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HR3988 - Quad DMOS Full Bridge PWM Motor Driver

Description

The HR3988 is a quad DMOS full-bridge driver capable of driving up to two stepper motors or four DC motors.

Each full-bridge output is rated up to 1.2 A and 36 V.

Features

  • 36 V output rating.
  • 4 full bridges.
  • Dual stepper motor driver.
  • High current outputs.
  • 3.3 and 5 V compatible logic supply.
  • Synchronous rectification.
  • Internal under voltage lockout (UVLO).
  • Thermal shutdown circuitry.
  • Crossover-current protection. Packages TQFP48 with exposed thermal pad Figure 1. Typical.

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Datasheet Details

Part number HR3988
Manufacturer HEROIC
File Size 618.74 KB
Description Quad DMOS Full Bridge PWM Motor Driver
Datasheet download datasheet HR3988 Datasheet

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Full PDF Text Transcription

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HR3988 Quad DMOS Full Bridge PWM Motor Driver Description The HR3988 is a quad DMOS full-bridge driver capable of driving up to two stepper motors or four DC motors. Each full-bridge output is rated up to 1.2 A and 36 V. The HR3988 includes fixed off-time pulse width modulation (PWM) current regulators, along with 2-bit nonlinear DACs (digital-to-analog converters) that allow stepper motors to be controlled in full, half, and quarter steps, and DC motors in forward, reverse, and coast modes. The PWM current regulator uses the mixed decay mode for reduced audible motor noise, increased step accuracy, and reduced power dissipation. Internal synchronous rectification control circuitry is provided to improve power dissipation during PWM operation.
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