Infineon Technologies AG Power - Automotive conventional powertrain ICs - Constant Current Control IC for Transmission - TLE82452-3SA TLE82452-3SA

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 Summary of Features 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 Benefits +/- 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 Potential Applications Variable force solenoids (e.g. automatic transmission solenoids) Constant current controlled solenoids like Idle Speed Control Exhaust Gas Recirculation Valve control Suspension Control