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

Overview

TBMA302-Q-LT-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 dual 8-pin headers (CN1/CN2), and integrates decoupling capacitors and test points for rapid functional validation in motor control and encoder applications.

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

Technical Context

The TBMA302-Q-LT-01A implements Type 2 board architecture per the TBMA User Guide Rev. 1.2, matching the MA302's I/O capability set. It routes all core SPI signals (CS, SCLK, MISO, MOSI), test functionality (TEST), and configurable I/O pins (IO1–IO6) to two unpopulated 2.54 mm pitch 8-pin receptacle connectors.

This board type omits VFLASH and dedicated motor commutation outputs found on Type 1, instead supporting flexible I/O mapping (e.g., IO1–IO6 correspond to MA302 pins 1, 2, 3, 6, 9, 15) and optional magnetic threshold outputs (MGL/MGH), enabling direct integration with BLDC gate drivers or FPGA-based encoder logic.

Key Specifications

Availability

TBMA302-Q-LT-01A is available at Aetrix Electronics and suitable for servo drives, robotics, automotive EPS systems, and BLDC motor commutation requiring stable component supply and rapid sensor validation.

Supply support for TBMA302-Q-LT-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 motion sensing solutions, with global design and support infrastructure.

TBMA302-Q-LT-01A belongs to the TBMA test board family, engineered to accelerate development for MagAlpha magnetic position sensors in high-reliability motion control applications.

FAQ

Does TBMA302-Q-LT-01A include the MA302 sensor pre-soldered?

Yes - the board ships fully assembled with the MA302 MagAlpha sensor mounted and electrically connected. No additional sensor placement or soldering is required before use.

What connector parts are recommended for CN1 and CN2?

MPS specifies Wurth Electronics 690367280876 or TE Connectivity 7-2178711-8 - both are 2.54 mm pitch, 8-position, surface-mount, tin-plated receptacle connectors compatible with standard 0.100" headers.

Can TBMA302-Q-LT-01A be used with the EVKT-MagAlpha-MagDiff evaluation kit?

Yes - the TBMA series, including TBMA302-Q-LT-01A, is explicitly listed as compatible with the EVKT-MagAlpha-MagDiff and EVKT-MACOM kits, enabling plug-and-play connection via standardized interfaces.

Which MA302 pins map to CN2.1 through CN2.6 on this board?

Per Table 5 of the TBMA User Guide Rev. 1.2: CN2.1 = IO6 (MA302 Pin 15), CN2.2 = IO1 (Pin 1), CN2.3 = IO5 (Pin 9), CN2.4 = IO4 (Pin 6), CN2.5 = IO2 (Pin 2), CN2.6 = IO3 (Pin 3).

Is VFLASH present on TBMA302-Q-LT-01A?

No - VFLASH is only routed on Type 1 boards (e.g., TBMA300-Q-LT). The TBMA302-Q-LT-01A follows Type 2 layout, which excludes VFLASH and instead emphasizes general-purpose I/O flexibility.

Does the board support both side-shaft and end-of-shaft mechanical configurations?

Yes - the LT (long) form factor positions the MA302 at the board edge, allowing direct coupling to either side-shaft or end-of-shaft magnet assemblies without adapter hardware.