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Electronic Power Steering System

Electronic Power Steering System

EPS systems are finding widespread use in automobiles to improve mileage. Here are block diagrams of EPS systems that use power MOSFETs for motor drivers, power supply and motor relay applications in EPS systems.

System Block Diagram


EPS Control Evaluation Board


Reference Model for EPS


Recommended Products

Block Type Package Part Number Polarity/Generation Feature
Motor control Reverse battery protection IPD SSOP24 TPD7210F IPD process 3 Phase Full Bridge Nch, MOSFET Gate drive.
PS8 TPD7104AF BiCD process 1 ch Nch MOSFET Gate drive.
MOSFET DPAK+ TK65S04N1L Nch/VIII 40 V/65 A/4.3 mΩ max
TK100S04N1L Nch/VIII 40 V/100 A/2.3 mΩ max
TK1R4S04PB Nch/IX 40 V/120 A/1.35 mΩ max
TJ40S04M3L Pch/VI -40 V/-40 A/9.1 mΩ max
TJ60S04M3L Pch/VI -40 V/-60 A/6.3 mΩ max
TJ80S04M3L Pch/VI -40 V/-80 A/5.2 mΩ max
SOP Advance TPCA8085 Nch/IV 40 V/40 A/5.7 mΩ max
TPCA8122 Pch/VI -40 V/-60 A/5 mΩ max
TPCA8124 Pch/VI -40 V/-35 A/10.5 mΩ max
Motor Motor control MCU LQFP100 TMPM351F10TFG ARM Cortex-M3 (144 MHz) PMD, CAN, ADC, Topr = -40 to 105℃
Pre-driver MCD LQFP64 TB9081FG** BiCD process 5-channel safety relays, Selectable operation on fault detection, Initial diagnosis of monitoring circuitry
HTSSOP48 TB9052FNG 1-channel H-bridge pre-driver (external N-channel FET), Built-in motor current detection circuit
LQEP48 TB9057FG 1-channel H-bridge pre-driver (external N-channel FET), Built-in motor current detection circuit, Built-in motor rotational direction detection circuit
Power Supply Voltage Regulators SSOP20 TB9004FNG BiCD process Multiple outputs (external transistors required) LDO1 (3.4/2.5/1.5V), LDO2 (5V), Watchdog timer, Topr: -40 to 125℃
SSOP20 TB9005FNG Single output (external transistors required), LDO (5 V), Watchdog timer, Topr: -40 to 125℃
HTSSOP16 TB9021FNG Single output (with integrated output transistors), LDO (5 V, 200 mA), Window-Watchdog timer, Topr: -40 to 125℃
HQFN52 TB9042FTG Multiple outputs (with integrated output transistors), DCDC1 (1.2/1.5 V), LDO1 to 2 (5 V), LDO3 (5/3.3 V), Window-Watchdog timer, Topr: -40 to 125℃
HTSSOP TB9044FNG Multiple outputs (with integrated output transistors), LDO1 to 4 (5 V), Window-Watchdog timer, Topr: -40 to 125℃
Bip Tr New PW-Mold TTA005 NPN -50 V/ -5 A/hFE 200 min

**: Under Development

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·Before creating and producing designs and using, customers must also refer to and comply with the latest versions of all relevant TOSHIBA information and the instructions for the application that Product will be used with or for.