Overview
The DRV8701ERGER from Texas Instruments is a single H-bridge gate driver designed to drive 12-V to 24-V bidirectional brushed DC motors. This component uses four external N-channel MOSFETs and is available in two control interface options: PH/EN (DRV8701E) and PWM (DRV8701P). It is particularly suited for applications requiring adjustable gate drive and integrated PWM current regulation.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Power Supply Voltage (VM) | 5.9 to 45 | V |
| High-Side Gate Drive Current | 6 mA to 150 mA | A |
| Low-Side Gate Drive Current | 12.5 mA to 300 mA | A |
| Logic Input Voltage | 1.8 V, 3.3 V, 5 V | V |
| Internal Logic Regulator Voltage (DVDD) | 3.3 V, up to 30 mA | V, A |
| Internal Analog Regulator Voltage (AVDD) | 4.8 V, up to 30 mA | V, A |
| Package Type | 24-Pin VQFN (PowerPAD™) | |
| Package Dimensions | 4.0 × 4.0 × 0.9 mm | mm |
| Junction-to-Ambient Thermal Resistance (RθJA) | 34.8 | °C/W |
Key Features
- Adjustable gate drive with five levels of current
- Supports 100% PWM duty cycle
- Integrated PWM current regulation to limit motor inrush current
- Current shunt amplifier with a gain of 20 V/V
- Low-power sleep mode with quiescent current of 9 μA
- Two LDO voltage regulators (AVDD: 4.8 V, DVDD: 3.3 V) to power external components
- Internal protection functions including undervoltage lockout, charge pump faults, overcurrent shutdown, short-circuit protection, pre-driver faults, and overtemperature protection
- Fault condition output on the nFAULT pin
Applications
- Industrial brushed-DC motors
- Robotics
- Home automation
- Industrial pumps and valves
- Power tools
- Handheld vacuum cleaners
Q & A
- What is the operating voltage range of the DRV8701?
The DRV8701 operates within a voltage range of 5.9 V to 45 V.
- What are the control interface options for the DRV8701?
The DRV8701 is available with PH/EN (DRV8701E) or PWM (DRV8701P) control interfaces.
- What is the purpose of the current shunt amplifier in the DRV8701?
The current shunt amplifier allows for adjustable current control with a gain of 20 V/V.
- How does the DRV8701 protect against overcurrent conditions?
The DRV8701 includes overcurrent protection (OCP) and indicates fault conditions on the nFAULT pin.
- What is the quiescent current in the low-power sleep mode of the DRV8701?
The quiescent current in the low-power sleep mode is 9 μA.
- What are the dimensions of the DRV8701 package?
The DRV8701 is packaged in a 24-Pin VQFN (PowerPAD™) with dimensions of 4.0 × 4.0 × 0.9 mm.
- What types of motors can the DRV8701 drive?
The DRV8701 is designed to drive 12-V to 24-V bidirectional brushed DC motors.
- What logic input voltages are supported by the DRV8701?
The DRV8701 supports 1.8 V, 3.3 V, and 5 V logic input voltages.
- What are the internal regulator voltages provided by the DRV8701?
The DRV8701 provides internal regulator voltages of 3.3 V (DVDD) and 4.8 V (AVDD), each capable of up to 30 mA output load.
- How does the DRV8701 regulate winding current?
The DRV8701 regulates winding current using fixed off-time PWM current chopping.
