SLVSCK2A April   2014  – February 2016 DRV8307

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configurations and Functions
  6. 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 Electrical Characteristics
    6. 6.6 Timing Requirements
    7. 6.7 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1  Hall Comparators
      2. 7.3.2  HALLOUT Output
      3. 7.3.3  Enable, Reset, and Clock Generation
      4. 7.3.4  Commutation
        1. 7.3.4.1 120° 3-Hall Commutation
        2. 7.3.4.2 120° Single-Hall Commutation
      5. 7.3.5  Braking
      6. 7.3.6  Output Pre-Drivers
      7. 7.3.7  Current Limit
      8. 7.3.8  Charge Pump
      9. 7.3.9  5-V Linear Regulator
      10. 7.3.10 Power Switch
      11. 7.3.11 Protection Circuits
        1. 7.3.11.1 VM Undervoltage Lockout (UVLO)
        2. 7.3.11.2 VM Overvoltage (VMOV)
        3. 7.3.11.3 Motor Overcurrent Protection (OCP)
        4. 7.3.11.4 Charge Pump Failure (CPFAIL)
        5. 7.3.11.5 Charge Pump Short (CPSC)
        6. 7.3.11.6 Rotor Lockup (RLOCK)
        7. 7.3.11.7 Overtemperature (OTS)
    4. 7.4 Device Functional Modes
      1. 7.4.1 Clock PWM Mode
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Hall Sensor Configurations and Connections
      2. 8.1.2 ENABLEn Considerations
      3. 8.1.3 Faster Starting and Stopping
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Performance Plot
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Trademarks
    2. 11.2 Electrostatic Discharge Caution
    3. 11.3 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

1 Features

  • Three-Phase Brushless DC Motor Controller
    • Single PWM Input Controls Speed
  • Operating Supply Voltage 8.5 to 32 V
  • 30-mA Gate-Drive Current to 6 N-Channel MOSFETs
  • Integrated Current Sense Amplifier
  • 5-V Regulator for Hall Sensors
  • Low-Power Standby Mode
  • Locked Rotor Detection and Restart
  • Integrated Overcurrent and Overtemperature Protection
  • 6- × 6-mm VQFN Package, 0.5-mm Pitch

2 Applications

  • Industrial Pumps and Fans
  • White Goods
  • Robotic Appliances

3 Description

The DRV8307 is a three half-bridge pre-driver that drives six N-type MOSFETs 30 mA with a single power supply. Aimed at sensored three-phase brushless DC motors, the DRV8307 is driven by a single PWM input and supports integrated commutation logic with three Hall sensor inputs. A separate 5-V regulator is also included to be used to power Hall-effect sensors and other external components.

The DRV8307 includes a current sense input for current limiting and protection. The current limit can be set by adjusting the value of the RISENSE sense resistor.

Motor operation (start and stop) is controlled through the ENABLEn terminal. If the ENABLEn terminal is set high and motor rotation has stopped, the device enters into a low-power standby state, thereby conserving overall system power during periods of inactivity.

Protection features are also included in the DRV8307 device such as locked rotor detection, as well as overcurrent and overtemperature protection and undervoltage lockout to bolster overall system robustness and reliability.

Device Information

ORDER NUMBER PACKAGE BODY SIZE
DRV8307RHA VQFN (40) 6 mm × 6 mm

Simplified Schematic

DRV8307 8307p1.gif