TDA5143T Overview
The TDA5143T is a bipolar integrated circuit used to drive 3-phase brushless DC motors in full-wave mode. The device is sensorless (saving of 3 hall-sensors) using the back-EMF sensing technique to sense the rotor position. A special circuit is built-in to reduce the EMI (soft switching output stages).
TDA5143T Key Features
- Full-wave mutation (using push/pull drivers at the output stages) without position sensors
- Built-in start-up circuitry
- Three push-pull outputs
- output current 0.85 A (typ.)
- low saturation voltage
- built-in current limiter
- soft-switching outputs for low Electromagnetic Interference (EMI)
- Thermal protection
- Flyback diodes
- Tacho output without extra sensor
TDA5143T Applications
- General purpose spindle driver (e.g. for hard disk)
- Laser beam printer. GENERAL DESCRIPTION The TDA5143T is a bipolar integrated circuit used to drive 3-phase brushless DC motors in full-wave mode. The device is