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.

• High accuracy: Maximum ±0.36° el up to 240000 e-rpm (electrical rpm)
• Immune to magnetic stray fields (ISO 11452-8)
• ISO 26262 ASIL C SEooC (Safety Element out of Context)
• High-speed inductive resolver operational up to 660000 e-rpm
• Differential sine and cosine analog outputs
• System propagation delay variation < ±120 ns
• Programmable linear transfer characteristic (16 points)
• 5V operating supply voltage
• Overvoltage and reverse-polarity protection: -24V to +24V maximum
• Ambient Operating Temperature Range from -40°C to 160°C
• Through-Shaft, End-of-Shaft and Side-of-Shaft operation
• TSSOP-16 Package RoHS Compliant

The MLX90510 (MLX90517) is an inductive position sensor IC used for absolute rotary motion/position sensing in safety critical automotive applications. Its main specifications benefit e-machine types of applications directly:

• Mechanical mounting position freedom while the coil system is printed on a PCB and can be easily adapted for different E-machine types.
• End-of-shaft, side-of-shaft and through-shaft operation.
• Improved cost structure of the PMSM and BLDC e-machine control systems in electrical powertrains for hybrid and battery electrical vehicles by implementing a cost-effective inductive high speed resolver.
• No expensive shielding required thanks to this inductive position sensor operating with high frequencies within a narrow frequency band well outside the switching frequency of the high power inverter.
• (MLX90510) innovative digital angle calculation with propagation delay compensation (system propagation delay <+/- 120 ns over full operating range).
• High accuracy < +/- 0.36° up to 240'000 electrical RPM over full operating range.
• Differential Sine and Cosine analog output independent from analog input voltage amplitude variations due to airgap variations.
• Magnetic stray field immune for DC and AC stray fields (ISO 11452-8).
• IC compliant to ISO26262 ASIL C (D), supporting system integration up to ASIL D rate.
• Ambient operating temperature range from -40°C to 160°C.
• Wide operating supply voltage range, including overvoltage and reverse-polarity protection: -24 V to +24 V.
• TSSOP-16 package RoHS compliant

The key requirements to ensure a competitive concept include:

• Scalable design for different motor designs and position sensor placements flexibility.
• System weight reduction.
  

An error in the signals synchronization would immediately lower the overall performances of the system if not leading to a safety issue. To ensure accurate and reliable operation the position sensor performance has the following characteristics:

• Reliable and accurate position sensing at mechanical speeds beyond 25’000 RP.
• Highly accurate position sensing.
• System integration up to ASIL D rate.