DRV8436E

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48-V, 1.5-A bipolar stepper or dual brushed  motor driver with integrated current sensing

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Product details

Parameters

Number of full bridges 2 Vs (Min) (V) 4.5 Vs (Max) (V) 45 Full-scale current (A) 1.5 Peak output current (A) 2.5 RDS(ON) (HS + LS) (mOhms) 900 Control mode PH/EN, PWM Control interface Hardware (GPIO) 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) 24 - open-in-new Find other Stepper motor drivers

Features

  • Dual H-bridge motor driver
    • One bipolar stepper motor
    • Dual brushed-DC motors
  • Integrated current sense functionality
    • No sense resistors required
    • ±7.5% Full-scale current accuracy
  • 4.5- to 48-V Operating supply voltage range
  • Multiple control interface options
    • PHASE/ENABLE
    • PWM
  • Smart tune decay technology, fixed slow and mixed decay options
  • Low RDS(ON):
    • 900 mΩ HS + LS at 24 V, 25°C (DRV8436E/P)
    • 1200 mΩ HS + LS at 24 V, 25°C (DRV8437E/P)
  • High Current Capacity Per Bridge
    • DRV8436E/P: 2.5-A peak, 1.5-A Full-Scale, 1.1-A rms
    • DRV8437E/P: 1.9-A peak, 1.1-A Full-Scale, 0.8-A rms
  • Configurable Off-Time PWM Chopping
    • 7, 16, 24 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)
    • Thermal shutdown (OTSD)
    • Fault condition output (nFAULT)

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Description

The DRV8436E/P, DRV8437E/P devices are dual H-bridge motor drivers for industrial applications. The devices can be used for driving two DC motors, or a bipolar stepper motor. The output stage of the driver consists of N-channel power MOSFETs configured as two full H-bridges. The DRV8436E/P is capable of driving up to 1.5-A full scale or 1.1-A rms output current per H-bridge; and the DRV8437E/P is capable of driving up to 1.1-A full scale or 0.8-A rms output current per H-bridge (dependent on PCB design).

The devices use an internal current sense architecture to eliminate the need for two external power sense resistors, saving PCB area and system cost. The devices use 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.

The PH/EN (DRV8436E/DRV8437E) or PWM (DRV8436P/DRV8437P) pins provide a simple control interface. A low-power sleep mode is provided for very-low quiescent current standby using a dedicated nSLEEP pin. Device protection features are provided for supply undervoltage, charge pump faults, overcurrent, short circuits 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 (PDRV8436EPWPR and PDRV8436EPWPR).  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

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HTSSOP (PWP) 24 View options

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