DRV8813PWPR: 45V, 2.5A Dual H‑Bridge Stepper Motor Driver – Complete Overview

The DRV8813PWPR from Texas Instruments (TI) is a high‑performance dual H‑bridge motor driver designed for driving bipolar stepper motors or two brushed DC motors. Housed in a 28‑pin HTSSOP package with an exposed PowerPAD™ thermal pad, it operates from 8.2 V to 45 V and delivers up to 2.5 A peak current (or 1.75 A RMS). With its wide voltage range, high output current, and comprehensive protection features, the DRV8813 is widely used in printers, scanners, ATMs, security cameras, factory automation, and robotics.

Key Parameters at a Glance

Parameter	Value	Remarks
Supply Voltage (VM)	8.2 V ~ 45 V	Wide input range
Output Current (Peak)	2.5 A	At 24 V, 25°C
Output Current (RMS)	1.75 A	Requires proper heat sinking
Number of H‑Bridges	2	Drives 1 stepper or 2 DC motors
Control Interface	Parallel digital (PH/EN)	Industry‑standard interface
Current Control	4‑level winding current control	Supports multiple decay modes
Decay Modes	Mixed / Slow / Fast	Programmable
On‑Resistance (Typical)	200 mΩ	Low conduction loss
Built‑in Reference	3.3‑V reference output	No external reference needed
Protection Features	OCP / TSD / UVLO	Overcurrent, thermal, undervoltage
Fault Indicator	nFAULT pin	Fault status output
Operating Temperature	‑40°C ~ +85°C	Industrial grade
Package	HTSSOP‑28 (PowerPAD™)	9.70 mm × 4.40 mm
Sleep Mode	Low‑current sleep mode	Ultra‑low standby power

Typical Applications

With its combination of wide voltage (8.2 V–45 V) , high current (2.5 A) , and dual H‑bridge architecture, the DRV8813PWPR serves a broad range of applications:

Printers and Scanners – Drives stepper motors for paper transport and scan‑head positioning.

ATMs and Currency Handling Equipment – Controls stepper motors in bill‑transport mechanisms.

Security Cameras – Drives pan/tilt motors for PTZ (pan‑tilt‑zoom) functions.

Factory Automation and Robotics – Powers actuators, conveyor motors, and precision motion systems.

Office Automation – Copy machines, fax machines, and other office equipment.

Gaming Machines – Controls various motion mechanisms in gaming devices.

Design Note: The DRV8813 uses the PH/EN parallel control interface, which is compatible with industry‑standard devices, allowing quick implementation without complex communication protocols. The built‑in 3.3‑V reference output can power external logic circuits, further simplifying system design.

Frequently Asked Questions (Q&A)
Q1: How much current can the DRV8813PWPR handle?

A: The DRV8813 can deliver 2.5 A peak current or 1.75 A RMS (root‑mean‑square) current at 24 V and 25°C with adequate heat sinking. Actual continuous output depends on PCB thermal design, ambient temperature, and airflow – always refer to the thermal performance curves in the datasheet for proper evaluation.

Q2: What control modes and decay options are supported?

A: The DRV8813 uses a PH/EN parallel digital control interface and supports 4‑level winding current control. It offers three programmable decay modes: mixed decay, slow decay, and fast decay. Mixed decay is commonly used for stepper motors as it provides good current waveforms across both low‑speed and high‑speed operation.

Q3: What is the purpose of the PowerPAD™ on the HTSSOP‑28 package?

A: The PowerPAD™ is an exposed thermal pad on the bottom of the package that must be soldered to the PCB ground plane for efficient heat dissipation. At high currents (up to 2.5 A), the device generates significant heat – proper thermal design is critical for long‑term reliability.

Q4: What protection features does the DRV8813PWPR include?

A: The device integrates comprehensive protection: overcurrent protection (OCP) , thermal shutdown (TSD) , and VM undervoltage lockout (UVLO) . When a fault occurs, the nFAULT pin is driven low, allowing the host MCU to detect and handle the fault condition.

In summary, the DRV8813PWPR combines a wide input voltage range (8.2 V–45 V) , high output current (2.5 A) , and a dual H‑bridge architecture in a highly integrated package. Whether driving a bipolar stepper motor or two brushed DC motors, it delivers a robust and efficient solution for industrial automation, office equipment, robotics, and beyond.

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