DRV8701 Brushed DC Motor Full-Bridge Gate Driver
Features
- Single H-Bridge Gate Driver
- Drives Four External N-Channel MOSFETs
- Supports 100% PWM Duty Cycle
- 5.9-V to 45-V Operating Supply Voltage Range Two Control Interface Options
- PH/EN (DRV8701E)
- PWM (DRV8701P)
- Adjustable Gate Drive (5 Levels) 6-mA to 150-mA Source Current
- 12.5-mA to 300-mA Sink Current
- Supports 1.8-V, 3.3-V, and 5-V Logic Inputs
- Current Shunt Amplifier (20 V/V)
- Integrated PWM Current Regulation
- Limits Motor Inrush CurrentLow-Power Sleep Mode (9 μA)
- Two LDO Voltage Regulators to Power External
- Components
- AVDD: 4.8 V, up to 30-mA Output Load
- DVDD: 3.3 V, up to 30-mA Output Load
- Small Package and Footprint 24-Pin VQFN (PowerPADTM)
- 4.0 x 4.0 x 0.9 mm
- Protection Features:
- VM Undervoltage Lockout (UVLO)
- Charge Pump Undervoltage (CPUV)
- Overcurrent Protection (OCP)
- Pre-Driver Fault (PDF)
- Thermal Shutdown (TSD)
- Fault Condition Output (nFAULT)
Motor/Load Current (System Dependent)
Because the DRV8701 uses external MOSFETs, the maximum current can pull is limited only by the MOSFETs you choose and your PCB's thermal design.
- DRV8701 Evaluation Module (EVM): Rated for 15A continuous and 20A peak.
- Theoretical Limit: With high-performance MOSFETs and heavy copper traces (e.g., 2oz or 3oz copper), users have successfully pushed this driver to handle 30A to 50A+ continuous loads.
compare
| Chip | Motor Type | Voltage Range (V) | Continuous Current (A) | Peak Current (A) | RDS(on) (mΩ) | Control Interface | Features |
|---|---|---|---|---|---|---|---|
| DRV8313 | 3-Phase BLDC | 8 – 60 | 2.5 | — | — | PWM | Triple half-bridge, integrated FETs, supports BLDC motors |
| DRV8837 | Brushed DC | 1.8 – 11 | 1 | 1.8 | 280 | PWM | Single H-bridge, low voltage, compact design |
| DRV8848 | Brushed DC / Stepper | 4 – 18 | 2 (per H-bridge) | 4 (parallel mode) | 900 | PWM | Dual H-bridge, supports stepper and DC motors, parallel mode capability |
| DRV8833 | Brushed DC / Stepper | 2.7 – 10.8 | 1.5 (per H-bridge) | 2 | 360 | PWM | Dual H-bridge, current regulation, outputs can be paralleled |
| DRV8834 | Stepper | 2.5 – 10.8 | 1.5 | 2 | 600 | STEP/DIR | Microstepping up to 1/32, low voltage operation |
| DRV8825 | Stepper | 8.2 – 45 | 2.5 | 3 | 400 | STEP/DIR | Microstepping up to 1/32, high voltage support |
| DRV8835 | Brushed DC | 2 – 11 | 1.5 (per H-bridge) | 1.5 | 280 | PWM | Dual H-bridge, low voltage, compact design |
| DRV8870 | Brushed DC | 6.5 – 45 | 3.5 | 5 | 565 | PWM | Single H-bridge, current regulation, fault reporting |
| DRV8871 | Brushed DC | 6.5 – 45 | 3.6 | 6 | 565 | PWM | Single H-bridge, current regulation, fault reporting |
| DRV8872 | Brushed DC | 6.5 – 45 | 3.6 | 3.7 | 565 | PWM | Single H-bridge, current regulation, fault reporting |
| Feature/Specification | DRV8837 | DRV8833 | DRV8825 |
|---|---|---|---|
| Type | Low-Voltage Motor Driver | Dual H-Bridge Motor Driver | Stepper Motor Driver |
| Operating Voltage Range | 1.8 V–7 V | 2.7 V–10.8 V | 8.2 V–45 V |
| Output Current (Max) | 1.8 A | 1 A per channel (2 A peak) | 2.5 A per phase (with cooling) |
| Control Interface | PWM | PWM | Step/Direction |
| Number of Outputs | 1 H-Bridge (single motor) | 2 H-Bridges (dual motors) | 2 H-Bridges (bipolar stepper) |
| Features | Low voltage, small size | Current limiting, thermal shutdown | Adjustable current regulation |
| Microstepping | N/A | N/A | Up to 1/32 microstepping |
| Protection Features | Undervoltage, thermal, overcurrent | Undervoltage, thermal, overcurrent | Overtemperature, overcurrent |
| Typical Applications | Portable devices, toys | Robotics, small DC motors | 3D printers, CNC machines |
| Package Options | 8-pin WSON, MSOP | 16-pin HTSSOP | 28-pin HTSSOP |