Overview
The DRV8876NPWPR from Texas Instruments is a versatile and highly integrated N-channel H-bridge motor driver. This device is designed to drive one bidirectional brushed DC motor or two unidirectional brushed DC motors, as well as other resistive and inductive loads. The DRV8876NPWPR operates from a 4.5-V to 37-V power supply range, making it suitable for a wide variety of applications. It features a charge pump regulator that enhances efficiency by supporting high-side N-channel MOSFETs and allowing for 100% duty cycle operation. The device also includes integrated current sensing and regulation, which helps in managing motor current during startup and high-load conditions.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Power Supply Voltage (VM) | 4.5 to 37 | V |
| Peak Output Current (OUT1, OUT2) | 3.5 | A |
| On-Resistance (High-Side + Low-Side) | 700 | mΩ |
| Logic Input Voltage | 1.8, 3.3, 5 | V |
| Ambient Temperature Range | -40 to 125 | °C |
| Junction Temperature Range | -40 to 150 | °C |
| Package Type | HTSSOP (16-pin) | |
| Package Size | 5.00 mm × 4.40 mm |
Key Features
- Integrated N-channel H-bridge with charge pump regulator for efficient high-side and low-side MOSFET operation and 100% duty cycle support.
- Integrated current sensing and regulation with proportional current output to detect motor stall or changes in load conditions.
- Selectable current regulation modes (cycle-by-cycle or fixed off time) and overcurrent protection with automatic retry or latched off outputs.
- Selectable input control modes (PH/EN, PWM, and independent half-bridge control) via the PMODE pin.
- Ultra-low power sleep mode with quiescent current draw of less than 1 µA at 24 V and 25°C.
- Spread spectrum clocking for reduced electromagnetic interference (EMI).
- Internal protection features including undervoltage lockout (UVLO), charge pump undervoltage (CPUV), overcurrent protection (OCP), and thermal shutdown (TSD).
- Fault indicator pin (nFAULT) for monitoring fault conditions.
Applications
- Brushed DC motor control in various industrial and consumer electronics.
- Printers and scanners.
- Smart meters.
- ATMs, currency counters, and EPOS systems.
- Servo motors and actuators.
- Toys and robotics.
Q & A
- What is the operating voltage range of the DRV8876NPWPR?
The DRV8876NPWPR operates from a 4.5-V to 37-V power supply range.
- What is the peak output current capability of the DRV8876NPWPR?
The peak output current capability is 3.5 A.
- What types of motors can the DRV8876NPWPR drive?
The device can drive one bidirectional brushed DC motor or two unidirectional brushed DC motors.
- What are the key protection features of the DRV8876NPWPR?
The device includes undervoltage lockout (UVLO), charge pump undervoltage (CPUV), overcurrent protection (OCP), and thermal shutdown (TSD).
- How does the DRV8876NPWPR manage current sensing and regulation?
The device integrates current sensing and regulation with proportional current output, allowing for the detection of motor stall or changes in load conditions.
- What is the purpose of the charge pump regulator in the DRV8876NPWPR?
The charge pump regulator enhances efficiency by supporting high-side N-channel MOSFETs and allowing for 100% duty cycle operation.
- How does the DRV8876NPWPR reduce electromagnetic interference (EMI)?
The device uses spread spectrum clocking to reduce EMI.
- What is the quiescent current draw in sleep mode?
The quiescent current draw in sleep mode is less than 1 µA at 24 V and 25°C.
- How are fault conditions indicated in the DRV8876NPWPR?
Fault conditions are indicated on the nFAULT pin.
- What are the control modes available for the DRV8876NPWPR?
The device supports PH/EN, PWM, and independent half-bridge control modes via the PMODE pin.
