System Integrated Power Module (sIPM®) for PMSM/BLDC Motor Drive

RT7056 New Product

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The RT7056 is one of Richtek's sIPM® family, which are designed for advanced motor drive applications. This ASIC consists of a PMSM/ BLDC controller, LDOs, the gate driver, bootstrap diodes and MOSFETs. It optimizes these devices specifically designed for PMSM/BLDC motor applications so as to provide great benefits to users with cost-effectiveness, easy design, board space saving and high reliability.

The RT7056 is available in a SOP-23 package.


  • PMSM/BLDC Motor
  • Air Conditioner Indoor/Outdoor Fan
  • Range Hood
  • Ceiling Fan
  • Pedestal Fan
Key Spec.
RT7056A RT7056B
Status Active Active
Drain to Source Breakdown Voltage, BVDSS (V) 600 600
Driver Supply Voltage, Min (V) 10 10
Driver Supply Voltage, Max (V) 16.5 16.5
Max On-Voltage Vce (V) 15 15
Features 100% Duty Cycle;OCP;SCP 100% Duty Cycle;OCP;SCP
Package Type SOP-23 SOP-23
  • Integrated 3-Phase PMSM/BLDC Controller, LDOs, Gate Driver, Bootstrap Diodes and MOSFETs
  • Sensorless and Sinewave Field Oriented Control
  • Optimized Switching Loss and EMI Trade-Offs
  • Built-In Short Circuit, Under-Voltage Lockout (UVLO) and Locked-Rotor Protection
  • Temperature Sensor Embedded
  • Motor Controller
    ► ARM 32-bit Cortex-M0 CPU, Frequency up to 60MHz
    ► Memory Size 16KB MTP, Internal ROM with Embedded Motor Control Library and 4KB SRAM
    ► Normal or Deep Sleep Mode for Power Saving
    ► I2C and UART Communication Interface
    ► 7-Channel 10-bit ADC 
        ♦ AD0 to AD5 are used for Differential Mode Current Sense
        ♦ AD6 to AD9 are used for System Application
    ► 1-Channel 8-bit DAC for Debugging
  • Gate Driver
    ► Built-In UVLO Function
    ► Shoot through Prevention
    ► Matched Propagation Delay
    ► Low On-Resistance
    ► Low Reverse Recovery Charge