Overview
The DRV3245CQPHPRQ1 is a three-phase gate driver IC designed by Texas Instruments for automotive motor-drive applications. This device is AEC-Q100 qualified and meets the functional safety requirements of ISO 26262, making it suitable for safety-critical automotive systems. It features three half-bridge drivers capable of driving high-side and low-side N-channel MOSFETs, along with sophisticated protection and monitoring mechanisms. The DRV3245CQPHPRQ1 is optimized for 12-V battery systems and supports low battery voltages during cold-crank operation through a charge-pump driver, enabling 100% duty cycle.
Key Specifications
| Parameter | Value | Description |
|---|---|---|
| Operating Voltage | 4.5-V to 45-V | Range of input voltage the device can operate within |
| Temperature Range | -40°C to +125°C | Device temperature grade 1 for automotive applications |
| Package Type | HTQFP (PHP), 48 pins | Thermally-enhanced 48-pin QFP package |
| Gate Drive Current | Programmable peak gate drive currents up to 1A | Adjustable current for driving MOSFETs |
| Current-Sense Amplifiers | 3 high-precision current-shunt amplifiers | For accurate current sensing and monitoring |
| Phase Comparators | 3-phase comparators with status through SPI | For phase monitoring and diagnostics |
| PWM Input Control | Up to 20 kHz, 3-PWM or 6-PWM input control | Flexible control options for motor drive applications |
| Digital Interface | Supports both 3.3-V and 5-V digital interface | Compatibility with various digital signal levels |
| Protection Features | Internal regulators, battery voltage monitor, SPI CRC, clock monitor, analog built-in self test, programmable dead-time control, MOSFET shoot-through prevention, MOSFET VDS overcurrent monitors, gate-source voltage real-time monitor, overtemperature warning and shutdown | Comprehensive protection mechanisms for reliable operation |
Key Features
- Functional Safety Compliance: Designed according to ISO 26262 for functional safety applications up to ASIL D.
- Charge-Pump Driver: Enables 100% duty cycle and supports low battery voltages during cold-crank operation.
- Current-Sense Amplifiers and Phase Comparators: Integrates 3 high-precision current-shunt amplifiers and 3-phase comparators for accurate current sensing and phase monitoring.
- SPI-Based Configuration: Allows configuration of the driver and its peripherals through SPI, reducing the bill of materials (BOM) and PCB space.
- Protection and Diagnostics: Includes internal regulators, battery voltage monitor, SPI CRC, clock monitor, analog built-in self test, and other protection features for reliable operation.
- Flexible Control Options: Supports both 3-PWM and 6-PWM input control up to 20 kHz and single PWM-mode commutation capability.
- Digital Interface Compatibility: Supports both 3.3-V and 5-V digital interfaces.
Applications
- Electrical Power Steering (EPS, EHPS): Suitable for steering systems in vehicles.
- Electrical Brake and Brake Assist: Used in braking systems for enhanced safety and control.
- Transmissions and Pumps: Applicable in various automotive transmission and pump systems.
- Other 12-V Automotive Motor-Control Applications: General use in any 12-V automotive motor control system requiring high reliability and safety features.
Q & A
- What is the operating voltage range of the DRV3245CQPHPRQ1?
The operating voltage range is from 4.5-V to 45-V.
- What is the temperature range for the DRV3245CQPHPRQ1?
The device operates within a temperature range of -40°C to +125°C.
- What type of package does the DRV3245CQPHPRQ1 come in?
The device is packaged in a thermally-enhanced 48-pin HTQFP (PHP).
- What is the maximum gate drive current for the DRV3245CQPHPRQ1?
The peak gate drive current is programmable up to 1A.
- How many current-sense amplifiers does the DRV3245CQPHPRQ1 have?
The device integrates 3 high-precision current-shunt amplifiers.
- What is the purpose of the charge-pump driver in the DRV3245CQPHPRQ1?
The charge-pump driver enables 100% duty cycle and supports low battery voltages during cold-crank operation.
- What protection features are included in the DRV3245CQPHPRQ1?
The device includes internal regulators, battery voltage monitor, SPI CRC, clock monitor, analog built-in self test, programmable dead-time control, MOSFET shoot-through prevention, MOSFET VDS overcurrent monitors, gate-source voltage real-time monitor, and overtemperature warning and shutdown.
- What digital interfaces does the DRV3245CQPHPRQ1 support?
The device supports both 3.3-V and 5-V digital interfaces.
- What are some common applications for the DRV3245CQPHPRQ1?
Common applications include electrical power steering (EPS, EHPS), electrical brake and brake assist, transmissions, and other 12-V automotive motor-control applications.
- Is the DRV3245CQPHPRQ1 compliant with functional safety standards?
Yes, the device is designed according to ISO 26262 for functional safety applications up to ASIL D.
