TLE82452-3SA
Überblick
The two channels can be used as either low-side or high-side drivers in any combination. The device includes the drive transistor, recirculation transistor, and current sensing resistor; minimizing the number of required external components. This device is capable of regulating the average current flow in a load up to 1500 mA, depending on the dither settings and the load characteristics, with 0.73 mA resolution. A triangular dither waveform generator, when enabled, superimposes a triangular waveform with programmable amplitude and frequency on the programmed current setpoint
Zusammenfassung der Merkmale
- Two independent low side / high side configurable channels
- Integrated half-bridge power stages
- RON(max) = 250 mOhms@ Tj = 150 °C
- Integrated sense resistor with internal TCR compensation
- Load current measurement range = 0 mA to 1500 mA (typical)
- Current setpoint resolution = 0.73 mA
- Current control accuracy (-40C to 125C)
- +/- 5mA for load currents less than 500 mA
- +/- 1% for load currents greater than 500 mA
- Current control accuracy (-40C to 150C)
- +/- 7.5mA for load currents less than 500 mA
- +/- 1.5% for load currents greater than 500 mA
- Excellent immunity to large load supply voltage changes
- Integrated dither generator with programmable amplitude & frequency
- SPI interface for output control, diagnosis, and configuration
- Independent thermal shutdown for each channel
- Open load, switch bypass, and over-current protection and diagnosis for each channel
- Programmable slew rate control for reduced EMI
- Green Product (RoHS compliant)
- AEC Qualified
Vorteile
- +/- 1% Current Accuracy for Entire Channel (-40C to 125C)
- Very Fast Current Step Response (dependent on solenoid characteristics)
- Near ZERO Over/Under-shoot on step Response
- Excellent Battery Ripple Rejection
- AutoZero feature (automatically eliminates offset error)
- Ease of use
- Integrated Power Devices
- Minimizes number of components placement, simplifies PCB layout
- Enables current limitation, slew rate control and thermal protection
- Improved Short-to-Battery performance
- Integrated Shunt
- Enables calibration of current accuracy at IC test
- Simplifies module calibration
- Active Recirculation
- Reduces power dissipation
- Enables integration
- Enables HS/LS Configuration
Potentielle Zielanwendungen
- Variable force solenoids (e.g. automatic transmission solenoids)
- Constant current controlled solenoids like
- Idle Speed Control
- Exhaust Gas Recirculation
- Valve control
- Suspension Control
Support