Overview
The DRV8302DCAR is a gate driver IC designed by Texas Instruments for three-phase motor drive applications. This device is integrated with three half-bridge drivers, each capable of driving two N-channel MOSFETs. It operates on a single power supply with a wide voltage range from 8-V to 60-V and uses a bootstrap gate driver architecture with trickle charge circuitry to support 100% duty cycle. The DRV8302DCAR includes automatic hand shaking to prevent current shoot-through and integrated VDS sensing to protect against overcurrent conditions. Additionally, it features dual current shunt amplifiers for accurate current measurement and a switching mode buck converter to support MCU or additional system power needs.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Package | HTSSOP-56 | 56 pins |
| Operating Temperature Range | -40°C to 125°C | |
| Operating Supply Voltage Range | 8-V to 60-V | |
| Gate Drive Current Capability | 1.7-A source, 2.3-A sink | |
| PWM Input Modes | 6 or 3 PWM input modes | |
| Interface Support | 3.3-V and 5-V interface support | |
| Current Shunt Amplifiers | Dual integrated current shunt amplifiers with adjustable gain and offset | |
| Buck Converter | Integrated switching mode buck converter with adjustable output and switching frequency | Up to 1.5 A output |
| Protection Features | Programmable dead time control, overcurrent protection, undervoltage lockout, overvoltage lockout, overtemperature warning/shutdown |
Key Features
- Bootstrap gate driver with 100% duty cycle support
- Hardware control interface for configuring device parameters
- Dual integrated current shunt amplifiers with adjustable gain and offset for bi-directional current sensing
- Integrated switching mode buck converter with adjustable output and switching frequency
- Programmable dead time control (DTC) and overcurrent protection (OCP)
- PVDD and GVDD undervoltage lockout (UVLO) and GVDD overvoltage lockout (OVLO)
- Overtemperature warning/shutdown (OTW/OTS) reported through nFAULT and nOCTW pins
Applications
- 3-Phase BLDC and PMSM motors
- CPAP and pumps
- E-bikes
- Power tools
- Robotics and RC toys
- Industrial automation
Q & A
- What is the operating supply voltage range of the DRV8302DCAR?
The DRV8302DCAR operates on a single power supply with a wide voltage range from 8-V to 60-V.
- What type of gate driver architecture does the DRV8302DCAR use?
The DRV8302DCAR uses a bootstrap gate driver architecture with trickle charge circuitry to support 100% duty cycle.
- What are the key protection features of the DRV8302DCAR?
The DRV8302DCAR includes programmable dead time control, overcurrent protection, undervoltage lockout, overvoltage lockout, and overtemperature warning/shutdown.
- What is the purpose of the integrated current shunt amplifiers in the DRV8302DCAR?
The dual integrated current shunt amplifiers are used for accurate bi-directional current sensing and provide adjustable gain and offset.
- What is the function of the integrated buck converter in the DRV8302DCAR?
The integrated switching mode buck converter provides up to 1.5 A of output to support MCU or additional system power needs and operates independently of the gate driver circuitry.
- How does the DRV8302DCAR prevent current shoot-through?
The DRV8302DCAR uses automatic hand shaking between the high side and low side MOSFETs during switching transitions to prevent current shoot-through.
- What types of motors can the DRV8302DCAR drive?
The DRV8302DCAR is designed for driving 3-phase BLDC and PMSM motors.
- What are some common applications of the DRV8302DCAR?
Common applications include e-bikes, power tools, robotics and RC toys, and industrial automation.
- How is the dead time controlled in the DRV8302DCAR?
The dead time is adjustable using an external resistor on the DTC pin, allowing for fine-tuning of the switching of the external MOSFETs.
- How are error conditions reported in the DRV8302DCAR?
Error conditions are reported through the nFAULT and nOCTW pins.
