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Product details

Parameters

Continuous current (Max) (A) 20 Isolation working voltage VIOWM (rms) (V) 424 Sensitivity (Typ) (mV/A) 50, 100, 200, 400 Sensitivity error (%) 0.3 Sensitivity error drift (+/-) (Max) (ppm/°C) 50 Input offset current (+/-) (Max) (mA) 37.5 Input offset current drift (+/-) (Typ) (µA/°C) 0.1 Features Internal Zero Current Reference Voltage Small signal bandwidth (kHz) 80 Supply voltage (Max) (V) 5.5 Supply voltage (Min) (V) 3 Iq (Max) (mA) 5 CMTI (kV/µs) 25 TI functional safety category Functional Safety-Capable open-in-new Find other Hall-effect current sensors

Package | Pins | Size

SOIC (D) 8 19 mm² 4.9 x 3.9 open-in-new Find other Hall-effect current sensors

Features

  • AEC-Q100 qualified for automotive applications
    • Temperature Grade 1: –40°C to 125°C, TA
  • Functional Safety-Capable
  • Total error: ±0.51% typical, ±1.15% maximum, –40°C to 85°C
    • Sensitivity error: ±0.5%
    • Offset error: 9 mA
    • Offset drift: 0.04 mA/°C
    • Linearity error: 0.05%
  • Lifetime and environmental drift: <±0.5%
  • 3-kVRMS isolation rating
  • Robust 600-V lifetime working voltage
  • Bidirectional and unidirectional current sensing
  • Zero drift internal reference
  • Operating supply range: 3 V to 5.5 V
  • Signal bandwidth: 80 kHz
  • Multiple sensitivity options:
    • TMCS1101A1B/U -Q1: 50 mV/A
    • TMCS1101A2B/U -Q1: 100 mV/A
    • TMCS1101A3B/U -Q1: 200 mV/A
    • TMCS1101A4B/U -Q1: 400 mV/A
  • Safety related certifications
    • UL 1577 Component Recognition Program
    • IEC/CB 62368-1
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Description

The TMCS1101-Q1 is a galvanically isolated Hall-effect current sensor capable of DC or AC current measurement with high accuracy, excellent linearity, and temperature stability. A low-drift, temperature-compensated signal chain provides < 1.5% full-scale error across the device temperature range.

The input current flows through an internal 1.8-mΩ conductor that generates a magnetic field measured by an integrated Hall-effect sensor. This structure eliminates external concentrators and simplifies design. Low conductor resistance minimizes power loss and thermal dissipation. Inherent galvanic insulation provides a 600-V lifetime working voltage and 3-kVRMS basic isolation between the current path and circuitry. Integrated electrical shielding enables excellent common-mode rejection and transient immunity.

The output voltage is proportional to the input current with four sensitivity options. Fixed sensitivity allows the TMCS1101-Q1 to operate from a single 3-V to 5.5-V power supply, eliminates ratiometry errors, and improves supply noise rejection. The current polarity is considered positive when flowing into the positive input pin. Both unidirectional and bidirectional sensing variants are available.

The TMCS1101-Q1 draws a maximum supply current of 6 mA, and all sensitivity options are specified over the operating temperature range of –40°C to +125°C.

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Technical documentation

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Type Title Date
* Data sheet TMCS1101-Q1 AEC-Q100, 1.5% Precision, Basic Isolation Hall-Effect Current Sensor With ±600-V Working Voltage datasheet Jun. 04, 2021
Functional safety information TMCS1101-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA Mar. 30, 2021
Application note Thermal Implementation Guide for In-Package Magnetic Current Sensors Jul. 12, 2020
White paper Improving Performance in High-Voltage Systems With Zero-Drift Hall-Effect Curren Jun. 29, 2020
User guide TMCS1101EVM User's Guide (Rev. A) Mar. 25, 2020
Application note Precision Designs with Non-Ratiometric Magnetic Current Sensors Jul. 01, 2019
Application note Low-Drift, Precision, In-Line Isolated Magnetic Motor Current Measurements Apr. 15, 2019

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARD Download
document-generic User guide
59
Description
The TMCS1101EVM is a tool intended to facilitate rapid, convenient use of the TMCS1101, an isolated Hall-effect precision current sense monitor utilizing an internal ratiometric reference. This evaluation module allows the user push the max operating current through the Hall-input side while (...)
Features
  • Evaluation of the TMCS1101Ax in all gain options
  • Test points to allow ease of acess to device pins
  • Large copper planes to help with heat dissipation
  • Large lug connectors to connect the EVM to large current carrying leads

Design tools & simulation

SIMULATION MODEL Download
SBOMB08A.TSC (231 KB) - TINA-TI Reference Design
SIMULATION MODEL Download
SBOMB09B.ZIP (54 KB) - TINA-TI Spice Model
SIMULATION MODEL Download
SBOMBD2.ZIP (21 KB) - PSpice Model
SIMULATION MODEL Download
SBOMBD3.ZIP (21 KB) - PSpice Model
SIMULATION MODEL Download
SBOMBD4.ZIP (21 KB) - PSpice Model
SIMULATION MODEL Download
SBOMBD5.ZIP (21 KB) - PSpice Model
SIMULATION MODEL Download
SBOMBD7.ZIP (22 KB) - PSpice Model
SIMULATION MODEL Download
SBOMBD8.ZIP (22 KB) - PSpice Model
SIMULATION MODEL Download
SBOMBD9.ZIP (21 KB) - PSpice Model
SIMULATION MODEL Download
SBOMBE1.ZIP (20 KB) - PSpice Model

CAD/CAE symbols

Package Pins Download
SOIC (D) 8 View options

Ordering & quality

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  • Qualification summary
  • Ongoing reliability monitoring

Support & training

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