Overview
The DRV8701PRGER, produced by Texas Instruments, is a single H-bridge gate driver designed to efficiently drive bidirectional brushed DC motors within a 12-V to 24-V range. This device uses four external N-channel MOSFETs and offers flexible control options through either PH/EN or PWM interfaces, making it suitable for integration with various controller circuits. The DRV8701PRGER includes an internal sense amplifier for adjustable current control and employs fixed off-time PWM current chopping to regulate the winding current, ensuring smooth motor operation.
Key Specifications
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Number of full bridges | 1 | Vs (min) (V) | 5.9 |
| Vs ABS (max) (V) | 47 | Sleep current (µA) | 9 |
| Control mode | PH/EN, PWM | Control interface | Hardware (GPIO) |
| Operating temperature range (°C) | -40 to 125 | Package type | 24-Pin VQFN (PowerPAD™) |
| Package size | 4.0 × 4.0 × 0.9 mm | Gate drive voltage | 9.5-V VGS |
| Source current range | 6-mA to 150-mA | Sink current range | 12.5-mA to 300-mA |
| Logic input voltage | 1.8-V, 3.3-V, and 5-V | Current shunt amplifier gain | 20 V/V |
| LDO voltage regulators | AVDD: 4.8 V, up to 30-mA; DVDD: 3.3 V, up to 30-mA | Protection features | VM UVLO, CPUV, OCP, PDF, TSD, nFAULT |
Key Features
- Single H-Bridge Gate Driver: Drives four external N-channel MOSFETs to control a bidirectional brushed DC motor.
- Control Interface Options: Supports both PH/EN and PWM control interfaces for flexible integration with controller circuits.
- Adjustable Gate Drive: Configurable gate drive current with five levels using an external resistor on the IDRIVE pin.
- Current Regulation: Includes an internal sense amplifier and fixed off-time PWM current chopping for precise current control.
- Integrated PWM Current Regulation: Regulates the winding current to limit motor inrush current.
- Low-Power Sleep Mode: Achieves very-low quiescent current draw (9 µA) when in sleep mode.
- LDO Voltage Regulators: Provides two LDO voltage regulators (AVDD: 4.8 V, DVDD: 3.3 V) to power external components.
- Protection Features: Includes VM undervoltage lockout, charge pump undervoltage, overcurrent protection, pre-driver fault, thermal shutdown, and fault condition output.
Applications
The DRV8701PRGER is commonly used in various applications requiring precise motor control, such as:
- Industrial brushed-DC motors
- Robotics
- Home automation
- Industrial pumps and valves
- Power tools
- Handheld vacuum cleaners
- Printers, scanners, and office automation equipment
Q & A
- What is the operating voltage range of the DRV8701PRGER?
The DRV8701PRGER operates within a voltage range of 5.9 V to 45 V.
- What types of control interfaces does the DRV8701PRGER support?
The DRV8701PRGER supports both PH/EN and PWM control interfaces.
- How does the DRV8701PRGER regulate motor current?
The DRV8701PRGER uses fixed off-time PWM current chopping and an internal sense amplifier for current regulation.
- What are the protection features of the DRV8701PRGER?
The DRV8701PRGER includes VM undervoltage lockout, charge pump undervoltage, overcurrent protection, pre-driver fault, thermal shutdown, and fault condition output.
- What is the package type and size of the DRV8701PRGER?
The DRV8701PRGER comes in a 24-Pin VQFN (PowerPAD™) package, measuring 4.0 × 4.0 × 0.9 mm.
- What is the sleep current of the DRV8701PRGER?
The DRV8701PRGER has a sleep current of 9 µA.
- Can the DRV8701PRGER drive stepper motors?
While primarily designed for brushed DC motors, the DRV8701PRGER can also be used in some configurations for stepper motors, but it is not its primary application.
- What are the LDO voltage regulators provided by the DRV8701PRGER?
The DRV8701PRGER provides two LDO voltage regulators: AVDD at 4.8 V (up to 30-mA output load) and DVDD at 3.3 V (up to 30-mA output load).
- How is the gate drive current configured on the DRV8701PRGER?
The gate drive current is configurable using a single external resistor on the IDRIVE pin.
- What is the operating temperature range of the DRV8701PRGER?
The DRV8701PRGER operates within an temperature range of -40°C to 125°C.
