Overcurrent can damage machines and appliances. Can a comparator work with all voltages, and helps keep equipment safe and running reliably? Find out!
Industrial equipment such as motor drives and power circuits handle large currents, making sudden overcurrent a major risk. Overcurrent can damage equipment, halt production, and compromise safety, so fast and accurate detection is essential. As circuits shrink and operate at narrower voltage and current ranges, even slight overcurrent can impose significant stress, increasing demand for faster and more precise detection.
Toshiba Electronic Devices & Storage Corporation has launched the TC75W71FU, a CMOS dual comparator with high-speed response and a full input/output range Rail-to-Rail. Shipments start today. The TC75W71FU improves on the previous TC75W56FU with faster propagation delays, up to 45 ns for low-to-high transitions and 30 ns for high-to-low transitions. This allows immediate shutdown in overcurrent situations, enhancing operational safety.
The comparator can be used in a wide range of industrial equipment, including industrial robots, uninterruptible power supplies UPS, photovoltaic generators, and other power supply systems. It is also suitable for consumer equipment such as home appliances and various types of power supplies.
The comparator supports the full input/output voltage range from GND to Vcc, simplifying design. It operates at a minimum supply voltage of 1.8 V, supporting low-voltage systems. Its push-pull output ensures fast rise and fall times without an external pull-up resistor, maintaining stable voltage levels.
Some of the key features of the TC75W71FU, a CMOS dual comparator include:
- Full I/O range
- Low voltage drive: 1.8V
- High-speed response: tPLH 45ns (max), tPHL 30ns (max) (V DD =3.3V)
The company plans to expand the lineup with the TC75W72FU, which adds hysteresis for better noise immunity, and the TC75W73FU, offering both hysteresis and an open-drain output that can interface with different voltage domains. The company also aims to continue developing comparators that enhance the safety and reliability of industrial equipment while broadening its product range to meet diverse customer needs.
