By assisting driver effort in controlling a vehicle's steering wheel, electric power steering (EPS) systems improve directional control and passenger safety while reducing engine loading, thus improving fuel efficiency.
Electric power steering (EPS) systems use an electric motor – typically a three-phase brushless DC (BLDC) motor – to replace the hydraulic actuation mechanism. An EPS can improve the driver's directional control of the vehicle and reduce engine loading, thus improving its fuel efficiency. It also enables variable-assist power steering where the level of assistance is greater at lower speeds when it is needed most and reduced at higher speeds.
ST's solutions for EPS include a full range of three-phase gate drivers and Power MOSFETs for driving BLDC motors, including 48 V domains. Dedicated power management ICs, and CAN transceivers as well as a wide range of flexible and innovative application-specific standard products (ASSP), covering all possible system partitions. SPC5 32-bit automotive microcontrollers provide the overall system control.
Design Tools
Development Tools
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Picture Part number Manufacturer Description 
ST-DIODE-FINDER ST Diode product finder application for Android and iOS Part NumberDiode product finder application for Android and iOS
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eDesignSuite
Automotive Analog and Power
| Part number | Description |
|---|---|
| L9396 | Multiple Power Supply for Automotive Applications |
| L9616 | High Speed Can Bus Transceiver |
| L9663 | PSI5 transceiver |
| VN5R003H-E | 3 mOhm reverse battery protection switch |
| VN7003AH | High-side driver with Current Sense analog feedback for automotive applications |
Automotive Microcontrollers
| Part number | Description |
|---|---|
| SPC574K72E5 | 32-bit Power Architecture MCU for Automotive Applications |
| SPC58NE84E7 | 32-bit Power Architecture MCU for High Performance Applications |
Protection Devices
| Part number | Description |
|---|---|
| ESDCAN01-2BLY | Automotive dual-line TVS in SOT23-3L for CAN bus (12 V system) |
| ESDCAN03-2BWY | Automotive dual-line TVS in SOT323-3L for CAN bus (12 V system) |
| ESDCAN05-2BWY | Automotive dual-line TVS in SOT323-3L for CAN bus (24 V system) |
| SM15TY | Automotive 1500 W TVS in SMC |
| SM30TY | Automotive 3000 W TVS in SMC |
| SM4TY | Automotive 400 W TVS in SMA |
| SMA6TY | Automotive 600 W TVS in SMA |
