MC33937APEKR2

Overview

The MC33937APEKR2 is a three-phase Field Effect Transistor (FET) pre-driver utilizing SMARTMOS technology. It integrates three high-side and three low-side FET pre-drivers with an integrated charge pump for full drive at low battery voltages. The device supports 5.0 V and 3.0 V logic level inputs and provides 5.0 V outputs. It interfaces with microcontrollers via six direct input control signals, an SPI port for setup, and asynchronous reset/enable/interrupt signals. Fully specified from 8.0 to 40 V for 12/24 V automotive systems, with an extended range of 6.0 to 58 V covering 12/42 V systems. It offers greater than 1.0 A gate drive capability.

Feature Summary

• Integrated charge pump ensures full external FET drive capability even at low battery voltages
• Programmable deadtime via SPI interface to prevent cross-conduction in power stages
• Protection against reverse charge injection from external FET capacitances (CGD and CGS)
• Supports both parallel direct input control and serial SPI configuration modes

Applications

• Three-phase motor control in automotive applications
• 12 V and 24 V automotive system actuation
• 12 V and 42 V extended voltage automotive systems
• General industrial motor drive pre-driving

Procurement Notes

Verify the specific suffix 'APEKR2' against the official NXP datasheet to confirm package type, temperature grade, and reel quantity specifications. Ensure the ordering part number matches the exact revision required for your design. Confirm compliance with the NXP Product Longevity Program status for long-term supply assurance. Cross-reference the datasheet revision date to ensure all errata and mask revisions are accounted for in your production timeline.

Selection Notes

Select this component when designing three-phase motor drives requiring integrated high and low-side pre-driving with robust protection features. It is suitable for MCU-based control systems needing both direct parallel inputs and SPI configurability. Consider the extended voltage range if operating in 42 V automotive environments or harsh industrial conditions. Evaluate the need for programmable deadtime and reverse charge injection protection as key differentiators for reliable FET switching.

Part Context

The MC33937 belongs to NXP's portfolio of gate drivers and power management ICs designed for electrification and automotive applications. It complements NXP's S32K series microcontrollers, which often handle the high-level control algorithms for such motor drives. As a pre-driver, it sits between the logic controller and the external power MOSFETs, simplifying the design of robust half-bridge configurations for traction inverters or auxiliary pumps.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult NXP sales or technical support for qualified alternatives or obsolescence notices.