SLES256E May   2010  – December 2014 DRV8312 , DRV8332

PRODUCTION DATA.  

  1. Features
  2. Applications
  3. Description
  4. Simplified Application Diagram
  5. Revision History
  6. Pin Configuration and Functions
  7. Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Dissipation Ratings
    6. 7.6 Power Deratings (DRV8312)
    7. 7.7 Electrical Characteristics
    8. 7.8 Typical Characteristics
  8. Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Error Reporting
      2. 8.3.2 Device Protection System
        1. 8.3.2.1 Bootstrap Capacitor Undervoltage Protection
          1. 8.3.2.1.1 Overcurrent (OC) Protection
        2. 8.3.2.2 Overtemperature Protection
        3. 8.3.2.3 Undervoltage Protection (UVP) and Power-On Reset (POR)
        4. 8.3.2.4 Device Reset
    4. 8.4 Device Functional Modes
      1. 8.4.1 Different Operational Modes
  9. Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 Three-Phase Operation
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
          1. 9.2.1.2.1 Motor Voltage
          2. 9.2.1.2.2 Current Requirement of 12 V Power Supply
          3. 9.2.1.2.3 Voltage of Decoupling Capacitor
          4. 9.2.1.2.4 Overcurrent Threshold
          5. 9.2.1.2.5 Sense Resistor
          6. 9.2.1.2.6 Output Inductor Selection
        3. 9.2.1.3 Application Curves
      2. 9.2.2 DRV8312 Application Diagram for Three-Phase Operation
      3. 9.2.3 Control Signal Logic With Conventional 6 PWM Input Scheme
      4. 9.2.4 Hall Sensor Control With 6 Steps Trapezoidal Scheme
      5. 9.2.5 Sensorless Control With 6 Steps Trapezoidal Scheme
  10. 10Power Supply Recommendations
    1. 10.1 Bulk Capacitance
    2. 10.2 System Power-Up and Power-Down Sequence
      1. 10.2.1 Powering Up
      2. 10.2.2 Powering Down
    3. 10.3 System Design Recommendations
      1. 10.3.1 VREG Pin
      2. 10.3.2 VDD Pin
      3. 10.3.3 OTW Pin
      4. 10.3.4 FAULT Pin
      5. 10.3.5 OC_ADJ Pin
      6. 10.3.6 PWM_X and RESET_X Pins
      7. 10.3.7 Mode Select Pins
  11. 11Layout
    1. 11.1 Layout Guidelines
      1. 11.1.1 PCB Material Recommendation
      2. 11.1.2 Ground Plane
      3. 11.1.3 Decoupling Capacitor
      4. 11.1.4 AGND
    2. 11.2 Layout Example
      1. 11.2.1 Current Shunt Resistor
    3. 11.3 Thermal Considerations
      1. 11.3.1 Thermal Via Design Recommendation
  12. 12Device and Documentation Support
    1. 12.1 Related Links
    2. 12.2 Trademarks
    3. 12.3 Electrostatic Discharge Caution
    4. 12.4 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

封装选项

请参考 PDF 数据表获取器件具体的封装图。

机械数据 (封装 | 引脚)
  • DDW|44
散热焊盘机械数据 (封装 | 引脚)
订购信息

1 Features

  • High-Efficiency Power Stage (up to 97%) With Low RDS(on) MOSFETs (80 mΩ at TJ = 25°C)
  • Operating Supply Voltage up to 50 V
    (70-A Absolute Maximum)
  • DRV8312 (Power Pad Down): up to 3.5-A Continuous Phase Current (6.5-A Peak)
  • DRV8332 (Power Pad Up): up to 8-A Continuous Phase Current (13-A Peak)
  • Independent Control of Three Phases
  • PWM Operating Frequency up to 500 kHz
  • Integrated Self-Protection Circuits Including Undervoltage, Overtemperature, Overload, and Short Circuit
  • Programmable Cycle-by-Cycle Current Limit Protection
  • Independent Supply and Ground Pins for Each Half Bridge
  • Intelligent Gate Drive and Cross Conduction Prevention
  • No External Snubber or Schottky Diode is Required

2 Applications

  • BLDC Motors
  • Three-Phase Permanent Magnet Synchronous Motors
  • Inverters
  • Half Bridge Drivers
  • Robotic Control Systems

3 Description

The DRV83x2 are high-performance, integrated three-phase motor drivers with an advanced protection system.

Because of the low RDS(on) of the power MOSFETs and intelligent gate drive design, the efficiency of these motor drivers can be up to 97%. This high efficiency the use of smaller power supplies and heatsinks, and the devices are good candidates for energy-efficient applications.

The DRV83x2 require two power supplies, one at 12 V for GVDD and VDD, and another up to 50 V for PVDD. The DRV83x2 can operate at up to 500-kHz switching frequency while still maintaining precise control and high efficiency. The devices also have an innovative protection system safeguarding the device against a wide range of fault conditions that could damage the system. These safeguards are short-circuit protection, overcurrent protection, undervoltage protection, and two-stage thermal protection. The DRV83x2 have a current-limiting circuit that prevents device shutdown during load transients such as motor start-up. A programmable overcurrent detector allows adjustable current limit and protection level to meet different motor requirements.

The DRV83x2 have unique independent supply and ground pins for each half-bridge. These pins make it possible to provide current measurement through external shunt resistor and support half bridge drivers with different power supply voltage requirements.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
DRV8312 HTSSOP (44) 14.00 mm × 6.10 mm
DRV8332 HSSOP (36) 15.90 mm × 11.00 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

4 Simplified Application Diagram

DRV8312 DRV8332 simp_app_les256.gif