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DRV8885

DRV8885 Series

37-V, 1.5-A bipolar stepper motor driver with integrated current sensing & 1/16 microstepping

Manufacturer: Texas Instruments

Catalog

37-V, 1.5-A bipolar stepper motor driver with integrated current sensing & 1/16 microstepping

Key Features

PWM microstepping stepper motor driverUp to 1/16 microsteppingNon-circular and standard ½ step modesIntegrated current sense functionalityNo sense resistors required±6.25% Full-scale current accuracySlow and mixed decay options8.0- to 37-V Operating supply voltage rangeLow RDS(ON): 0.86 Ω HS + LS at 24 V, 25°CHigh current capacity1.5-A Full scale per bridge1.0-A rms per bridgeFixed off-time PWM choppingSimple STEP/DIR interfaceLow-current sleep mode (20 µA)Small package and footprint24 HTSSOP PowerPAD™ package28 WQFN packageProtection featuresVM undervoltage lockout (UVLO)Charge pump undervoltage (CPUV)Overcurrent protection (OCP)Thermal shutdown (TSD)Fault condition indication pin (nFAULT)PWM microstepping stepper motor driverUp to 1/16 microsteppingNon-circular and standard ½ step modesIntegrated current sense functionalityNo sense resistors required±6.25% Full-scale current accuracySlow and mixed decay options8.0- to 37-V Operating supply voltage rangeLow RDS(ON): 0.86 Ω HS + LS at 24 V, 25°CHigh current capacity1.5-A Full scale per bridge1.0-A rms per bridgeFixed off-time PWM choppingSimple STEP/DIR interfaceLow-current sleep mode (20 µA)Small package and footprint24 HTSSOP PowerPAD™ package28 WQFN packageProtection featuresVM undervoltage lockout (UVLO)Charge pump undervoltage (CPUV)Overcurrent protection (OCP)Thermal shutdown (TSD)Fault condition indication pin (nFAULT)

Description

AI
The DRV8885 is a stepper motor driver for industrial equipment applications. The device has two N-channel power MOSFET H-bridge drivers, a microstepping indexer, and integrated current sense. The DRV8885 is capable of driving up to 1.5 A full scale or 1.0 A rms output current (depending on proper PCB ground plane for thermal dissipation and at 24 V and TA= 25°C). The DRV8885 integrated current sense functionality eliminates the need for two external sense resistors. The STEP/DIR pins provide a simple control interface. The device can be configured in full-step up to 1/16 step modes. A low-power sleep mode is provided for very-low quiescent current standby using a dedicated nSLEEP pin. Internal protection functions are provided for undervoltage, charge pump faults, overcurrent, short circuits, and overtemperature. Fault conditions are indicated by an nFAULT pin. The DRV8885 is a stepper motor driver for industrial equipment applications. The device has two N-channel power MOSFET H-bridge drivers, a microstepping indexer, and integrated current sense. The DRV8885 is capable of driving up to 1.5 A full scale or 1.0 A rms output current (depending on proper PCB ground plane for thermal dissipation and at 24 V and TA= 25°C). The DRV8885 integrated current sense functionality eliminates the need for two external sense resistors. The STEP/DIR pins provide a simple control interface. The device can be configured in full-step up to 1/16 step modes. A low-power sleep mode is provided for very-low quiescent current standby using a dedicated nSLEEP pin. Internal protection functions are provided for undervoltage, charge pump faults, overcurrent, short circuits, and overtemperature. Fault conditions are indicated by an nFAULT pin.