AC Drive is a variable-speed controller that precisely controls the shaft rotation speed, typically, an induction motor or synchronous motor. They are widely used in industrial machinery such as production line conveyors, cranes, elevators, fans, pumps, and compressors. As the need to save energy grows worldwide, there is widespread demand for an inverter control to boost energy efficiency. The performance and multifunctionality of inverters continue to improve. This is due to advances in simple controller functions, interfaces such as field networks of various types and USB, and display panels enhancing usability. At the same time, there is growing demand in emerging economies for inverters that are cheaper and more compact.

In response to these varied requirements, Renesas offers a broad lineup of products that provide scalability. The RX Family of 32-bit microcontrollers (MCUs) provides an array of on-chip peripheral functions such as multifunction timers and A/D converters optimized for inverter control, Ethernet and USB interfaces, and serial interfaces. Also available with analog and power devices suitable for inverter applications.

AC Drive Block Diagram

Related Products

Microcontrollers and Microprocessors

Semiconductor Device Recommended Products Features
Control MCU RX72M Operating frequency: 240MHz
Operating voltage: 3.3V
On-chip memory (Max.): 4MB Flash, 1MB RAM, 32KB Data Flash
Motor control and EtherCAT communication in one chip
RX72N Operating frequency (MHz): 240
Operating voltage (V): 2.7 to 3.6
On-chip memory (max.):4MB Flash, 1MB RAM, 32KB Data Flash
Real-time control and networking of equipment are realized with a single chip with 4MB flash memory capable of read operation at 120MHz, 1MB of SRAM and 182 general-purpose I/O ports.
RX72T Operating frequency: 200MHz
Operating voltage: 2.7V to 5.5V
On-chip memory (Max.): 1MB Flash, 128KB RAM, 32KB Data Flash
High-performance edition of RX66T: 200MHz operation, RXv3 register bank save function, arithmetic unit for trigonometric functions
RX66T Operating frequency: 160MHz
Operating voltage: 2.7V to 5.5V
On-chip memory (Max.): 512KB Flash, 128KB RAM, 32KB Data Flash
High-performance RXv3 core and various functions for motor control
RA6T1 Operating frequency (MHz): 120
Operating voltage (V): 2.7 to 3.6
On-chip memory (max.):512KB Flash, 64KB RAM, 8KB Data Flash
Arm Cortex-M4 core and various function for motor control
RX24T
RX24U
Operating frequency: 80MHz
Operating voltage: 2.7V to 5.5V
On-chip memory (Max.): 512KB Flash, 32KB RAM, 8KB Data Flash
Compact form factor with necessary features to control motors of various supply voltages
Display/Option MCU RX65N
RX651
Operating frequency: 120MHz
Operating voltage: 3.3V
On-chip memory (Max.): 1MB Flash, 256KB RAM
High-performance and low power consumption
Enhanced connectivity and encryption feature to meet various needs
RA6M3 Operating frequency (MHz): 120
Operating voltage (V): 2.7 to 3.6
On-chip memory (max.):2MB Flash, 640KB RAM, 64KB Data Flash
Arm Cortex-M4 core and offers TFT controller with 2D accelerator and JPEG decoder.
Flexible Software Package (FSP), built on FreeRTOS is expandable to use other RTOSes and middleware.
RX113 Operating frequency: 32MHz
Operating voltage: 3.3V
On-chip memory (Max.): 512KB Flash, 64KB RAM, 8KB Data Flash
Suitable for various user interfaces such as LCD, touch sensor, USB etc.

Industrial Communication Chip

Semiconductor Device Recommended Products Features
Industrial Communication Controller
Multi-Protocol
R-IN32M3-CL/EC Support CC-Link IE, EtherCAT, EtherNet/IP etc. with one chip
R-IN32M4-CL2 Support CC-Link IE field (intelligent device)
Two Gigabit ports with built-in PHY
RZ/N1L Easy slave implementation with R-IN Engine and specific hardware
Industrial Communication Controller
Dedicated Protocol
RX72M EtherCAT slave controller integrated into the RX Family
TPS-1 Best real-time performance, fully meets PROFINET IRT standards
EC-1 Optimized for EtherCAT applications
Provides solutions with high reliability

Memory

Semiconductor Device Recommended Products Features
SRAM RMLV0408E Series
RMLV0416E Series
Memory size: 4Mb
Access time (Max.): 45ns
Standby current (Typ.): 0.4μA
Renesas’ original memory cell technology is more than 500 times as resistant to software errors as full CMOS memory cells, providing high reliability for the industrial market
RMLV0808B Series
RMLV0816B Series
Memory size: 8Mb
Access time (Max.): 45ns
Standby current (Typ.): 0.4μA
Renesas’ original memory cell technology is more than 500 times as resistant to software errors as full CMOS memory cells, providing high reliability for the industrial market
RMLV1616A Series Memory Size: 16Mb
Access Time (Max.): 55ns
Standby Current (Typ.): 0.5μA
Renesas’ original memory cell technology is more than 500 times as resistant to software errors as full CMOS memory cells, providing high reliability for the industrial market
RMWV3216A Series Memory size: 32Mb
Access time (Max.): 55ns
Standby current (Typ.): 1.0μA
Renesas’ original memory cell technology is more than 500 times as resistant to software errors as full CMOS memory cells, providing high reliability for the industrial market
RMWV6416A Series Memory size: 64Mb
Access time (Max.): 55ns
Standby current (Typ.): 1.2μA
Renesas's original memory cell technology is more than 500 times as resistant to software errors as full CMOS memory cells, providing the high reliability for the industrial market.

Analog and Power Devices

Semiconductor Device Recommended Products Features
DC/DC RAA23015x Main specifications: Input voltage range: 7V to 28V, output voltage: 0.8V to 6V, Max. output current: 3A Auto PFM (light load, high efficiency) mode
Simplify power supply design and shorten turnaround time (TAT) in kits with Renesas microcontrollers
RAA23023x Main specifications: Input voltage range: 4.5V to 16V, output voltage: 0.8V to 6V, Max. output current: 3A Auto PFM (light load, high efficiency) mode dual-channel DC/DC
Simplify power supply design and shorten TAT in kits with Renesas microcontrollers
RAA212422 Main specification: Dual synchronous rectification DC/DC regulator
 CH1: Vin = 3 to 40V, 1.1A output
 CH2: Vin = 2.7 to 5.5V, 1.5A output
Compact package: 3mm x 6mm TDFN
Simplyfy power supply design and shortening TAT in kits with Renesas microcontrollers.
Isolation Amplifier PS8352A
PS9352A
Main specifications: 1% precision, analog output, SDIP package; 1% precision, digital output, SDIP package
Support for high temperature operation up to 110 °C
IGBT/IPM Drive Photocoupler PS9402/PS9031 PS9009/PS9905 Main specifications: IGBT protection circuit/2.5A output small package IPM drive/690V insolation
Ability to select from wide range of functions to match IGBTs used
High-Speed Communication Photocoupler

Tr-Output Photocoupler
PS9001 Main specifications: 10Mbps, compact, high voltage tolerance 690V insolation compact, high temperature tolerance
Compact and high voltage tolerance
PS8902/PS9924
PS2381