DRV8801PWP

Technology:	DMOS
Base Part Number:	DRV8801
Supplier Device Package:	16-HTSSOP
Package / Case:	16-TSSOP (0.173", 4.40mm Width) Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 150°C (TJ)
Voltage - Load:	8 V ~ 38 V
Voltage - Supply:	8 V ~ 38 V
Current - Output:	2.8A
Applications:	General Purpose
Step Resolution:	--
Series:	--
Interface:	Parallel
Output Configuration:	Half Bridge (2)
Function:	Driver - Fully Integrated, Control and Power Stage
Motor Type - AC, DC:	Brushed DC
Motor Type - Stepper:	Bipolar
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tube

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DRV8801PWP Application Field and Working Principle

Motor drivers, controllers, and power management systems are installed in many electronic devices, including cell phones, computers, and cars. The DRV8801PWP is a low voltage motor driver integrated circuit (IC) specifically designed for battery operated applications. It uses a microstepping technique to precisely control the speed, position and direction of a motor while providing robust protection against short circuits and overloads. This article will discuss the application field and the working principle of the DRV8801PWP.

Application Field

The DRV8801PWP is a single-chip motor driver and power management IC which provides a cost-effective solution for controlling small motors in battery-powered applications. It is ideal for products like robots, hand-held tools, medical equipment and toys, where a high degree of accuracy and control of the motor is desired. The IC also includes diagnostics for protection, including over-temperature, under-current, over-current and over-voltage protection.

Working Principle

The DRV8801PWP works by converting an input voltage into motor control signals, or pulse-width modulated (PWM) signals. These PWM signals control the motor speed and direction. The IC is designed to drive brushed DC motors and stepper motors in microstepping mode. Depending on the application, the DRV8801PWP can be used as a dual-channel H-bridge motor driver, a single-channel H-bridge motor driver, a dual-channel PWM-on-demand motor driver, or a single-channel PWM-only motor driver. When in H-bridge mode, the DRV8801PWP takes two digital inputs, a PWM signal, and a logic signal to control the direction of the motor. The logic signal determines the direction of the motor, and the PWM signal is used to regulate the speed. The dual-channel PWM-on-demand mode is designed to enable the motor speed to be precisely controlled and allows the motor to follow quickly changing reference signals. The single-channel PWM-only mode is designed for controlling the speed of small brushed DC motors. The IC takes a PWM signal as an input and uses a comparator to regulate and modulate the applied voltage. This enables the DRV8801PWP to achieve a wide range of motor speeds from low to high. The DRV8801PWP also comes with various protection features to prevent overloading, over-voltage, over-temperature, and under-current. The IC features a thermal overload indicator which monitors the internal die temperature and warns the user of any increase in temperature that could lead to detrimental effects on the system performance and reliability.

Conclusion

The DRV8801PWP is a powerful motor driver and power management IC which provides a cost-effective solution for controlling small motors in battery-powered applications. Its microstepping technique enables precise control of the motor speed, position, and direction while offering protection against short circuits and overloads. The IC can be used in H-bridge, PWM-on-demand, and PWM-only modes, and provides protection against over-temperature, under-current, over-current, and over-voltage. It is an ideal solution for products like robots, hand-held tools, medical equipment and toys that require precise motor control.

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