Overview
The DRV8245HQRXZRQ1 is a highly integrated H-bridge driver produced by Texas Instruments, designed specifically for automotive applications. This component is part of the DRV8245-Q1 family, which meets the stringent AEC-Q100 standards for automotive-grade electronics. It is engineered to drive DC motors and other inductive loads with high efficiency and reliability, making it suitable for automotive systems such as power seats, sunroofs, and HVAC actuators. Its unique selling points include integrated current sensing, robust protection features, and support for multiple control modes, positioning it as a competitive solution for automotive motor control applications.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Operating Voltage Range | 4.5 to 35 | V | Absolute maximum: 40V |
| Output Current (Max) | 32 | A | |
| RON_LS + RON_HS (VQFN-HR) | 32 | mΩ | |
| RON_LS + RON_HS (HTSSOP) | 40 | mΩ | |
| PWM Frequency | Up to 25 | kHz | With auto dead-time insertion |
| Sleep Current (Typical) | 1 | μA | At 25°C |
| Control Modes | PWM, PH/EN, Independent | Supports single full-bridge or dual half-bridge | |
| Protection Features | Overcurrent, Overtemperature, Load Diagnostics |
Key Features
- Integrated current sensing eliminates the need for external shunt resistors.
- Robust protection features include overcurrent, overtemperature, and load diagnostics.
- Supports multiple control modes: PWM, PH/EN, and independent half-bridge control.
- Low sleep current (1 μA typical) for power efficiency in standby mode.
- Designed for automotive applications, meeting AEC-Q100 standards.
Applications
The DRV8245HQRXZRQ1 is ideal for automotive systems requiring precise motor control, such as power seats, sunroofs, HVAC actuators, and window lift mechanisms. Its high efficiency, integrated current sensing, and robust protection features make it a reliable choice for automotive designers. Additionally, its support for multiple control modes allows for flexible implementation in various motor control architectures.
Q & A
1. What is the operating voltage range of the DRV8245HQRXZRQ1?
The operating voltage range is 4.5V to 35V, with an absolute maximum of 40V.
2. What is the maximum output current supported by this driver?
The maximum output current is 32A.
3. Does the DRV8245HQRXZRQ1 support PWM control?
Yes, it supports PWM control with a frequency of up to 25kHz.
4. What are the key protection features of this driver?
It includes overcurrent, overtemperature, and load diagnostics for robust protection.
5. Is the DRV8245HQRXZRQ1 suitable for automotive applications?
Yes, it meets AEC-Q100 standards, making it suitable for automotive use.
6. What is the typical sleep current of this driver?
The typical sleep current is 1 μA at 25°C.
7. Does the DRV8245HQRXZRQ1 require external shunt resistors for current sensing?
No, it integrates current sensing, eliminating the need for external shunt resistors.
8. What control modes are supported by this driver?
It supports PWM, PH/EN, and independent half-bridge control modes.
9. What is the on-resistance (RON) of the DRV8245HQRXZRQ1?
The total on-resistance (RON_LS + RON_HS) is 32 mΩ for the VQFN-HR package and 40 mΩ for the HTSSOP package.
10. Can this driver be used in non-automotive applications?
While it is designed for automotive applications, it can be used in other industrial or consumer applications requiring robust motor control.
