Overview
The TMCS1107-Q1, specifically the TMCS1107A3BQDRQ1 model from Texas Instruments, is a galvanically isolated Hall-effect current sensor designed for high-accuracy DC or AC current measurement. This device is AEC-Q100 qualified for automotive applications and operates within a temperature range of –40°C to 125°C. It features a low-drift, temperature-compensated signal chain that ensures less than 3% full-scale error across the device temperature range. The sensor integrates an internal 1.8-mΩ conductor and a Hall-effect sensor, eliminating the need for external concentrators and minimizing power loss and thermal dissipation.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Supply Range | 3 V to 5.5 V | V |
| Sensitivity (TMCS1107A3B) | 200 mV/A | mV/A |
| Total Error | ±1% typical, ±3% maximum | % |
| Sensitivity Error | ±0.9% | % |
| Offset Error | ±15 mA | mA |
| Offset Drift | ±0.2 mA/°C | mA/°C |
| Linearity Error | 0.5% | % |
| Signal Bandwidth | 80 kHz | kHz |
| Isolation Rating | 3 kVRMS | kVRMS |
| Lifetime Working Voltage | 420 V | V |
| Input Conductor Resistance | 1.8 mΩ | mΩ |
| Maximum Continuous RMS Current | 16 A at 125°C | A |
| Supply Current | 6 mA maximum | mA |
Key Features
- AEC-Q100 qualified for automotive applications with a temperature grade of –40°C to 125°C.
- Functional Safety-Capable with documentation available to aid in functional safety system design.
- Multiple sensitivity options: 50 mV/A, 100 mV/A, 200 mV/A, and 400 mV/A.
- Zero drift internal reference and bidirectional/unidirectional current sensing capabilities.
- Robust 420-V lifetime working voltage and 3-kVRMS basic isolation.
- Integrated electrical shielding for excellent common-mode rejection and transient immunity.
- Fixed sensitivity allows operation from a single 3-V to 5.5-V power supply, eliminating ratiometry errors and improving supply noise rejection.
- Safety-related certifications including UL 1577 component recognition program and IEC/CB 62368-1.
Applications
- Motor and load control.
- Inverter and H-bridge current measurements.
- Power factor correction.
- Overcurrent protection.
- DC and AC power monitoring.
Q & A
- What is the operating temperature range of the TMCS1107-Q1?
The operating temperature range is –40°C to 125°C.
- What are the sensitivity options for the TMCS1107-Q1?
The sensitivity options are 50 mV/A, 100 mV/A, 200 mV/A, and 400 mV/A.
- What is the maximum continuous RMS current the TMCS1107-Q1 can handle?
The maximum continuous RMS current is 16 A at 125°C.
- What is the isolation rating of the TMCS1107-Q1?
The isolation rating is 3 kVRMS.
- Is the TMCS1107-Q1 suitable for automotive applications?
Yes, it is AEC-Q100 qualified for automotive applications.
- What is the signal bandwidth of the TMCS1107-Q1?
The signal bandwidth is 80 kHz.
- Does the TMCS1107-Q1 support bidirectional current sensing?
Yes, it supports both unidirectional and bidirectional current sensing.
- What is the maximum supply current of the TMCS1107-Q1?
The maximum supply current is 6 mA.
- What safety certifications does the TMCS1107-Q1 have?
It has certifications including UL 1577 component recognition program and IEC/CB 62368-1.
- What is the input conductor resistance of the TMCS1107-Q1?
The input conductor resistance is 1.8 mΩ.
