Overview
The DRV8876PWPR from Texas Instruments is a versatile and highly integrated 40-V, 3.5-A H-bridge motor driver. This device is designed to drive one bidirectional brushed DC motor, two unidirectional brushed DC motors, or other resistive and inductive loads. It features an N-channel H-bridge configuration with integrated current sensing and regulation, making it suitable for a wide range of applications requiring precise motor control and protection.
The DRV8876PWPR includes a charge pump regulator that enhances efficiency by allowing both high-side and low-side N-channel MOSFETs and supports 100% duty cycle operation. The device also offers ultra-low power sleep mode, reducing quiescent current draw to less than 1 µA at 24 V and 25°C, and incorporates spread spectrum clocking to minimize electromagnetic interference (EMI).
Key Specifications
| Parameter | Value |
|---|---|
| Operating Supply Voltage | 4.5 V to 37 V |
| Peak Output Current | 3.5 A |
| On-Resistance (RDS(on)) | 700 mΩ (High-Side + Low-Side) |
| Logic Input Voltage | 1.8 V, 3.3 V, and 5 V |
| Control Modes | PH/EN, PWM H-bridge, Independent Half-Bridge |
| Current Regulation | Selectable cycle-by-cycle or fixed off-time |
| Protection Features | Undervoltage Lockout (UVLO), Charge Pump Undervoltage (CPUV), Overcurrent Protection (OCP), Thermal Shutdown (TSD) |
| Package Options | 16-Pin HTSSOP, 16-Pin VQFN |
| Quiescent Current in Sleep Mode | <1 µA @ VVM = 24 V, TJ = 25°C |
Key Features
- Integrated current sensing and regulation with proportional current output (IPROPI)
- Selectable current regulation modes (IMODE) including cycle-by-cycle or fixed off-time
- Selectable input control modes (PMODE) including PH/EN, PWM H-bridge, and independent half-bridge control
- Ultra-low power sleep mode with quiescent current draw of less than 1 µA
- Spread spectrum clocking for reduced electromagnetic interference (EMI)
- Integrated protection features such as undervoltage lockout (UVLO), charge pump undervoltage (CPUV), overcurrent protection (OCP), and thermal shutdown (TSD)
- Automatic fault recovery and fault indicator pin (nFAULT)
- Supports 100% duty cycle operation
Applications
- Brushed DC motors in various industrial and consumer applications
- Major and small home appliances
- Vacuum cleaners and other household devices
- Humanoid robots and other robotic systems
- Automotive systems requiring motor control
- Other resistive and inductive loads
Q & A
- What is the operating supply voltage range of the DRV8876PWPR?
The operating supply voltage range is from 4.5 V to 37 V.
- What is the peak output current capability of the DRV8876PWPR?
The peak output current capability is 3.5 A.
- What are the available control modes for the DRV8876PWPR?
The available control modes include PH/EN, PWM H-bridge, and independent half-bridge control.
- Does the DRV8876PWPR have integrated protection features?
Yes, it includes undervoltage lockout (UVLO), charge pump undervoltage (CPUV), overcurrent protection (OCP), and thermal shutdown (TSD).
- How does the DRV8876PWPR reduce electromagnetic interference (EMI)?
It uses spread spectrum clocking to minimize EMI.
- What is the quiescent current draw in sleep mode?
The quiescent current draw is less than 1 µA at VVM = 24 V and TJ = 25°C.
- Can the DRV8876PWPR drive multiple motors?
Yes, it can drive one bidirectional brushed DC motor or two unidirectional brushed DC motors.
- What is the purpose of the IPROPI pin?
The IPROPI pin sources a small current that is proportional to the current in the MOSFETs, which can be used to detect motor stall or changes in load conditions.
- Does the DRV8876PWPR support 100% duty cycle operation?
Yes, it supports 100% duty cycle operation.
- What are the package options available for the DRV8876PWPR?
The package options include 16-Pin HTSSOP and 16-Pin VQFN.
