Modern transmission systems require precise electronic control to ensure smooth shifting, fuel efficiency, and driving comfort. ST’s product portfolio provides the essential building blocks for the engine control units (ECU) of all major transmission types, including automatic transmission (AT), continuously variable transmission (CVT), dual clutch transmission (DCT), and automated manual transmission (AMT).
Our solutions support hydraulic transmissions requiring high-precision current-control valve drivers, voltage regulators, and sensor interfaces, as well as electric transmissions focused on motor drivers and robust power management. Available as standalone ICs or highly integrated U-chips (Umbrella Chips), such as the L9300, these devices help optimize space and reliability while simplifying system design.
Modern transmission systems require precise electronic control to ensure smooth shifting, fuel efficiency, and driving comfort. ST’s product portfolio provides the essential building blocks for the engine control units (ECU) of all major transmission types, including automatic transmission (AT), continuously variable transmission (CVT), dual clutch transmission (DCT), and automated manual transmission (AMT).
Our solutions support hydraulic transmissions requiring high-precision current-control valve drivers, voltage regulators, and sensor interfaces, as well as electric transmissions focused on motor drivers and robust power management. Available as standalone ICs or highly integrated U-chips (Umbrella Chips), such as the L9300, these devices help optimize space and reliability while simplifying system design.
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Product types
Benefits
- Precision current control: integrated current sensing with high accuracy ensures the exact positioning of hydraulic valves, directly translating to smoother gear shifts.
- Functional safety (ASIL Ready): with products like the L9396 (ASIL-D) and L9300 (ASIL-B), our portfolio supports the highest safety standards required for transmission and powertrain safety functions.
- Start-stop support: ntegrated boost regulators ensure the transmission ECU remains fully operational even during deep cranking battery voltage drops.
- High Integration: U-Chip configurations reduce PCB footprint by up to 50%, a critical factor for "on-transmission" ECUs that must fit within extremely tight mechanical spaces.