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12V Motor Controller

Overview

Renesas' 12V small motor system provides an efficient BLDC motor controller, perfect for automotive pumps and fans. Utilizing a low-power automotive MCU, it supports field-oriented control (FOC) with 3-shunt and 1-shunt options and trapezoidal control. The highly integrated MCU ensures a compact, easily mountable design, reducing overall system size and simplifying installation within motor housings.

System Benefits:

  • Speed up development with a complete reference design (circuit diagram, PCB design, characteristic data) and three types of sample control software (FOC 3-shunt/1-shunt, trapezoidal)
  • Cost-efficient with a compact board size (60mm x 56mm) for easy incorporation into motor housings

Block Diagram

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As-251Connector Arrow.161Connector Arrow.191AS251AS251AS25112V Battery.32612V Battery .17812V Battery12V Battery12V Battery12V Battery12V Battery12V Battery12V BatterySheet.130MotorMMGate DriverGate Driver x3Gate Driver x3MOSFETMOSFETMOSFETLDO 1LDOLDOLDO 2LDOLDOCAN/CANFDCAN/CANFDCAN/CANFDVBATVBATVBATU, V, WU, V, WU, V, WShunt ResistorShunt ResistorShuntResistorConnector ArrowConnector Arrow.142Connector Arrow.143Connector Arrow.162Connector Arrow.149Connector Arrow.151Connector Arrow.152Sheet.168Sheet.162Sheet.164Sheet.165Sheet.166Sheet.167Connector LineConnector Line.17012V12V12V5V5V5VConnector Arrow.174Connector double arrowConnector double arrow.176Connector Arrow.179Motor SpeedMotor SpeedMotor Speed1 AAU-Application Accelerator Unit1 AAU-Application Accelerator Unit1 AAU-Application Accelerator UnitOver Current detectionOver Current DetectionOver CurrentDetectionShunt CurrentShunt CurrentShuntCurrentU, V, W Positive, NegativeU, V, W Positive, NegativeU, V, WPositive, NegativeAMPAMP.126AMPAMPMCUMCUMCUMCUAAU1 (PI Controller, Clarke & Park transformations)AAU 1 (PI Controller, Clarke & Park transformations)AAU 1(PI Controller, Clarke & Park transformations)BLDC Motor Control TimerBLDC Motor Control TimerBLDC Motor Control Timer12-bit A/D Converter12-bit A/D Converter12-bit A/D ConverterComparator & D/A ConverterComparator & D/A ConverterComparator & D/A ConverterCAN/CANFD ControllerCAN/CANFD ControllerCAN/CANFDControllerPWM Capture TimerPWM Capture TimerPWM Capture TimerConnector Arrow.187Connector Arrow.192Connector 1Connector 1.194Connector 1.195

LDO

Linear Regulators (LDO)

LDO

Linear Regulators (LDO)

MCU

RL78 Low-Power 8 & 16-Bit MCUs

Gate Driver

Half-Bridge FET Drivers

MOSFET

Power MOSFETs

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