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The RT7084C2M is an application-specific IC designed for PMSM/BLDC motor applications. This two-in-one ASIC integrates several functional circuits, including a 3-phase motor controller, a 3-phase gate driver, three bootstrap diodes, a 5V LDO, and a buck converter.
The RT7084C2M embeds the ARM 32-bit Cortex-M0 core with peripheral circuits to perform sensorless Field Oriented Control (FOC). In addition, this ASIC provides several system-level peripheral functions, including filters at the ADC input, a communication interface, a thermal sensor, short circuit protection (SCP) and locked-rotor protection, to reduce component count, PCB size and system cost.
Moreover, the RT7084C2M drives external N-Channel MOSFETs in a three half-bridge configuration with built-in bootstrap circuitry.
The RT7084C2M is available in a VQFN-32L 4x4 package. The recommended junction temperature range is -40°C to 125°C, and the ambient temperature range is -40°C to 105°C.

Applications

  • Server Fan
  • Telecom Fan
  • Liquid Pump
Key Spec.
RT7084C2M
Status Active
Number of Phases 3
System Frequency, fSCLK (MHz) 60
ADC resolution (bits) 12
MCU supply voltage, V5V, Min (V) 4.85
MCU supply voltage, V5V, Max (V) 5.15
Features OVP
Package Type VQFN4x4-32
Features
  • Integrates 3-Phase PMSM/BLDC Controller, Gate Driver, Bootstrap Diodes, 5V LDO, and Gate Driver LDO
  • Input Voltage Range: 16V to 80V
  • Sensorless, Sine-Wave Field Oriented Control (FOC)
  • Integrates Filters at ADC Input
  • Protections: SCP, UVLO, Locked-Rotor, and Thermal Detection
  • PMSM/BLDC Motor Controller
      - ARM 32-bit Cortex-M0 CPU, Frequency up to 60MHz
      - Memories Size: 16kB MTP, Internal ROM with Embedded Motor Control Library and 4kB SRAM
      - Power Management: Deep Sleep
      - Communication Interface: I2C and UART
      - Configurable ADC Gain: x1, x4, and x8
      - 5-Channel 12-Bit ADC
         - AD0 to AD3 for Differential Mode Current Sense
         - AD6 to AD8 for System Application
    - 1-Channel Voltage Type 8-bit DAC
  • Gate Driver
      - Floating Channel Designed for Bootstrap Operation
      - Sourcing/Sinking Current: 100mA/200mA
      - Built-In UVLO Functions for All Channels
      - Matched Propagation Delays for All Channels
  • VQFN-32L 4x4 Package
Please confirm with our distributor or sales representative for actual stock status.
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