Texas Instruments TMCS1101EVM

Overview

TMCS1101EVM from Texas Instruments is an evaluation module designed to demonstrate and validate the TMCS1101 galvanically isolated Hall-effect current sensor, supporting bidirectional/unidirectional sensing up to ±46A (A1B variant), 80kHz bandwidth, ±1.15% max total error over –40°C to +125°C, and 3kVRMS basic isolation on a SOIC-8 platform.

For engineers reviewing the TMCS1101EVM datasheet, TMCS1101EVM pinout, TMCS1101EVM application, or TMCS1101EVM equivalent, this module enables rapid prototyping of isolated current measurement in motor drives, inverters, and power monitoring systems - with validated thermal derating, safety certification alignment (UL 1577, IEC 62368-1), and TMCS1101 device-level electrical characterization.

Technical Context

The TMCS1101EVM implements the TMCS1101 sensor in its native D (SOIC-8) package, with input conductor pins (IN+, IN–) electrically isolated from output (VOUT), supply (VS), and ground (GND) by a 600V lifetime working voltage barrier. It supports all four sensitivity variants (50–400 mV/A) and both unidirectional (U) and bidirectional (B) zero-current output configurations.

Thermal performance is characterized per the board's specific layout: RθJA = 36.6°C/W, enabling 16A continuous RMS current at TA = 125°C and validating safety limiting values (IS = 30A side-1, PS = 3.4W). The module includes traceable mounting, recommended decoupling, and conforms to insulation metrics (CLR/CPG = 4mm, VIOWM = 424VRMS).

Key Specifications

Availability

TMCS1101EVM is available at Aetrix Electronics and suitable for motor control validation, inverter current loop testing, and AC/DC power monitoring applications requiring stable component supply, pre-validated isolation integrity, and production-ready thermal performance data.

Supply support for TMCS1101EVM 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

Texas Instruments is a global semiconductor company delivering analog and embedded processing solutions, with leadership in precision sensing, isolation, and power management technologies.

The TMCS1101EVM belongs to TI's current-sensing evaluation platform family, engineered to accelerate design-in of high-accuracy, isolated Hall-effect sensors into industrial motor drives, renewable energy inverters, and power supply protection circuits.

FAQ

What is the primary function of the TMCS1101EVM?

The TMCS1101EVM is an evaluation module that provides a ready-to-use platform for characterizing and validating the TMCS1101 isolated Hall-effect current sensor. It enables engineers to measure DC/AC current with up to ±46A range, verify 80kHz bandwidth response, assess isolation integrity, and confirm thermal behavior under real-world conditions - all without custom PCB development. The TMCS1101EVM directly supports all TMCS1101 variants and sensitivity options.

Does the TMCS1101EVM support both unidirectional and bidirectional current sensing?

Yes, the TMCS1101EVM supports both unidirectional (U) and bidirectional (B) variants of the TMCS1101 sensor. The board accommodates TMCS1101A1U through A4U (zero-current output = 0.1 × VS) and TMCS1101A1B through A4B (zero-current output = 0.5 × VS), allowing flexible configuration for applications like motor phase current (bidirectional) or DC bus monitoring (unidirectional). The TMCS1101EVM maintains full signal chain integrity for either mode.

What safety certifications are validated on the TMCS1101EVM?

The TMCS1101EVM validates the TMCS1101's UL 1577 Component Recognition and IEC/CB 62368-1 certifications under real mounting conditions. Its layout preserves required creepage and clearance (4mm), achieves VIOWM = 424VRMS and VIOTM = 4242VPK, and meets partial discharge limits (≤5pC). These results are documented in TI's SBOS825E datasheet, section 6.6–6.7, specifically referencing measurements taken on the TMCS1101EVM.

How does the TMCS1101EVM enable thermal derating verification?

The TMCS1101EVM provides the exact thermal resistance (RθJA = 36.6°C/W) and power dissipation data (PD = 673mW max) needed to calculate junction temperature and apply TI's published thermal derating curves. Engineers use these values - measured on the TMCS1101EVM - to determine allowable current at elevated ambient temperatures (e.g., 16A at 125°C), ensuring operation stays within TJ ≤ 150°C. This eliminates estimation uncertainty in thermal design.

Can the TMCS1101EVM be used for production-level validation of current-sense accuracy?

Yes, the TMCS1101EVM delivers production-relevant accuracy validation: it supports full-range linearity testing (±0.05% nonlinearity), offset drift measurement (±0.04mA/°C), and total error assessment (±1.15% max over –40°C to +125°C) as specified for the TMCS1101. Its calibrated layout, low-noise grounding, and matched decoupling allow engineers to replicate datasheet test conditions - making TMCS1101EVM suitable for pre-compliance functional verification before system integration.