in-class accuracy under extreme mechanical and electrical conditions.

The MLX90510 is designed to control an inductive transducer, process the captured analog sensor signal and provide differential Sine and Cosine outputs. The inductive sensor operation is based on the inductive coupling between a transmitting coil, the target and three receiver coils.

With its innovative architecture, the MLX90510 brings several advantages:

• The system propagation delay is trimmed to 0ns with a maximum of +/-120ns residual variations over the entire operating temperature range.
• Input offset compensation and zero output-angle position adjustment are performed within the IC, lowering the effort on the ECU.
• The 3-phase based coil design simplifies linearity optimization.
• Decoupling between the input and output enables unprecedented EMC performances. It also ensures stable output amplitudes independently from the airgap related input signal strength.
• The linearization feature, with up to 16 calibration points, deals with the non-linearities of challenging sensor modes like side-of-shaft.

The MLX90510 has been developed as a SEooC (Safety Element out of Context) according to ISO 26262 and supports safety related system implementations up to ASIL C.

For mass-production programming., the MLX90510 is compatible with the PTC-04 (DB-HALL06, v3 or higher)

Applications:

• High speed absolute rotary position sensor
• Motor position sensing (BLDC, PMSM, PMSR)
• Traction motor
• E-brake booster

Electric Power Steering (EPS)