Renesas Electronics Corporation
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Vehicle Window Control with Anti-Pinch Safety

Overview

This vehicle window control design integrates an MCU, buttons, DC motor, power supply, and power devices to offer comprehensive window control. It features motor forward and reverse control, window anti-pinch, and more, providing a sensitive response, fast speed, and easy operation. The system meets the automotive industry's demand for sophisticated, safety-compliant window control systems, aligning with global trends for enhanced vehicle safety and user comfort.

System Benefits:

  • Simple and effective control of the window motor ensures smooth and precise operation.
  • The current ripple algorithm supports the anti-pinch function, significantly improving passenger safety and meeting modern automotive safety standards.
  • CAN and LIN modules for automotive interfaces are integrated into the MCU, facilitating seamless integration with vehicle communication networks and reducing overall system complexity.
  • Automotive-grade high voltage, high frequency, half-bridge driver, and high current switching MOSFET.
  • Vehicle window control

Block Diagram

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CN602 CN602 CN602 CN602 MCU MCU MCU Back Light Back Light Back Light Lock Button Lock Button Lock Button LIN Transceiver LIN Transceiver LIN Transceiver CAN Transceiver CAN Transceiver CAN Transceiver Main Window Button (rise/auto rise/fall/auto fall) Main Window Button (rise/auto rise/fall/auto fall) Main WindowButton (rise/auto rise/fall/auto fall) Secondary Window Buttons x3 Secondary Window Buttons x3 SecondaryWindowButtons x3 PWM 1 PWM PWM CMP CMP CMP 10-bit ADC 10-bit ADC 10-bit ADC LIN LIN LIN CAN CAN CAN GPIO 2 GPIO GPIO PWM 2 PWM PWM GPIO 1 GPIO GPIO Connector Arrow Connector Arrow.133 Connector Arrow.135 Connector Arrow.137 Connector Arrow.138 Connector Arrow.139 Connector Arrow.140 Connector Line Connector Line.144 Sheet.145 Sheet.146 Battery.328 Sheet.148 Sheet.149 Sheet.150 Sheet.151 12V Battery 12V Battery 12V Battery Connector Line.410 Ground.171 Sheet.160 Sheet.161 Sheet.162 Sheet.163 Sheet.166 Sheet.167 Connector 1 Connector 1.169 Sheet.170 Sheet.171 Connector 1.172 Connector 1.173 Sheet.182 Communication Lines 1 4 4 4 Sheet.185 Connector Arrow.186 Communication Lines 1.188 3 3 3 Sheet.190 Communication Lines 1.191 2 2 2 Sheet.193 Connector Arrow.197 Communication Lines 1.198 4 4 4 Sheet.200 Connector Arrow.205 Communication Lines 1.206 4 4 4 Sheet.208 Motor Sheet.210 Motor M M Connector Arrow.214 Connector Arrow.215 Connector 1.216 Connector Arrow.227 CAN Bus CAN Bus CAN Bus Connector Arrow.229 Window #2 Window #2 Window #2 Window #3 Window #3 Window #3 Window #4 Window #4 Window #4 Main Window Main Window Main Window Sheet.241 Sheet.242 Sheet.243 Sheet.246 Sheet.247 Connector 1.248 Connector 1.249 Sheet.250 Sheet.251 Connector 1.252 Connector 1.253 Sheet.254 Sheet.255 Connector 1.256 Connector 1.257 LDO LDO LDO Half-Bridge Driver x2 Half-Bridge Driver x2 Half-BridgeDriver x2 MOSFET x2 1 MOSFET x2 MOSFET x2 MOSFET x2 2 MOSFET x2 MOSFET x2 OPA OPA OPA 5V/150mAmax 5V/150mAmax 5V/150mAmax Communication Lines 2.259 Communication Lines B.795 8 8 8 Motor Current Motor Current Motor Current Main Window Motor Main Window Motor Main WindowMotor Current ripple Current ripple Current ripple Secondary Window Secondary Window Secondary Window Note: Secondary Window controls are almost the same as main window, one button only. Note: Secondary Window controls are almost the same as main w... Note: Secondary Window controls are almost the same as main window, one button only. Connector Arrow.271 Communication Lines 1.272 3 3 3 Sheet.274 Connector 1.275 Connector 1.276

LDO

Linear Regulators (LDO)

Half-Bridge Driver x2

Half-Bridge FET Drivers

OPA

General-purpose Op Amps

MOSFET x2

Power MOSFETs

MOSFET x2

Power MOSFETs

MCU

RL78 Low-Power 8 & 16-Bit MCUs