The DRV8304 device is an integrated gate driver for 3-phase brushless DC (BLDC) motors applications for 12-V and 24-V DC rails. These applications include field-oriented control (FOC), sinusoidal current control, and trapezoidal current control of BLDC motors. The device integrates three current-sense amplifiers (CSA) for sensing the phase currents of BLDC motors for optimum FOC and current-control system implementation. An AUTOCAL feature automatically calibrates the CSA offset error for accurate current sensing.
Key features
- 6-V to 38-V, Triple Half-Bridge Gate Driver With Integrated 3x Current Sense Amplifiers (CSA)
- 40-V Absolute Maximum Rating
- Fully Optimized for 12-V and 24-V DC Rails
- Drives High-Side and Low-Side N-Channel MOSFETs
- Supports 100% PWM Duty Cycle
- Smart Gate-Drive Architecture
- Adjustable Slew-Rate Control for Better EMI and EMC Performance
- VGS Hand-Shake and Minimum Dead-Time Insertion to Avoid Shoot-Through
- 15-mA to 150-mA Peak Source Current
- 30-mA to 300-mA Peak Sink Current
- 6x, 3x, 1x and Independent PWM Modes
- Supports 120º Sensored Operation
- Integrated Gate-Driver Power Supplies
- High-Side Doubler Charge Pump
- Low-Side Linear Regulator
Applications
- Printers
- BLDC Motor Modules
- White Goods
- CPAPs, Fans, and Pumps
- Drones, Robotics, and RC Toys
- ATM and Currency Counting
Block diagram
