SLES267C August 2011  – March 2016 DRV8302

PRODUCTION DATA. 

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Pin Configuration and Functions
  6. Specifications
    1. 6.1Absolute Maximum Ratings
    2. 6.2ESD Ratings
    3. 6.3Recommended Operating Conditions
    4. 6.4Thermal Information
    5. 6.5Electrical Characteristics
    6. 6.6Gate Timing and Protection Characteristics
    7. 6.7Current Shunt Amplifier Characteristics
    8. 6.8Buck Converter Characteristics
    9. 6.9Typical Characteristics
  7. Detailed Description
    1. 7.1Overview
    2. 7.2Function Block Diagram
    3. 7.3Feature Description
      1. 7.3.1Three-Phase Gate Driver
      2. 7.3.2Current Shunt Amplifiers
      3. 7.3.3Buck Converter
      4. 7.3.4Protection Features
        1. 7.3.4.1Overcurrent Protection (OCP) and Reporting
          1. 7.3.4.1.1Current Limit Mode (M_OC = LOW)
          2. 7.3.4.1.2OC Latch Shutdown Mode
        2. 7.3.4.2OC_ADJ
        3. 7.3.4.3Undervoltage Protection (UVLO)
        4. 7.3.4.4Overvoltage Protection (GVDD_OV)
        5. 7.3.4.5Overtemperature Protection
        6. 7.3.4.6Fault and Protection Handling
    4. 7.4Device Functional Modes
      1. 7.4.1EN_GATE
      2. 7.4.2DTC
  8. Application and Implementation
    1. 8.1Application Information
      1. 8.1.1Gate Driver Power Up Sequencing Errdata
    2. 8.2Typical Application
      1. 8.2.1Design Requirements
      2. 8.2.2Detailed Design Procedure
        1. 8.2.2.1Gate Drive Average Current Load
        2. 8.2.2.2Overcurrent Protection Setup
        3. 8.2.2.3Sense Amplifier Setup
      3. 8.2.3Application Curves
  9. Power Supply Recommendations
    1. 9.1Bulk Capacitance
  10. 10Layout
    1. 10.1Layout Guidelines
    2. 10.2Layout Example
  11. 11Device and Documentation Support
    1. 11.1Documentation Support
      1. 11.1.1Related Documentation
    2. 11.2Community Resources
    3. 11.3Trademarks
    4. 11.4Electrostatic Discharge Caution
    5. 11.5Glossary
  12. 12Mechanical, Packaging, and Orderable Information

1 Features

  • 8-V to 60-V Operating Supply Voltage Range
  • 1.7-A Source and 2.3-A Sink Gate Drive Current Capability
  • Bootstrap Gate Driver With 100% Duty Cycle Support
  • 6 or 3 PWM Input Modes
  • Dual Integrated Current Shunt Amplifiers With Adjustable Gain and Offset
  • 3.3-V and 5-V Interface Support
  • Hardware Control Interface
  • Protection Features:
    • Programmable Dead Time Control (DTC)
    • Programmable Overcurrent Protection (OCP)
    • PVDD and GVDD Undervoltage Lockout (UVLO)
    • GVDD Overvoltage Lockout (OVLO)
    • Overtemperature Warning/Shutdown (OTW/OTS)
    • Reported through nFAULT and nOCTW pins

2 Applications

  • 3-Phase BLDC and PMSM Motors
  • CPAP and Pumps
  • E-Bikes
  • Power Tools
  • Robotics and RC Toys
  • Industrial Automation

3 Description

The DRV8302 is a gate driver IC for three phase motor drive applications. It provides three half bridge drivers, each capable of driving two N-channel MOSFETs. The device supports up to 1.7-A source and 2.3-A peak current capability. The DRV8302 can operate off of a single power supply with a wide range from 8-V to 60-V. It uses a bootstrap gate driver architecture with trickle charge circuitry to support 100% duty cycle. The DRV8302 uses automatic hand shaking when the high side or low side MOSFET is switching to prevent current shoot through. Integrated VDS sensing of the high and low side MOSFETs is used to protect the external power stage against overcurrent conditions.

The DRV8303 includes two current shunt amplifiers for accurate current measurement. The amplifiers support bi-directional current sensing and provide and adjustable output offset up to 3 V.

The DRV8302 also includes an integrated switching mode buck converter with adjustable output and switching frequency. The buck converter can provide up to 1.5 A to support MCU or additional system power needs.

A hardware interface allows for configuring various device parameters including dead time, overcurrent, PWM mode, and amplifier settings. Error conditions are reported through the nFAULT and nOCTW pins.

Device Information(1)

PART NUMBERPACKAGEBODY SIZE (NOM)
DRV8302HTSSOP (56)14.00 mm × 6.10 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Simplified Schematic

DRV8302 simplified_schem_2_sles267.gif