Automotive pumps requirements differ in ambient temperature, power, and the liquid they pump. Pumps must work reliability and operate without wear. Legacy pump designs use DC motors, while next-generation pumps use BLDC (brush-less DC) motors. BLDC motor control allows designers the ability to precisely adjust the motor torque and speed according to demand. Typical automotive pump power levels exceed 100W and can range down to 10W for decentralized pumps. The hydraulic pumps in stability control systems need power levels around 1KW. Precise electric motor rotor position feedback is not important in pumps. Hence engineers use cost efficient back-EMF (electromotive force) or FOC (field-oriented control) rotor position feedback. An exception is the fuel pump, where a precise flow control is mandatory.
For simple inexpensive pump applications, designers control the pump with a LIN (local interconnect network) bus. Pumps used in stability control systems need higher data rates and are typically connected to the main car backbone CAN (controller area network) bus.
|Atmel Gate Driver SBCs||Description|
|H-Bridge Gate-Driver with LIN Transceiver 2.0|
|High Temperature H-Bridge Motor Driver with Serial Input Control|
|BLDC Motor Driver and LIN System Basis Chip with Tjunction up to 150°C|
|BLDC Motor Driver and LIN System Basis Chip with Tjunction up to 200°C|
|ATmega M1 Series 32KB Flash, PSC|
ATmega M1 Series 64KB Flash, PSC
|32-bit AVR Microcontroller, 512KB Flash, 144-pin, automotive-qualified|
32-bit AVR Microcontroller, 512KB Flash, 100-pin, automotive-qualified
32-bit AVR Microcontroller, 512KB Flash, 64-pin, automotive-qualified
8/16-bit AVR Microcontroller, 64KB Flash, 64-pin, automotive-qualified