Three Phase FET Pre-driver | NXP Semiconductors

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The NXP^® MC34937A is a field effect transistor (FET) pre-driver designed for three-phase motor control and similar applications.

The integrated circuit (IC) uses SMARTMOS^® technology
The IC contains three high side FET pre-drivers and three low side FET pre-drivers
Three external bootstrap capacitors provide gate charge to the high side FETs
The IC interfaces to a MCU via six direct input control signals, a SPI port for device setup and fault detection, an asynchronous reset, an interrupt and two enable signals
Both 5 and 3 V logic level inputs are accepted and 5 V logic level outputs are provided

Product Details

Extended supply voltage operating range: 6 to 58 V
Wide dead time range (50 ns to 12 μs) programmable via the SPI port
External FET gate drive capability of >1.0 A with protection
Charge pump ensures sufficient external FET drive at low supply voltages
Device protection against reverse charge-injection from CGD and CGS of external FETS
Integrated overcurrent, desaturation, and phase fault-detection
Immunity against positive or negative transient voltage spikes on the gate driver
Current shoot-through protection built into dead time control
Supports direct 3.3 V and 5 V logic interface to MCUs
Integrated current sensing amplifier
Device configuration and diagnostics through the SPI
Parallel, SPI interface and input control
Load current(IL) 1 A (Typ)
6 Channels
Drain-to-Source on resistance 0, 5500 mOhm RDS(ON) (Typ)

Part numbers include: MC34937APEK.

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Quick reference to our documentation types.

4 documents

^{Application Note}
AN2409, Small Outline Integrated Circuit (SOIC) Package - Application NoteFeatured

PDFRev 3.0Oct 21, 20143.5 MBAN2409English
^{Data Sheet}
MC34937, Three Phase Field Effect Transistor Pre-driver - Data SheetFeatured

PDFRev 4.0Apr 30, 20191.2 MBMC34937English
^{Application Note}
AN3670, Implementing a DSI Network Using the MC33781 and the MC33784

PDFRev 1.0Oct 29, 20081.0 MBAN3670English
^{Selector Guide}
Motor Driver – Selector Guide

PDFRev 13Feb 4, 2021197.6 KBMOTORDRIVERFLYREnglish

Quick reference to our board types.

2 hardware offerings

^{Evaluation and Development Boards}
Evaluation Kit - 33937, Three-Phase FET Pre-DriverFeatured

KIT33937AEKEVBE
^{Evaluation and Development Boards}
Low-Voltage, 3-Phase Motor Control Tower^® System Module

TWR-MC-LV3PH

Quick reference to our software types.

1 software file

Note: For better experience, software downloads are recommended on desktop.