Description：

The TPAFE411 is designed only for Hall elements to use inclosed-loop current-sensor modules. The internal precisionexcitation circuitry for the Hall-element could effectivelyeliminate the offset and offset-drift of the Hall element. TheTPAFE411 also provides a 350mA H-bridge for driving thesensor compensation coil, and an internal precision currentsensing amplifier to generate the output signal.There is a high accuracy voltage reference, high accuracy HALLSensor front end and precision current sensing amplifier insideTPAFE411. These techniques significantly improve theaccuracy of the overall current-sensor module. When the powersupply is 5V, the output voltage is pin-selectable to support a2.5V output. When the power supply is 3.3V, the output voltageis to support a 1.65V output.For the heat dissipation, 4mm × 4-mm QFN package withPowerPAD is selected for the TPAFE411. The TPAFE411 isspecified to work over industrial temperature range of –40°C to+125°C.

Features：

⚫ Internal Precision Voltage Reference

◆ Accuracy: 0.2% (max)

◆ Temp Drift: 50ppm (max)

◆ Pin Selectable for 2.5V, 1.65V, and Ratio Metric

⚫ Switching Current HALL Sensor Excitation

◆ Reduce HALL Sensor Offset and Drift

◆ Reduce HALL Sensor 1/f Noise

⚫ Extended Current Measurement Range

◆ H-Bridge Drive Capability: 350 mA

⚫ Precision Current Sensing Amplifier

◆ Offset and Drift: 100μV and 2μV/°C (Max)

◆ Bandwidth: 200kHz

⚫ Overrange and Error Flags

⚫ Power Supply: 2.7V to 5.5V

⚫ Package: QFN 4mm x 4mm with PowerPAD

⚫ Temp Range: –40°C to +125°CApplications

⚫ Close-Loop HALL Sensor Module