Texas Instruments TMCS1100EVM

Overview

TMCS1100EVM from Texas Instruments is an evaluation module designed to characterize the TMCS1100 family of isolated, voltage-output Hall-effect current sense amplifiers - supporting gain options of 50 mV/A, 100 mV/A, 200 mV/A, and 400 mV/A - across high-side and low-side configurations at common-mode voltages up to 600 VDC.

For engineers reviewing the TMCS1100EVM datasheet, TMCS1100EVM pinout, TMCS1100EVM application, or TMCS1100EVM equivalent, this EVM enables functional validation of bidirectional current sensing, reference voltage configuration (via buffered divider or external supply), temperature monitoring, and output filtering - all on a single PCB segmented into four independent gain-variant test sections.

Technical Context

The TMCS1100EVM implements four physically separate evaluation segments - each populated with one TMCS1100 variant (A1–A4) in an SOIC-8 package - enabling side-by-side comparison of gain-dependent output swing, noise, and linearity under identical test conditions. Each segment includes dedicated test points for VOUT, VREF (pre- and post-filter), IS+, IS–, VCC, GND, and board temperature.

Circuitry supports both unidirectional and bidirectional operation: jumper J1x selects between grounding VREF, connecting to an external REF supply (0 V to VCC), or routing through a user-configurable buffered voltage divider (U3x = TLV376IDBVR). Load connections use high-current lug terminals rated for ≥20 A DC, with layout optimized for magnetic field coupling via the device's integrated lead frame.

Key Specifications

Availability

TMCS1100EVM is available at Aetrix Electronics and suitable for industrial motor drives, solar inverters, battery management systems, and EV charging infrastructure requiring stable component supply and validated current-sensing evaluation capability.

Supply support for TMCS1100EVM 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, embedded processing, and high-reliability silicon solutions for industrial, automotive, and power applications.

The TMCS1100EVM belongs to TI's High Voltage Evaluation Module (TI HV EVM) family - engineered specifically for safe, lab-based characterization of isolated current-sense devices operating at up to 600 VDC common-mode potential.

FAQ

What is the primary purpose of the TMCS1100EVM?

The TMCS1100EVM is a Texas Instruments evaluation module designed exclusively to validate the performance of the TMCS1100 family of isolated Hall-effect current sense amplifiers. It provides four independent test segments - each pre-populated with a different gain variant (A1–A4) - allowing engineers to assess output linearity, offset, bandwidth, and thermal behavior under real-world high-common-mode voltage conditions up to 600 VDC. The TMCS1100EVM is not intended for production use.

Can the TMCS1100EVM be used for bidirectional current measurements?

Yes, the TMCS1100EVM supports bidirectional current sensing by configuring the VREF input via jumper J1x. When connected to a buffered voltage divider or external supply set between GND and VCC, the TMCS1100 output centers around that reference - enabling positive and negative current detection relative to VREF. This functionality is confirmed in Figure 4-2 of the TMCS1100EVM User's Guide and applies directly to all four gain variants on the TMCS1100EVM board.

Does the TMCS1100EVM include on-board temperature monitoring?

Yes, the TMCS1100EVM integrates a TMP235A2DBZR analog temperature sensor (10 mV/°C) on each of its four gain segments (U2A–U2D). These sensors provide board-level thermal data via test point TPx on each segment and are explicitly documented in Section 3.2.9 of the TMCS1100EVM User's Guide. While not measuring die temperature directly, they support ambient correlation during current-sensing tests.

How is isolation implemented on the TMCS1100EVM?

The TMCS1100EVM itself does not provide isolation; it hosts the TMCS1100 - an integrated isolated current-sense amplifier with galvanic isolation built into its SOIC-8 package (D0008A). The isolation barrier separates the high-voltage current path (IS+/IS–) from the low-voltage signal domain (VOUT, VCC, GND). The TMCS1100EVM's layout maintains creepage and clearance distances appropriate for 600 VDC working voltage, as required by TI HV EVM safety guidelines.

Are schematics and PCB layout files available for the TMCS1100EVM?

Yes, complete design resources for the TMCS1100EVM - including schematic diagrams (Figure 5-1), top/bottom layer artwork (Figures 5-2 to 5-5), and a full bill of materials (Table 5-1) - are provided in the official TMCS1100EVM User's Guide (SBOU209B). However, TI explicitly states these figures are "not intended to be used for manufacturing TMCS1100EVM PCBs" and are supplied solely for evaluation and reference purposes.