3 Phase PMSM/BLDC Motor Controller with Gate Driver


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The RT7075 is the two-in-one IC which consists of 3 phase motor controller and gate driver delicatedy designed for PMSM/BLDC motor applications.

The RT7075 integrates the ARM 32-bit Cortex-M0 core and peripheral circuits to perform a FOC and sensorless motor control. The IC has integrated various system level peripheral functions, such as ADC, DAC, communication interface, SVPWM, watchdog timer, current sensing, undervoltage-lockout (UVLO), over current protection (OCP) and motor lock protection, so as to reduce component count, board space and system cost. Furthermore, the RT7075 drives the external devices N-MOSFETs or IGBTs in a half-bridge configuration with an external bootstrap network up to 600V. A dead time control prevents shoot-through of the external devices. The RT7075 is available in a LQFP-48L 7x7 package.


Key Spec.
Status Active
Number of Phases 3
System Frequency, fSCLK (MHz) 60
ADC resolution (bits) 10
MCU supply voltage, V5V, Min (V) 4.5
MCU supply voltage, V5V, Max (V) 5.5
Driver Supply Voltage, V15V, Min (V) 13
Driver Supply Voltage, V15V, Max (V) 20
Driver Break Down Voltage, VSU/V/W to DVSS (V) 625
Drain to Source Breakdown Voltage, BVDSS (V)
Drain-to-Source On-Resistance, Max RDS_ON (ohm)
Driving Capability, IO+ (mA) 290
Driving Capability, IO- (mA) 600
Sourcing Rg (ohm)
Sinking Rg (ohm)
Package Type LQFP7x7-48
  • Integrated 3 Phase PMSM/BLDC Controller with Gate Driver
  • Sensorless, Sinewave Field Oriented Control
  • Protections : OCP, UVLO and Motor Lock Protection
  • PMSM/BLDC Motor Controller :
    ► ARM 32-Bit Cortex-M0 CPU, Up to 60MHz
    ► Memories Size : 16KB MTP, Internal ROM with Embedded Motor Control Library and 4KB SRAM
    ► Power Management : Normal or Deep Sleep
    ► Programming Soft-Start
    ► Communication Interface : I2C and UART
    ► 10-Channel 10-Bit ADC
    ► 1-Channel Current Type 6-Bit DAC
    ► 1-Channel Voltage Type 8-Bit DAC
  • Gate Driver :
    ► Floating Channel Designed for Bootstrap Operation up to 600V
    ► Sourcing/Sinking Current :
    RT7075A : 290mA/600mA
    ► Matched Propagation Delays for All Channels
    ► VV15V and VVBU/V/W Supply Range : 13V to 20V
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3 Phase PMSM/BLDC Motor Controller with Gate Driver2017/09/12