Texas Instruments TMCS1127CEVM

Overview

TMCS1127CEVM from Texas Instruments is a dedicated evaluation module for the TMCS1127C-series isolated Hall-effect current-sense amplifiers, configured with 0.33V quiescent output reference and five fixed sensitivities (25–150 mV/A). It enables high-voltage current measurement up to ±1100 VDC common-mode and supports DC load currents up to 90 A via reinforced isolation barrier testing.

For engineers reviewing the TMCS1127CEVM datasheet, TMCS1127CEVM pinout, TMCS1127CEVM application, or TMCS1127CEVM equivalent, this EVM provides rapid functional validation of all TMCS1127C variants-including sensitivity selection, output voltage swing verification under load, and thermal performance assessment-within lab-based high-voltage development environments.

Technical Context

The TMCS1127CEVM is a single PCB designed to be broken into five detachable segments, each populated with one TMCS1127C variant (C1–C5) in SOIC-10 package. Each segment includes dedicated high-current lug connectors (IN+/IN−), test points for all device pins, and bypass capacitors (0.1 µF standard, 10 µF optional) to support stable operation across 3–5.5 V supply.

It implements low-side and high-side current measurement configurations using isolated power domains: "HV" side for load connection (up to ±1100 VDC), and "LV" side for device supply and output monitoring. Output filtering (R1_x/C2_x footprints) and thermal management (large copper planes, lug-mounted heat dissipation) are integrated per segment.

Key Specifications

Availability

TMCS1127CEVM is available at Aetrix Electronics and suitable for high-voltage power conversion, motor drive validation, and industrial energy metering applications requiring stable component supply and rapid prototyping support.

Supply support for TMCS1127CEVM 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 specializing in analog and embedded processing technologies, with leadership in precision sensing, isolation, and high-reliability signal conditioning solutions.

The TMCS1127CEVM belongs to TI's TMCS1127x Evaluation Module family, engineered specifically to accelerate functional validation of isolated Hall-effect current sensors across multiple gain and reference point variants in lab-grade high-voltage development workflows.

FAQ

What is the purpose of the TMCS1127CEVM?

The TMCS1127CEVM is an evaluation module designed exclusively for the TMCS1127C-series isolated Hall-effect current-sense amplifiers. It allows engineers to validate all five sensitivity options (25–150 mV/A) at the 0.33 V reference point under real-world high-voltage conditions-up to ±1100 VDC common-mode and 90 A DC load-using its segmented PCB layout, lug connectors, and accessible test points. The TMCS1127CEVM supports both low-side and high-side measurement topologies.

Does the TMCS1127CEVM include the actual TMCS1127C ICs?

Yes, the TMCS1127CEVM includes five populated TMCS1127C devices-one per detachable segment: TMCS1127C1QDVGR through TMCS1127C5QDVGR-all in SOIC-10 package. Each device is pre-mounted and electrically connected to its respective lug terminals, bypass capacitors, and test points, enabling immediate functional evaluation without soldering or component placement.

Can the TMCS1127CEVM be used for electromagnetic compatibility (EMC) testing?

No, the TMCS1127CEVM is explicitly not laid out for electromagnetic compatibility (EMC) or electromagnetic interference (EMI) testing. Its PCB layout prioritizes functional evaluation, thermal dissipation, and mechanical flexibility (via breakable segments), not controlled impedance, shielding, or EMC-compliant routing. TI states in the user's guide that the fixture layout is not intended as a model for target circuit implementation or EMC validation.

What safety precautions apply when using the TMCS1127CEVM?

The TMCS1127CEVM is classified as a Texas Instruments High Voltage Evaluation Module (TI HV EVM) and requires strict adherence to TI's HV safety guidelines: qualified personnel only, de-energized setup before connections, use of insulated tools, EPO-protected power strips for >50 Vrms circuits, and prohibition of contact with HV terminals during operation. Warning labels ("DANGER HIGH VOLTAGE", "CAUTION HOT SURFACE") are printed directly on the board per TI SBAU425.

How does the TMCS1127CEVM differ from the TMCS1127AEVM and TMCS1127BEVM?

The TMCS1127CEVM differs solely in the quiescent output reference voltage of its onboard devices: it uses TMCS1127C variants (0.33 V), whereas TMCS1127AEVM uses A-variants (2.5 V) and TMCS1127BEVM uses B-variants (1.65 V). All three EVMs share identical PCB design, segmentation, lug connectors, test points, and support for the same five sensitivities-only the U1_x IC part numbers and reference point differ per kit.