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3 Phase PMSM/BLDC Motor Controller with Gate Driver

RT7075A New Product

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The RT7075A is a two-in-one application specific IC which consists of a 3-phase motor controller and a gate driver designed for PMSM/BLDC motor applications.

The RT7075A integrates the ARM 32-bit Cortex-M0 core with peripheral circuits to perform field oriented control (FOC) and sensorless motor control. In additions, system level peripheral functions, such as ADC, DAC, communication interface, SVPWM, watchdog timer, current sensing, undervoltage-lockout (UVLO), short circuit protection(SCP) and locked-rotor protection are integrated so as to reduce component count, PCB size and system cost.

Furthermore, the RT7075A drives external N-Channel MOSFETs in three half-bridge configuration with an external bootstrap network up to 600V.

A dead time control is built-in to prevents shoot-through of the external N-Channel MOSFETs.

The RT7075A is available in LQFP-48L 7x7 package.

Applications

  • PMSM/BLDC Motor
  • Pedestal Fan
  • Ceiling Fan
  • Air Conditioner Indoor/Outdoor Fan
  • Pump
Key Spec.
RT7075A
Status Active
Number of Phases 3
System Frequency (MHz) 60
ADC resolution (bits) 10
MCU supply voltage, Min (V) 4.5
MCU supply voltage, Max (V) 5.5
Driver Supply Voltage, Min (V) 13
Driver Supply Voltage, Max (V) 20
Driver Break Down Voltage (V) 625
Driving Capability, IO+ (mA) 290
Driving Capability, IO- (mA) 600
Features I2C;OCP;SCP;UVLO
Package Type LQFP7x7-48
Features
  • Integrated 3 Phase PMSM/BLDC Controller with Gate Driver
  • Sensorless, Sinewave Field Oriented Control (FOC)
  • Protections : SCP, UVLO and Locked-Rotor 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 : 290mA/600mA
    ► Matched Propagation Delays for All Channels
    ► VV15V and VVBU/V/W Supply Range : 13V to 20V
  • RT7075AGPL with Firmware Code UXYYY Certified by UL for IEC-60730-1 Class B Compliance with Recognized Marking :
  • UL Certified No. E478780 (UL60730) 
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