The RL78/L13 Group MCUs from Renesas have an IH control timer (timer KB2) function with PWM suitable for IH control. This is designed to enable IH control using a simpler circuit configuration. IGBTs are used for IH drive, and TRIACs are used for steam drive, body heater drive, cover heater drive, and fan motor drive. In addition, there is a trend toward stricter restrictions on harmonic components in the input current of electrical products. Renesas also has a lineup of PFC power supply IC products (Power Factor Correction ICs) that are effective in suppressing harmonic components.

IH Rice Cooker (High-End)

System Block Diagram

System Block Diagram

Recommended Products
Block Semiconductor Device Recommended Product Name Features, etc.
Control MCU MCU RL78/L13 Group 16-bit MCU, LCD Control, IH Control
Touch key MCU MCU RX130 Group 32-bit MCU, Capacitive Touch, Vcc = 1.8 ~ 5.5V
Audio playback MCU MCU RL78 Family 16bit-CPU
Heater control TRIAC BCR08AM-14A
Sensor CMOS Op-amp READ2302GSP Full range Input/output , High slew rate
μPC4742, μPC4744 High slew rate
IGBT Gate Driver Photocoupler
(IGBT drive)
PS93xx Series
PS94xx Series
PS95xx Series
PS99xx Series
High isolation voltage (5kV~7.5kVr.m.s.)
0.6~2.5A output
High CMR (CMR≧50kV/μs)
TRIAC Control Photocoupler
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
Related Software
Name Document No.
M3S-S2-Tiny sound playback system * -

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