DRV8436

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48-V, 1.5-A bipolar stepper motor driver with integrated current sensing & 1/256 microstepping

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Product details

Parameters

Number of full bridges 2 Vs (Min) (V) 4.5 Vs (Max) (V) 48 Full-scale current (A) 1.5 Peak output current (A) 2.5 RDS(ON) (HS + LS) (mOhms) 900 Control mode STEP/DIR Control interface Hardware (GPIO) Micro-stepping levels 256 Features Integrated Current Sensing, Smart Tune Approx. price (US$) 1.19 | 1ku open-in-new Find other Stepper motor drivers

Package | Pins | Size

HTSSOP (PWP) 28 - open-in-new Find other Stepper motor drivers

Features

  • PWM microstepping stepper motor driver
    • Simple STEP/DIR interface
    • Up to 1/256 Microstepping indexer
  • Integrated current sense functionality
    • No sense resistors required
    • ±7.5% Full-scale current accuracy
  • Smart tune decay technology, Fixed slow, and mixed decay options
  • 4.5 to 48-V Operating supply voltage range
  • Low RDS(ON): 900 mΩ HS + LS at 24 V, 25°C
  • High current capacity per bridge: 2.4 A peak, 1.5 A Full-Scale, 1.1 A rms
  • Configurable off-time PWM chopping
    • 7-µs, 16-µs, 24-µs, or 32-µs.
  • Supports 1.8-V, 3.3-V, 5.0-V logic inputs
  • Low-current sleep mode (2 µA)
  • Small package and footprint
  • Protection features
    • VM undervoltage lockout (UVLO)
    • Charge pump undervoltage (CPUV)
    • Overcurrent protection (OCP)
    • Open load detection (OL)
    • Thermal shutdown (OTSD)
    • Fault condition output (nFAULT)

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Description

The DRV8436 is a stepper motor driver for industrial and consumer end equipment applications. The device is fully integrated with two N-channel power MOSFET H-bridge drivers, a microstepping indexer, and integrated current sensing. The DRV8436 is capable of driving up to 1.1-A rms (dependent on PCB design).

The DRV8436 uses an internal current sense architecture to eliminate the need for two external power sense resistors, saving PCB area and system cost. The device uses an internal PWM current regulation scheme selectable between smart tune, fast, slow and mixed decay options. Smart tune decay technology automatically adjusts for optimal current regulation performance and compensates for motor variation and aging effects.

A simple STEP/DIR interface allows an external controller to manage the direction and step rate of the stepper motor. A low-power sleep mode is provided for very low standby quiescent standby current using a dedicated nSLEEP pin. Protection features are provided for supply undervoltage, charge pump faults, overcurrent, short circuits, open load, and overtemperature. Fault conditions are indicated by the nFAULT pin.

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Sample availability and other info

PWP package is in preview. Preproduction samples are available (PDRV8436PWPR).  Request now

Three evaluation modules are available. Request now

Note: DRV8436 HTSSOP has undergone a pin out change from 24 pin to 28 pin making it P2P with the rest of the DRV84xx family. Functionally both the 24 pin and 28 pin version of the DRV8436 is the same.

Technical documentation

Design & development

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HTSSOP (PWP) 28 View options

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