Блог компании Recycle TI BDC Motor Drivers:DRV8218,DRV8762-Q1,DRV8001-Q1,DRV8002-Q1,DRV8000-Q1

Recycle TI BDC Motor Drivers:DRV8218,DRV8762-Q1,DRV8001-Q1,DRV8002-Q1,DRV8000-Q1

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I. General Product Overview

The five chips analysed here are all standardised BDC motor driver devices from TI, suitable for forward and reverse speed control and start-stop control of brushed DC motors, covering both the low-voltage consumer-grade and high-voltage automotive/industrial-grade sectors. Among these, the DRV8218 is a general-purpose consumer-grade integrated H-bridge driver that requires no external power devices; the DRV8762-Q1 is a high-voltage automotive smart gate driver, designed for use with an external MOSFET architecture; the three chips in the DRV8000 series are multifunctional drivers specifically designed for automotive body applications, tailored for car doors and body auxiliary motors, all of which meet stringent operational protection requirements and automotive certification standards.

II. Detailed Analysis of Individual Products

1. DRV8218: General-Purpose Low-Voltage, Highly Integrated BDC Motor Driver

The DRV8218 is a low-cost, ultra-compact, integrated H-bridge BDC motor driver launched by TI, designed primarily for low-voltage, low-power applications. With its ultra-low on-resistance, extremely low sleep power consumption and multiple control modes, it is the preferred solution for consumer electronics and small industrial control equipment.

Key electrical parameters: motor operating voltage 1.8V–11V, logic voltage 1.8V–5.5V, peak output current 8A, total H-bridge on-resistance as low as 85mΩ (40mΩ per FET, as low as 20mΩ in parallel half-bridge mode); sleep current as low as 120nA, enabling extremely low-power standby operation.

Key features and technical highlights: Built-in four N-channel power FETs and a triple-voltage charge pump eliminate the need for external capacitors, significantly reducing PCB footprint, whilst supporting stable operation at 100% duty cycle; compatible with four control modes—PWM, phase/enable (PH/EN), independent half-bridge and parallel half-bridge—and adapted to mainstream 1.8V/3.3V/5V microcontroller logic levels; Equipped with an automatic sleep timer function, enabling low-power switching without the need for additional GPIO control; integrates triple protection—Undervoltage Lockout (UVLO), Overcurrent Protection (OCP) and Thermal Shutdown (TSD)—to prevent device damage caused by overload, undervoltage or overheating.

Suitable applications: Capable of driving unidirectional or bidirectional BDC motors, two channels of low-power unidirectional motors, latching relays, push-pull solenoid valves and LED loads; widely used in smart home systems, portable devices, small toys and low-voltage industrial control actuators.

2. DRV8762-Q1 Automotive-Grade High-Voltage Smart Gate BDC Driver

The DRV8762-Q1 is an AEC-Q100 automotive-grade smart H-bridge gate driver designed for 48V automotive systems. Utilising an external MOSFET architecture, it offers high voltage, high precision and high controllability, making it the core drive solution for high-power BDC motors in automotive applications.

Key electrical parameters: operating voltage range of 8V to 85V, compatible with 48V automotive battery systems; sleep current of 4.5μA, supporting both high- and low-voltage wake-up; adjustable peak gate drive current (source 224mA / drain 448mA), capable of driving MOSFETs with a capacitance of 400nC, and suitable for high-frequency operation at 20kHz.

Core functions and technical highlights: Equipped with TI’s proprietary Smart Gate Drive technology, it enables closed-loop automatic dead-time insertion and supports eight levels of gate current configuration; overcurrent shutdown supports soft shutdown, effectively suppressing voltage spikes in inductive loads; integrates a high-precision low-side current sampling amplifier with an input offset voltage of just 1 mV across the full temperature range, four adjustable gain levels, and support for precise unidirectional/bidirectional current detection; It supports fine-tuned configuration and fault diagnosis via the SPI serial interface, and, combined with dedicated driver disable and motor short-circuit braking pins, offers exceptional control flexibility; Built-in comprehensive protection including battery voltage monitoring, MOSFET VDS overcurrent protection, VGS gate fault detection, over-temperature warning and shutdown, ensuring the highest level of automotive-grade reliability; Compatible with 2x and 4x PWM control modes, and supports 3.3V/5V logic inputs.

Suitable applications: Specifically designed for high-power 48V automotive body-control (BDC) motors, suitable for demanding automotive applications such as water pumps, fans, window motors and chassis auxiliary actuators.

3. DRV8000-Q1 Automotive-Grade Multifunctional Body-Control (BDC) Driver

The DRV8000-Q1 is a 40V automotive-grade, multi-functional half-bridge + high-side integrated driver launched by TI for automotive body control systems. It focuses on lightweight body design and high integration, simplifying the peripheral circuitry for in-vehicle motor drives.

Key electrical parameters: Automotive-grade operating voltage of 4.5V to 40V, covering the full range of fluctuations in 12V in-vehicle battery conditions; Complies with AEC-Q100 Grade 1 automotive certification, with an operating temperature range of –40°C to 125°C, making it suitable for the harsh in-vehicle environment characterised by high temperatures, vibration and voltage fluctuations.

Key features and technical highlights: Highly integrated half-bridge drive and high-side switch functions; a single chip can perform start/stop, speed control and direction reversal control for low-power BDC motors in vehicle bodies, replacing multiple discrete components; Built-in comprehensive automotive-grade protection mechanisms, including over-voltage, under-voltage, over-current, over-temperature and reverse connection protection, to withstand pulsed interference from the vehicle power supply; minimal hardware control requiring no complex software configuration, reducing the development complexity and cost of body ECUs; low static power consumption design to meet vehicle-wide static power consumption control requirements.

Suitable applications: Primarily targeted at general-purpose, low-power body actuators in automotive applications, suitable for applications such as in-vehicle rear-view mirror adjustment, door lock motors, small ventilation valves and lighting adjustment actuators.

4. DRV8001-Q1 Automotive-Grade BDC Driver for Front Doors

The DRV8001-Q1 is a customised automotive-grade driver from the DRV8000 series, optimised specifically for automotive front door control systems. It is a dedicated driver IC for door motors and window actuators, with highly customised functionality and operational adaptability.

Key electrical parameters: Rated operating voltage 4.5V–40V; compatible with 12V automotive battery systems and resistant to in-vehicle voltage transients; Stable operation across the full temperature range of –40°C to 125°C, having passed the full suite of AEC-Q100 automotive reliability certifications.

Key features and technical highlights: The drive logic is optimised for the operational characteristics of front doors, which involve high-frequency start-stop cycles and frequent direction changes, ensuring smooth, jitter-free motor start-up and stop; Integrated multi-channel independent drive channels enable simultaneous control of multiple low-power BDC motors for door locks, window lifts and wing mirror adjustment; Built-in precise fault diagnosis functionality enables real-time reporting of overcurrent, stalled motor and overheating faults, ensuring compatibility with the vehicle’s intelligent diagnostic system; minimal peripheral circuitry accommodates the confined installation space within car doors, facilitating the miniaturisation and lightweight design of door controllers.

Application scenarios: Dedicated automotive front door controller, compatible with core components such as front door window lift motors, door lock motors and front door mirror adjustment motors.

5. DRV8002-Q1 Automotive-Grade BDC Driver for Rear Doors

The DRV8002-Q1 is a customised aftermarket variant of the DRV8000 series. Complementing the functionality of the DRV8001-Q1, it is specifically designed for automotive rear door control applications and has been optimised to address the operating frequency and load characteristics of rear door motors.

Key electrical parameters: Retains the series’ wide operating voltage range of 4.5V to 40V, meets automotive-grade temperature range and reliability standards, is fully compatible with 12V in-vehicle power systems, and complies with vehicle electrical specifications.

Key features and technical highlights: Adapted to the low-frequency start-stop and low-load operating characteristics of rear doors, with optimised power consumption control logic to further reduce the vehicle’s static power consumption; retains multi-channel independent drive, comprehensive fault diagnosis and a full suite of in-vehicle protection functions, whilst maintaining hardware and software compatibility with front-door solutions to facilitate standardised development of the vehicle control unit; Device stability has been enhanced to withstand the dust, vibration and high-temperature conditions typical of rear doors, eliminating drive anomalies caused by door jolts.

Application Scenarios: Dedicated automotive rear door control systems, suitable for applications such as rear window lifting, rear door locking and rear-seat auxiliary actuators.