Monolithic Power Systems Inc. TBMA302-Q-RD-01A

Overview

TBMA302-Q-RD-01A from Monolithic Power Systems is a long-format (LT) evaluation board designed specifically for the MA302 MagAlpha magnetic position sensor. It supports both side-shaft and end-of-shaft mounting configurations, provides SPI interface access via two 8-pin 2.54 mm headers (CN1/CN2), and integrates decoupling capacitors (1 µF ×2, 100 nF ×1) and test points for rapid functional validation in motor control and encoder applications.

For engineers reviewing the TBMA302-Q-RD-01A datasheet, TBMA302-Q-RD-01A pinout, TBMA302-Q-RD-01A application, or TBMA302-Q-RD-01A equivalent, this board enables immediate evaluation of MA302 angle sensing performance-including incremental A/B/Z outputs, PWM, and optional commutation signals-without custom PCB design or soldering.

Technical Context

The TBMA302-Q-RD-01A implements Board Type 2 architecture per the TBMA User Guide Rev. 1.2, matching the MA302's I/O capability set: it exposes SPI (CS/SCLK/MOSI/MISO), TEST, and six configurable I/O pins (IO1–IO6) mapped to MA302 pins 1, 2, 3, 6, 9, and 15. The board includes unpopulated 0402 0Ω resistors (R1/R2) for optional signal routing and supports 3.3 V VDD with dedicated GND and TEST connections.

No on-board voltage regulation or level-shifting circuitry is present; all logic-level signals align with MA302's native 3.3 V operation. Connectors CN1 and CN2 are unpopulated 2.54 mm pitch receptacles (Wurth/TE Connectivity compatible), enabling direct cabling to host controllers or test equipment for serial communication and real-time angle data capture.

Key Specifications

Availability

TBMA302-Q-RD-01A is available at Aetrix Electronics and suitable for servo drives, robotics, and BLDC motor commutation requiring stable component supply, quick-turn evaluation, and repeatable sensor characterization workflows.

Supply support for TBMA302-Q-RD-01A includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Monolithic Power Systems (MPS) is a fabless semiconductor company specializing in high-performance power management and sensing solutions, with global design, sales, and support infrastructure.

TBMA302-Q-RD-01A belongs to the TBMA test board family, engineered to accelerate development for MPS MagAlpha magnetic position sensors across industrial and automotive motion control applications.

FAQ

What sensor does TBMA302-Q-RD-01A support?

TBMA302-Q-RD-01A is designed exclusively for the MA302 MagAlpha magnetic position sensor. It matches the MA302's pinout, electrical interface requirements, and mechanical mounting options as defined in the TBMA User Guide Rev. 1.2 and MA302 datasheet.

Does TBMA302-Q-RD-01A include populated connectors?

No. TBMA302-Q-RD-01A ships with unpopulated 2.54 mm pitch 8-position receptacle footprints (CN1 and CN2). Users must solder compatible connectors-such as Wurth 690367280876 or TE Connectivity 7-2178711-8-to establish external SPI and I/O connections.

Which output signals are accessible on TBMA302-Q-RD-01A?

The board exposes MA302's full I/O set via CN2: IO1 (Pin 1), IO2 (Pin 2), IO3 (Pin 3), IO4 (Pin 6), IO5 (Pin 9), and IO6 (Pin 15). These support configurable functions including MGH/MGL, PWM, A/B/Z, or custom digital outputs depending on MA302 configuration.

Is firmware or software provided with TBMA302-Q-RD-01A?

No standalone firmware is included. Evaluation requires host-side SPI communication-using standard drivers or MPS-provided reference code-and interpretation of MA302 register maps. The TBMA User Guide documents register access sequences and default configurations.

Can TBMA302-Q-RD-01A be used with other MagAlpha sensors?

No. TBMA302-Q-RD-01A is mechanically and electrically tailored to the MA302. Other MagAlpha variants (e.g., MA310, MA702) require their respective board types (TBMA310-Q-LT, TBMA702-Q-LT) due to differences in pin assignment, package size, and feature enablement.

What magnet is recommended for use with TBMA302-Q-RD-01A?

MPS recommends diametrically magnetized magnets-such as those in the MAG10 family (cylinder, ring, or half-cylinder)-to ensure optimal angular accuracy. Axially magnetized magnets are incompatible; suppliers like Maurer Magnetics AG and Bomatec AG offer stock diametric options verified for MagAlpha sensors.