MC33996EKR2

Overview

The MC33996EKR2 is a high-reliability automotive dual H-bridge pre-driver IC designed for driving large current DC motors, stepper motors, and solenoids. It integrates gate drive logic, fault protection, and diagnostic functions to reduce MCU burden. The device operates within a supply voltage range of 4.5V to 28V and supports SPI communication at speeds up to 10MHz. Key electrical parameters include a peak output current of 4.5A and continuous current of 2.5A per channel. It features an active low FAULT signal and complies with AEC-Q100 Grade 2 standards for temperatures between -40°C and +105°C.

Feature Summary

• Integrates complex gate drive logic and hardware-level fault protection mechanisms for inductive loads
• Provides direct SPI interface support for millisecond-level status reading and command execution
• Includes dedicated open-drain FAULT output for immediate error signaling to the microcontroller

Applications

• Electric Power Steering (EPS) systems
• Electronic Brake Systems (EBS)
• Smart cabin actuators
• Industrial automation motor control

Procurement Notes

Verify that the specific ordering suffix matches the required package type and temperature grade. Confirm compatibility with the target microcontroller's SPI clock speed and voltage levels before integration. Ensure proper thermal management design is implemented given the power dissipation requirements during high-current operation.

Selection Notes

Select this component when driving high-current inductive loads such as DC motors or solenoids requiring integrated H-bridge control. It is suitable for applications demanding reduced software complexity and robust hardware-level diagnostics. Consider the SOIC-44 package constraints and ensure adequate PCB space for thermal relief pads associated with the exposed pad design.

Part Context

This part belongs to NXP's automotive-grade power driver family, specifically engineered for safety-critical vehicle subsystems. It replaces discrete MOSFET driver solutions by consolidating control logic and protection circuits into a single chip. The series is optimized for environments requiring high electromagnetic compatibility and long-term reliability under harsh thermal conditions.

Replacement Considerations

Direct pin-to-pin replacements are limited due to the specific integration of gate drive logic and diagnostic registers. Evaluate alternative NXP H-bridge drivers based on current rating and interface compatibility rather than simple substitution.