SLES242G December   2009  – December 2014 DRV8412 , DRV8432

PRODUCTION DATA.  

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Pin Configuration and Functions
  6. Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Package Heat Dissipation Ratings
    6. 6.6 Package Power Deratings (DRV8412)
    7. 6.7 Electrical Characteristics
    8. 6.8 Typical Characteristics
  7. Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Error Reporting
      2. 7.3.2 Device Protection System
        1. 7.3.2.1 Bootstrap Capacitor Undervoltage Protection
        2. 7.3.2.2 Overcurrent (OC) Protection
        3. 7.3.2.3 Overtemperature Protection
        4. 7.3.2.4 Undervoltage Protection (UVP) and Power-On Reset (POR)
      3. 7.3.3 Device Reset
    4. 7.4 Device Functional Modes
  8. Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 Full Bridge Mode Operation
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
          1. 8.2.1.2.1 Motor Voltage
          2. 8.2.1.2.2 Current Requirement of 12-V Power Supply
          3. 8.2.1.2.3 Voltage of Decoupling Capacitor
          4. 8.2.1.2.4 Overcurrent Threshold
          5. 8.2.1.2.5 Sense Resistor
        3. 8.2.1.3 Application Curves
      2. 8.2.2 Parallel Full Bridge Mode Operation
      3. 8.2.3 Stepper Motor Operation
      4. 8.2.4 TEC Driver
      5. 8.2.5 LED Lighting Driver
  9. Power Supply Recommendations
    1. 9.1 Bulk Capacitance
    2. 9.2 Power Supplies
    3. 9.3 System Power-Up and Power-Down Sequence
      1. 9.3.1 Powering Up
      2. 9.3.2 Powering Down
    4. 9.4 System Design Recommendations
      1. 9.4.1 VREG Pin
      2. 9.4.2 VDD Pin
      3. 9.4.3 OTW Pin
      4. 9.4.4 Mode Select Pin
      5. 9.4.5 Parallel Mode Operation
      6. 9.4.6 TEC Driver Application
  10. 10Layout
    1. 10.1 Layout Guidelines
      1. 10.1.1 PCB Material Recommendation
      2. 10.1.2 Ground Plane
      3. 10.1.3 Decoupling Capacitor
      4. 10.1.4 AGND
    2. 10.2 Layout Example
      1. 10.2.1 Current Shunt Resistor
    3. 10.3 Thermal Considerations
      1. 10.3.1 DRV8412 Thermal Via Design Recommendation
  11. 11Device and Documentation Support
    1. 11.1 Related Links
    2. 11.2 Trademarks
    3. 11.3 Electrostatic Discharge Caution
    4. 11.4 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

パッケージ・オプション

メカニカル・データ(パッケージ|ピン)
  • DKD|36
発注情報

1 Features

  • High-Efficiency Power Stage (up to 97%) With Low RDS(on) MOSFETs (110 mΩ at TJ = 25°C)
  • Operating Supply Voltage up to 52 V
  • DRV8412 (Power Pad Down): up to 2 × 3-A Continuous Output Current (2 × 6-A Peak) in Dual Full-Bridge Mode or 6-A Continuous Current in Parallel Mode (12-A Peak)
  • DRV8432 (Power Pad Up): up to 2 × 7-A Continuous Output Current (2 × 12-A Peak) in Dual Full-Bridge Mode or 14-A Continuous Current in Parallel Mode (24-A Peak)
  • 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

  • Brushed DC and Stepper Motors
  • Three-Phase Permanent Magnet Synchronous Motors
  • Robotic and Haptic Control System
  • Actuators and Pumps
  • Precision Instruments
  • TEC Drivers
  • LED Lighting Drivers

3 Description

The DRV841x2 are high-performance, integrated dual full-bridge motor driver with an advanced protection system.

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

The DRV841x2 requires two power supplies, one at 12 V for GVDD and VDD, and another up to 50 V for PVDD. The DRV841x2 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 DRV841x2 has 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 DRV841x2 has 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 multiple motors with different power supply voltage requirements.

Device Information(1)

PART NUMBERPACKAGEBODY SIZE (NOM)
DRV8412HTSSOP (44)14.00 mm x 6.10 mm
DRV8432HSSOP (36)15.90 mm x 11.00 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Simplified Application Diagram

DRV8412 DRV8432 fig7_les242.gif

4 Revision History

Changes from F Revision (January 2014) to G Revision

  • Added ESD Ratingstable, Feature Description section, Device Functional Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and Mechanical, Packaging, and Orderable Information section Go

Changes from E Revision (October 2013) to F Revision

  • Changed GND_A, GND_B, GND_C, and GND_D pins description to remove text "requires close decoupling capacitor to ground"Go
  • Changed the tON_MIN description to include "for charging the Bootstrap capacitor"Go
  • Added text to the Overcurrent (OC) Protection section - "It is important to note..." Go

Changes from D Revision (July 2011) to E Revision

  • Added last sentence in description of Thermal Pad in Pin Functions table.Go
  • Added THERMAL INFORMATION tableGo
  • Added a new paragraph in DIFFERENT OPERATIONAL MODES section: In operation modes.....DC logic level.Go

Changes from C Revision (May 2010) to D Revision

  • Changed from 80 mΩ to 110 mΩ in first FeatureGo
  • Changed from 50 V to 52 V in second FeatureGo
  • Deleted (70 V Absolute Maximum) from second FeatureGo
  • Added LED Lighting Drivers to ApplicationsGo
  • Added Includes metallization bond wire and pin resistance to RDS(on) test conditionsGo
  • Changed RDS(on) typ from 80 mΩ to 110 mΩGo
  • Added text to 5th paragraph of Overcurrent (OC) Protection sectionGo
  • Deleted Output Inductor Selection section and moved information into Overcurrent (OC) Protection sectionGo
  • Changed Figure 8Go
  • Changed Figure 16 Go
  • Deleted Application Diagram Example for Three Phase PMSM PVDD Sense Operation and Application Diagram Example for Three Phase PMSM GND Sense Operation figuresGo
  • Added Figure 18 Go
  • Changed Figure 20 Go

Changes from B Revision (Jan 2010) to C Revision

  • Deleted all DRV8422 related descriptions from this data sheetGo
  • Changed DRV8432 pinoutGo
  • Added Thermal Pad and Heat slug rows to end of Pin Functions table. Also added T=thermal in noteGo
  • Added second paragraph to Bootstrap Capacitor....sectionGo
  • Deleted or GVDD undervoltage from DEVICE RESET section second paragraphGo

Changes from A Revision (December 2009) to B Revision

  • Added TA = 125°C power rating of 1.0 W to package power deratings tableGo