Overview
The DRV8701ERGET from Texas Instruments is a single H-bridge gate driver designed to drive 12-V to 24-V bidirectional brushed DC motors using four external N-channel MOSFETs. This device offers a simple interface to controller circuits through either a PH/EN (DRV8701E) or PWM (DRV8701P) control interface. It includes an internal sense amplifier for adjustable current control and uses fixed off-time PWM current chopping to regulate the winding current. The DRV8701ERGET also features low-power sleep mode, integrated protection functions, and two LDO voltage regulators to power external components.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Supply Voltage Range | 5.9 to 45 | V |
| Gate Drive Current (Source) | 6 mA to 150 mA | A |
| Gate Drive Current (Sink) | 12.5 mA to 300 mA | A |
| Logic Input Voltage | 1.8 V, 3.3 V, 5 V | V |
| Current Shunt Amplifier Gain | 20 V/V | |
| Package Type | 24-Pin VQFN (PowerPAD™) | |
| Package Dimensions | 4.0 × 4.0 × 0.9 mm | |
| Operating Ambient Temperature | -40 to 125 | °C |
| Sleep Mode Current | 9 µA | A |
| LDO Voltage Regulators | AVDD: 4.8 V, up to 30 mA; DVDD: 3.3 V, up to 30 mA |
Key Features
- Single H-Bridge Gate Driver
- Drives Four External N-Channel MOSFETs
- Supports 100% PWM Duty Cycle
- Adjustable Gate Drive (5 Levels)
- Integrated PWM Current Regulation and Motor Inrush Current Limiting
- Low-Power Sleep Mode (9 µA)
- Two LDO Voltage Regulators to Power External Components
- Protection Features: VM Undervoltage Lockout (UVLO), Charge Pump Undervoltage (CPUV), Overcurrent Protection (OCP), Pre-Driver Fault (PDF), Thermal Shutdown (TSD), and Fault Condition Output (nFAULT)
- Small Package and Footprint (24-Pin VQFN)
Applications
- Industrial Brushed-DC Motors
- Robotics
- Home Automation
- Industrial Pumps and Valves
- Assistive Technology
- Handheld Vacuum Cleaners
- Power Tools
Q & A
- What is the operating supply voltage range of the DRV8701ERGET?
The operating supply voltage range is from 5.9 V to 45 V.
- What types of logic input voltages does the DRV8701ERGET support?
The device supports 1.8 V, 3.3 V, and 5 V logic input voltages.
- How does the DRV8701ERGET regulate the winding current?
The device uses fixed off-time PWM current chopping to regulate the winding current.
- What are the protection features of the DRV8701ERGET?
The protection features include VM undervoltage lockout, charge pump undervoltage, overcurrent protection, pre-driver fault, thermal shutdown, and fault condition output.
- What is the package type and dimensions of the DRV8701ERGET?
The package type is a 24-Pin VQFN (PowerPAD™) with dimensions of 4.0 × 4.0 × 0.9 mm.
- What is the sleep mode current of the DRV8701ERGET?
The sleep mode current is 9 µA.
- What are the LDO voltage regulators provided by the DRV8701ERGET?
The device provides two LDO voltage regulators: AVDD at 4.8 V up to 30 mA and DVDD at 3.3 V up to 30 mA.
- What are some typical applications of the DRV8701ERGET?
Typical applications include industrial brushed-DC motors, robotics, home automation, industrial pumps and valves, assistive technology, and handheld vacuum cleaners.
- How can the gate drive current be configured for the DRV8701ERGET?
The gate drive current can be configured using a single external resistor on the IDRIVE pin.
- What is the operating ambient temperature range of the DRV8701ERGET?
The operating ambient temperature range is from -40°C to 125°C.
