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  3. Monolithic Power Systems — MPQ6539-AEC1 Gate Driver IC

Monolithic Power Systems — MPQ6539-AEC1 Gate Driver IC

 

Monolithic Power Systems

 

Monolithic Power Systems MPQ6539-AEC1 Gate Driver IC

80V, Three-Phase, BLDC Motor Pre-Driver with HS and LS Inputs, AEC-Q100 Qualified

The MPQ6539-AEC1 from Monolithic Power Systems (MPS) is a gate driver IC designed for three-phase brushless DC (BLDC) motor driver applications. It drives three half-bridges with six N-channel power MOSFETs and supports voltages up to 80V.

The device uses a bootstrap capacitor (CBST) to generate the supply voltage for the high-side MOSFET driver. When the output remains high for extended periods, an internal charge pump maintains the high-side gate drive.

Key protection features include configurable over-current protection (OCP), adjustable deadtime (DT) control, under-voltage lockout (UVLO), and thermal shutdown. These features enhance system reliability in automotive and industrial designs.

Housed in a QFN-28 (4mm x 5mm) package with an exposed thermal pad and wettable flanks, the MPQ6539-AEC1 is AEC-Q100 Grade 1 qualified, making it an ideal choice for automotive motor control systems.

 

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Features

  • Supports 80V Operation
  • 100V Maximum Bootstrap (BST) Voltage (VBST)
  • Internal Low-Dropout (LDO) Regulator Supports External NPN for High-Current Driver Requirements/li>
  • Integrated Current-Sense (CS) Amplifier
  • Low-Power Sleep Mode for Battery-Powered Applications
  • Configurable Over-Current Protection (OCP) for External MOSFETs

 

  • Adjustable Dead-Time (DT) Control to Prevent Shoot-Through
  • Thermal Shutdown and Under-Voltage Lockout (UVLO) Protection
  • Fault Indication Output
  • Available in a Thermally Enhanced, Surface-Mount QFN-28 (4mmx5mm) Package with Exposed Pad and Wettable Flanks
  • Available in AEC-Q100 Grade 1

Applications

  • Automotive BLDC Motor Control
  • Industrial Motor Control

 

  • Consumer and Appliance Motors
  • General Three-Phase Motor Control

 

Technical Diagram

 

Evaluation Board


EVQ6539-V-00A

 

 

The EVQ6539-V-00A evaluation board is designed to demonstrate the capabilities of the MPQ6539-AEC1, a three-phase, brushless DC (BLDC) motor pre-driver.

The MPQ6539-AEC1 is capable of driving 3 half-bridges consisting of 6 N-channel power MOSFETs up to 80V. The device uses a bootstrap (BST) capacitor (CBST) to generate a supply voltage for the high-side MOSFET (HS-FET) driver. If the output is held high for an extended period, an internal charge pump maintains the HS-FET.