Inverter Board Specification; Functions; Inverter Control Circuit Block - Renesas RX200 Series User Manual

Renesas RX Family MCK-RX26T User's Manual

Inverter Board Specification

5.
This section describes inverter board specification.

5.1 Functions

5.1.1

Inverter control circuit block

The inverter board has the inverter control circuit block which controls the motor with 6 POWER MOSFETs.
POWER MOSFET is controlled with 6-phase timer output of MCU.
The inverter control circuit block outputs DC bus voltage, U, V and W phase voltage and shunt current to the
connectors (CN3, CN4). By inputting these output voltages to A/D of MCU on the CPU card, analog values of
the voltage and the shunt current of each phase can be measured. Refer to
5.1.2 for the current detection and refer to 5.1.4 for the voltage detection, respectively. Also function to detect
overcurrent from the input current is available. Refer to 5.1.3 for details.
An illustration of the inverter control circuit block is shown in Figure 5-1 . In the actual circuit, some inputs on
the A/D pins are via voltage dividers and offsets and so on. Refer to the circuit diagram for details.
Figure 5-1 Illustration of inverter control circuit block
R12UZ0111EJ0100 Rev 1.00 Page 20 of 38
November 15, 2022