Texas Instruments DRV8813PWP

Overview

DRV8813PWP from Texas Instruments is a dual H-bridge motor controller IC designed for bipolar stepper and dual DC motor drive in automated equipment. It operates from 8.2 V to 45 V, delivers up to 2.5-A peak output current per bridge at 24 V/25°C, supports four-level winding current control (100%/71%/38%/0%), and integrates programmable decay modes (fast/slow/mixed) with fault reporting via open-drain nFAULT.

For engineers reviewing the DRV8813PWP datasheet, DRV8813PWP pinout, DRV8813PWP application, or DRV8813PWP equivalent, this page provides verified technical context on H-bridge logic, current regulation architecture, thermal shutdown behavior, and HTSSOP-28 package layout constraints - all critical for motion control system integration and PCB layout validation.

Technical Context

The DRV8813PWP implements two independent NMOS H-bridge drivers with integrated current-sense amplifiers (5× gain), fixed-frequency PWM current regulation, and blanking time of 3.75 µs. Each bridge uses external sense resistors and user-configurable 2-bit DAC inputs (AI0/AI1, BI0/BI1) to set winding current at 100%, 71%, 38%, or 0% of full scale.

Decay mode selection (DECAY pin) governs recirculation behavior during off-time: logic low enables slow decay (both LS FETs on), high enables fast decay (H-bridge reversal), and open state enables mixed decay (75% fast + 25% slow). Protection includes overcurrent detection independent of sense resistor value, thermal shutdown at 150–180°C, and VM undervoltage lockout at 7.8–8.2 V.

Key Specifications

Pinout & Package

DRV8813PWP is housed in a 28-pin HTSSOP package (9.70 mm × 4.40 mm) with exposed PowerPAD™ thermal pad for enhanced heat dissipation. The package is RoHS-compliant and lead-free.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual H-bridge motor control applications.

Compared with TB6612FNG and DRV8825, DRV8813PWP uniquely balances industrial-grade voltage tolerance, independent dual-bridge configurability, and mixed-decay optimization - making it optimal for office automation and ATM motion systems requiring field-proven reliability and flexible current management.

Availability

DRV8813PWP is available at Aetrix Electronics and suitable for printers, video security cameras, and automatic teller machines requiring stable component supply, long-term industrial lifecycle support, and consistent thermal performance across ambient temperatures from –40°C to +85°C.

Supply support for DRV8813PWP includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and power management technologies, with decades of expertise in motor control IC design and industrial-grade reliability validation.

The DRV8813PWP belongs to TI's high-voltage motor driver product line, engineered specifically for cost-sensitive, thermally demanding motion control applications in office automation, banking equipment, and surveillance systems where dual-bridge independence and programmable decay are essential.

FAQ

What is the maximum continuous operating voltage for DRV8813PWP?

The DRV8813PWP supports a continuous motor supply voltage range of 8.2 V to 45 V across VMA and VMB pins. Absolute maximum rating is 50 V, but sustained operation above 45 V violates recommended conditions and risks permanent damage. All VM pins must be connected to the same supply rail and bypassed with 0.1-µF ceramic capacitors per pin.

How does the DRV8813PWP implement current regulation for stepper motors?

The DRV8813PWP uses fixed-frequency PWM current chopping with a 5× gain current sense amplifier. The trip threshold (V_TRIP) is set by xVREF voltage and scaled by AI0/AI1 or BI0/BI1 bits. For example, with AVREF = 2.5 V and R_SENSE = 0.25 Ω, full-scale current is 2.5 V / (5 × 0.25 Ω) = 2 A. DRV8813PWP applies this regulation independently per bridge to maintain precise winding current during stepping.

Can DRV8813PWP drive two separate DC motors simultaneously?

Yes, DRV8813PWP is explicitly designed to drive two brushed DC motors concurrently. Bridge A (AENBL/APHASE/AOUT1/AOUT2) and Bridge B (BENBL/BPHASE/BOUT1/BOUT2) operate independently with separate enable, direction, and current control inputs. Each bridge supports up to 2.5-A peak current, enabling bidirectional control of motors such as 24-V DC gearmotors in ATM bill transport or scanner conveyors.

What thermal management is required for DRV8813PWP in a 2.5-A load application?

At 2.5-A peak per bridge and 24 V, DRV8813PWP dissipates ≈3.2 W total (based on R_DS(ON) ≈ 0.65 Ω). With R_θJA = 31.6 °C/W, junction temperature rise exceeds safe limits without thermal enhancement. Aetrix recommends using the exposed PowerPAD™ with ≥4 thermal vias to inner ground planes, 2 oz copper, and ≥2 cm² copper pour. Derate current by 10% above 60°C ambient.

Does DRV8813PWP support microstepping, and if so, how?

DRV8813PWP does not include built-in microstepping logic, but enables software-controlled microstepping via its four-level current regulation. By dynamically switching AI0/AI1 or BI0/BI1 between 100%/71%/38%/0% settings synchronized with step pulses, external controllers can approximate 1/2, 1/3, or 1/4 microsteps. This method requires precise timing from the host MCU but avoids dedicated microstepping ICs while retaining full bridge control flexibility in DRV8813PWP.