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Solution Proposal by Toshiba

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Solution Proposal by Toshiba R17 IH Rice Cooker Solution Proposal by Toshiba © 2019 Toshiba Electronic Devices & Storage Corporation Toshiba Electronic Devices & Storage Corporation provides comprehensive device solutions to customers developing new products by applying its thorough understanding of the systems acquired through the analysis of basic product designs. © 2019 Toshiba Electronic Devices & Storage Corporation Block Diagram © 2019 Toshiba Electronic Devices & Storage Corporation IH Rice Cooker Overall block diagram IH Coil Lid Torso Steam Temp. Heater Heater Heater Sensor Gate Discrete DC-DC Driver IGBT Isolation Isolation Isolation Speaker Display Display EEPROM Main Control MCU Control LED MCU Key Input Fan © 2019 Toshiba Electronic Devices & Storage Corporation 4 IH Rice Cooker Detail of IH coil drive unit IH coil drive circuit (using gate driver coupler) Criteria for device selection - Fast switching and low saturation voltage Induction Heater characteristics are required for IGBT. - Use of small package enables to reduce the circuit board area. 8 Main ２ 1 Gate Discrete Control - Rail-to-Rail output, low voltage driving and low Driver IGBT MCU current consumption are required for gate driver to realize low power consumption of the set. - Monitoring sensor, high speed data processing and various heaters control are needed for system control. IH coil drive circuit (using discreteInduction components) Heater Proposals from Toshiba DC-DC 3 - Fast and high efficiency switching are Bipolar 1 Transistor 1 realized Regulator 3 Discrete Silicon N-ch discrete IGBT Bipolar - Higher efficiency is realized 8 Transistor 3 IGBT Main IGBT gate driver coupler 2 Control Bipolar Transistor (Rail-to-Rail output type) MCU - Contribute to reduction of switching loss Bipolar transistor for IGBT gate drive 3 ※ - High efficient processing of a few input and Click the number in the circuit diagram to jump to the detailed description page output data Main control MCU 8 © 2019 Toshiba Electronic Devices & Storage Corporation 5 IH Rice Cooker Detail of fan motor drive / LED drive unit Fan motor drive circuit Criteria for device selection 100 V AC AC-DC DC-DC - Low on-resistance characteristic 5 20 V DC contributes to low loss of the set. MOSFET - Use of small package enables to reduce 8 4 the circuit board area. Main Photocoupler M Fan Motor - Monitoring sensor, high speed data Control Current processing and various heaters control are MCU Detection needed for system control. LED driving circuit 6 Proposals from Toshiba - High current transfer ratio and high 4 100 V AC DC-DC temperature operation makes easy to design. Transistor output photocouplers Rectifier LDO - Low on-resistance realizes a set with low Diode power consumption 5 U-MOS series MOSFET (Trench type) Status LED Display 5 - Small surface mount package suitable for Control MOSFET high density mounting 6 MCU Rectifier diode - High efficient processing of a few input and ※ Click the number in the circuit diagram to jump to the detailed description page output data 8 Main control MCU © 2019 Toshiba Electronic Devices & Storage Corporation 6 IH Rice Cooker Detail of heater control unit Heater control circuit Criteria for device selection - A phototriac coupler is suitable to control Heater AC load. - Monitoring sensor, high speed data processing and various heaters control are 7 8 needed for system control. Photo Triac Main Control coupler MCU Proposals from Toshiba - Efficient control of AC load is realized. Triac output photo couplers 7 - High efficient processing of a few input and output data 8 Main control MCU ※ Click the number in the circuit diagram to jump to the detailed description page © 2019 Toshiba Electronic Devices & Storage Corporation 7 IH Rice Cooker Detail of operation panel unit Operation panel section Criteria for device selection -Driving series connection Hi-current type white LEDs for an LCD back light Key Input Display Driver Display Control MCU 9 LCD Panel LED Driver Proposals from Toshiba -1ch type LED driver is suitable for a small LCD for its back light. 9 Step up type LED driver ※ Click the number in the circuit diagram to jump to the detailed description page © 2019 Toshiba Electronic Devices & Storage Corporation 8 Recommended Devices © 2019 Toshiba Electronic Devices & Storage Corporation Device solutions to address customer needs As described above, in order to design IH Rice Cooker, “Compatibility with AC voltage in each country”, “Low power consumption of set” and “Miniaturization of circuit boards” are important factors. Toshiba’s proposals are based on these three solution perspectives. Compatibility with AC Low power consumption Miniaturization voltage in each country of the set of circuit boards Compatible High High with breakdown efficiency compact voltage ・ Low loss packages © 2019 Toshiba Electronic Devices & Storage Corporation 10 Device solutions to address customer needs High High Compatible efficiency breakdown with ・ voltage compact Low loss packages 1 Silicon N-ch discrete IGBT 2 IGBT gate driver coupler 3 Bipolar transistor for IGBT gate drive 4 Transistor output photocouplers 5 U-MOS series MOSFET (Trench type) 6 Rectifier diode 7 Triac output photo couplers 8 Main control MCU 9 LED driver for white LEDs © 2019 Toshiba Electronic Devices & Storage Corporation 11 High Compatible High efficiency with breakdown ・ compact Silicon N-ch discrete IGBT voltage 1 GT50N324 / GT60PR21 Low loss packages Value provided High speed switching and low saturation voltage characteristics contribute to high efficiency. High speed switching Low saturation voltage Enhancement type Reducing switching loss through high Saturation voltage is kept low while Enhancement type is easy to handle speed operation contributes to higher realizing high speed switching. because no collector current flows when power supply efficiency. no gate voltage is applied. GT60PR21 Line up Characteristics Curves Part number GT50N324 GT60PR21 Package TO-3P(N) VCES (Max) [V] 1000 1100 tf (Typ.) [μs] @IC = 60 A 0.11 0.16 VCE(sat) (Typ.) [V] @IC = 60 A 1.9 2.0 ◆Return to Block Diagram TOP © 2019 Toshiba Electronic Devices & Storage Corporation 12 High Compatible High efficiency with breakdown ・ compact IGBT gate driver coupler voltage 2 TLP577X / TLP575X Low loss packages Value provided Rail-to-rail output enables the system to operate safely and reduce conduction losses. High temperature of 110℃ Rail-to-rail output Small package (ambient) operation TLP577X and TLP575X generate a full- The mounting area of SO6L package is These photocouplers are designed to swing voltage output signal and 50% smaller than that of DIP8. And these operate under severe ambient gate driver coupler comply with contributes to low power consumption. reinforced insulation class of overseas temperature conditions. safety standards. Line up 10% reduction in conduction loss Part number TLP577X series TLP575X series Package SO6L Vcc Iop (Max) [A] ±1 / ±2.5 / ±4 Vo Existing Rail to Rail tpHL , tpLH (Max) [ns] 150 (Vg) BVS (Min) [Vrms] 5000 Topr [°C] -40 to 110 Vg Vcc [V] 10 to 30 15 to 30 IFLH (Max) [mA] 2 4 ◆Return to Block Diagram TOP © 2019 Toshiba Electronic Devices & Storage Corporation 13 High Compatible High efficiency with breakdown ・ compact Bipolar transistor for IGBT gate drive voltage 3 HN4B101J / 102J , TPCP8901 / 8902 Low loss packages Value provided High speed switching characteristics and high hFE performance enable the system to have higher frequencies and lower losses. High speed switching High DC current gain (h ) Compact and thin package operation FE These transistors have h igh speed Maximum rating of collector current and Both PNP and NPN type are mounted on switching characteristic suitable for high DC amplification factor are improved for one small surface mount package to frequency equipment. larger IGBT gate capacity. reduce mounting area. Bipolar transistor for gate drive Line up DC Power Part number HN4B101J HN4B102J TPCP8901 TPCP8902 Supply Package SMV PS-8 Bipolar transistor MOS gate device for gate drive ( Bias Resistor Built-in) Internal structure (Top View) VCEO (PNP/NPN) (Max) [V] -30 / 30 -30 / 30 -50 / 50 -30 / 30 ICP (PNP/NPN) (Max) [A] -5 / 5 -8 / 8 -5 / 5 -8 / 8 ◆Return to Block Diagram TOP © 2019 Toshiba Electronic Devices & Storage Corporation 14 High Compatible High efficiency with breakdown ・ compact Transistor output photocouplers voltage 4 TLP183 / TLP185(SE Low loss packages Value provided High CTR (Current Transfer Ratio) is realized even in low input current range (IF=0.5 mA). High current transfer ratio (I =0.5 mA in low F High temperature of 125℃ operation input current range) Phototransistor and infrared light emitting diode are optically It is designed to operate even under severe ambient coupled. Highly insulated photocouplers realize higher temperature conditions, such as inverter equipment, robots, conversion efficiency than conventional electromagnetic relays machine tools and high-output power supplies. or insulated transformers. High conversion efficiency is realized Line up even in the low input current range Part number TLP183 TLP185(SE 4pin 4pin Package SO6 SO6 BVS (Min) [Vrms] 3750 3750 Topr [°C] -55 to 125 -55 to 110 ◆Return to Block Diagram TOP © 2019 Toshiba Electronic Devices & Storage Corporation 15 High Compatible High efficiency with breakdown ・ compact U-MOS Series MOSFET (Trench Type) voltage 5 SSM3K56MFV / SSM6N56FE Low loss packages Value provided U-MOS series MOSFET contributes to energy saving and miniaturization by improving the trade-off characteristics between
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