Overview
The TMCS1101A3BQDRQ1 from Texas Instruments is a galvanically isolated Hall-effect current sensor designed for high accuracy and reliability in various industrial and automotive applications. This device is capable of measuring both DC and AC currents with excellent linearity and temperature stability. It features a low-drift, temperature-compensated signal chain that ensures a full-scale error of less than 1.5% across the device temperature range of –40°C to +125°C. 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 |
|---|---|---|
| Supply Voltage Range | 3 V to 5.5 V | V |
| Sensitivity | 200 mV/A | mV/A |
| Total Error | ±0.51% (typ), ±1.15% (max) | % |
| Sensitivity Error | ±0.5% | % |
| Offset Error | ±9 mA | mA |
| Offset Drift | ±0.04 mA/°C | mA/°C |
| Linearity Error | ±0.05% | % |
| Lifetime and Environmental Drift | <±0.5% | % |
| Isolation Rating | 3-kVRMS | kVRMS |
| Working Voltage | 600 V | V |
| Signal Bandwidth | 80 kHz | kHz |
| Package Type | SOIC (8) | |
| Body Size | 4.90 mm × 3.90 mm | mm |
Key Features
- Bidirectional and unidirectional current sensing capabilities.
- Zero drift internal reference for high accuracy.
- Galvanic isolation with 3-kVRMS rating and 600-V lifetime working voltage.
- Integrated electrical shielding for excellent common-mode rejection and transient immunity.
- Low conductor resistance (1.8 mΩ) to minimize power loss and thermal dissipation.
- Operating temperature range of –40°C to +125°C.
- Multiple sensitivity options (50 mV/A, 100 mV/A, 200 mV/A, 400 mV/A).
- Safety-related certifications including UL 1577 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 primary function of the TMCS1101A3BQDRQ1?
The primary function is to measure DC and AC currents with high accuracy and galvanic isolation. - What is the sensitivity of the TMCS1101A3BQDRQ1?
The sensitivity is 200 mV/A. - What is the operating temperature range of the TMCS1101A3BQDRQ1?
The operating temperature range is –40°C to +125°C. - What type of isolation does the TMCS1101A3BQDRQ1 provide?
The device provides galvanic isolation with a 3-kVRMS rating and 600-V lifetime working voltage. - What are the safety certifications for the TMCS1101A3BQDRQ1?
The device is certified under UL 1577 and IEC/CB 62368-1. - What is the signal bandwidth of the TMCS1101A3BQDRQ1?
The signal bandwidth is 80 kHz. - How does the TMCS1101A3BQDRQ1 minimize power loss and thermal dissipation?
It minimizes power loss and thermal dissipation through its low conductor resistance of 1.8 mΩ. - What are some common applications of the TMCS1101A3BQDRQ1?
Common applications include motor and load control, inverter and H-bridge current measurements, power factor correction, overcurrent protection, and DC and AC power monitoring. - What is the package type and body size of the TMCS1101A3BQDRQ1?
The package type is SOIC (8) with a body size of 4.90 mm × 3.90 mm. - Does the TMCS1101A3BQDRQ1 support bidirectional current sensing?
Yes, it supports both bidirectional and unidirectional current sensing.
