Overview

The MCU lineup of Renesas includes the RX23T Group with built-in floating-point unit (FPU) suitable for vector control, and the RL78/G14 Group capable of vector control even at low pin counts, which are suitable for inverter control in refrigerator applications. Their on-chip features allow the design of efficient motor drive solutions which allow refrigerators to be made more eco-friendly. For refrigerator system control, the RL78/G13 Group, the RX230 Group, and the RX231 Group are ideal product groups in that they incorporate a variety of A/D converters to allow precise control of the internal temperature. In addition, the RX130 Group MCU is designed to implement a touch panel solution which allows the appliance manufacturer to provide flat panel interfaces free of protrusions or indentations, thus improving cleaning and maintenance.

Refridgerator (High-End)

System Block Diagram

System Block Diagram

Recommended Products
Block Semiconductor Device Recommended Product Name Features, etc.
System control System control, operation MCU RX230 Group
RX231 Group
5 V operation, Multi-channel A/D input、Built-in safety function
RL78/G13 Group 5 V operation, small package, abundant lineup
Compressor control Compressor control MCU RX23T Group Built-in FPU
RL78/G14 Group Three-phase PWM timer *1, small package, abundant lineup
RL78/G1F Group
Touch key Touch key MCU RX130 Group Touch key MCU
Sensor output Op-amp READ2302GSP Full range Input/output , High slew rate
μPC4742, μPC4744 High slew rate
Heater TRIAC BCR1AM-12A
BCR08AM-14A
BCR08DS-14A
 
PFC power supply MOSFET RJK60xx Series 500 V, 600 V tolerance
PFC IC R2A20113A
R2A20133D
Critical conduction mode single
MCU I/F in control unit Photocoupler (standard) PS23xx Series
PS27xx Series
PS28xx Series
High isolation voltage (5kVr.m.s.), 4p-LSOP, Ta=115°C
High isolation voltage (3.75kVr.m.s.), 4p-SOP, Ta=110°C
High isolation voltage (2.5kVr.m.s.), 4p-SSOP, Ta=110°C
Photocoupler
(high-speed)
PS91xx Series
(SOP)
PS93xx Series
(SDIP)
PS98xx Series
(Small SOP)
PS99xx Series
(LSDIP)
Digital output   
~15Mbps
Low supply current
TRIAC control Photocoupler (standard) PS23xx Series
PS27xx Series
PS28xx Series
High isolation voltage (5kVr.m.s.), 4p-LSOP, Ta=115°C
High isolation voltage (3.75kVr.m.s.), 4p-SOP, Ta=110°C
High isolation voltage (2.5kVr.m.s.), 4p-SSOP, Ta=110°C

*1 PWM: Pulse Width Modulation

Related Software
Name Document No.
M3S-S2-Tiny sound playback system * -

*: Please contact your sales representative or contact us directly.

Related Boards
Name Part No.
R2A20113A evaluation board * -
24V Motor Control Evaluation System for RX23T RTK0EM0006S01212BJ

*:Please contact your sales representative or contact us directly.