TLE92464ED TLE92464ED is designed for control of 4 linear solenoids in automatic transmission, electronic stability control, and active suspension applications.
The device controls the current through inductive loads with less than 1% error. Target currents can be programmed from 0 to 1500mA with a resolution of 15 bit. The TLE92464ED supports dither currents up to 1800mA. The dither generator superimposes a triangular or trapezoidal waveform with programmable amplitude and frequency on the programmed current setpoint.
The device includes the drive transistors and the current sensing resistors to minimize the number of external components. TLE92464ED is ISO 26262 compliant and achieves safety level ASIL C.
Summary of Features
• Four independent low side channels with integrated MOSFETs (RDSon = 115 mΩ)
• <1% current control accuracy
• Programmable setpoint from 0mA to 1.5A
• Load current including dither 1.8A
• Current in parallel channel mode 2.7A
• Integrated dither generator with programmable amplitude, frequency and waveform
• 15 bit current setpoint resolution
• Integrated sense resistor RSHUNT = 140 mΩ
• Excellent immunity to large load supply voltage changes
• Operation down to 3.5 V at VDD pin
• 32 bit SPI with 8 bit CRC and SPI watchdog
• Sophisticated protection and diagnostic functions for each channel in on and off state
- Independent thermal shutdown for each channel
- Diagnostic Function (Open Load, Short Circuit Ground, Over Current)
- Voltage monitoring
- Overtemperature protection
• Two independent current feedback paths
• Integrated system clock with clock watchdog
• Temperature range -40°C to 175 °C
• Small power package PG-DSO-36-72
• Green product (RoHS-compliant)
• Pb-free (RoHS-compliant) package
• AEC-Q100 Grade 0 qualified
• ISO 26262 Safety Element out of Context for safety requirements up to ASIL C
Benefits
• Enables ASIL D on system level
• Full temp range up to 175°C
• +/- 1% Current Accuracy over lifetime (-40C to 150C)
• Excellent regulation performance for step responses
• Excellent Battery Ripple Rejection
• Ease of use due to family concept with 6CH TLE92466ED device
• Same software and package as TLE92466ED enables maximal reuse
• Scalable solution
• 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
Potential Applications
• Variable force solenoids (e.g. automatic transmission solenoids)
• Other constant current solenoids
- Idle air control
- Exhaust gas recirculation
- Vapor management valve
- Suspension control
