Three Phase FET Pre-driver | NXP Semiconductors

Automotive

Industrial

Consumer

Technologies

Three Phase Field Effect Transistor Pre-driver

MC34937 Active

Roll over image to zoom in

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

Block Diagram

NXP MC34937 Internal Block Diagram

NXP MC34937 Internal Block Diagram
Get diagram PDF

Features

System Features

  • 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)

Buy/Parametrics

1 result

Include 0 NRND

Part

Show description

Order

CAD Model

Status

Device Function

Budgetary Price excluding tax

Package Termination Count

Package Type

Load Current (IL) [TYP] (A)

Number of Channels

Drain-to-Source On Resistance (Typ) (mOhm) (RDS(ON))

Load Supply Voltage (Min) (V)

Load Supply Voltage (Max) (V)

Supply Voltage [min] (V)

Supply Voltage [max] (V)

Interface and Input Control

Ambient Operating Temperature (Min to Max) (℃)

MC34937APEK
Data Sheet

Active

3 phase, gate driver

1K @ US$2.69

54

HSOP54

1

6

0, 5500

6

58

8

40

Parallel / Parallel, SPI / SPI

-40 to 125

N true 0 PSPMC34937en 4 Application Note Application Note t789 2 Data Sheet Data Sheet t520 1 Selector Guide Selector Guide t528 1 en_US 2 1 3.0 English This application note provides guidelines for handling and assembly of SOIC package during Printed Circuit Board (PCB) assembly. 10jsBvfc PSP 3.5 MB None None documents None 10jsBvfc /docs/en/application-note/AN2409.pdf 3536520 /docs/en/application-note/AN2409.pdf AN2409 N N 2016-10-31 AN2409, Small Outline Integrated Circuit (SOIC) Package - Application Note /docs/en/application-note/AN2409.pdf /docs/en/application-note/AN2409.pdf Application Note N Y 645036621402383989 2024-01-19 pdf N en Oct 21, 2014 Application Note t789 Application Note Application Note Y N AN2409, Small Outline Integrated Circuit (SOIC) Package - Application Note 2 4.0 English The 34937A is a field effect transistor (FET) pre-drivers designed for three phase motor control and similar applications. The integrated circuit (IC) uses SMARTMOS<sup>&#174;</sup> technology. 1373908278614705534655 PSP 1.2 MB None None documents None 1373908278614705534655 /docs/en/data-sheet/MC34937.pdf 1233624 /docs/en/data-sheet/MC34937.pdf MC34937 N N 2019-05-01 MC34937, Three Phase Field Effect Transistor Pre-driver - Data Sheet /docs/en/data-sheet/MC34937.pdf /docs/en/data-sheet/MC34937.pdf Data Sheet N Y 980000996212993340 2022-12-07 pdf N en Apr 30, 2019 Data Sheet t520 Data Sheet Data Sheet Y N MC34937, Three Phase Field Effect Transistor Pre-driver - Data Sheet false en_US en Application Note Application Note 1 3 1.0 English The MC33781 and MC33784 together constitute NXP Semiconductors's implementation of the Distributed System Interface (DSI) Bus Standard, Version 2.02. 1225311007711718167766 PSP 1.0 MB None None documents None 1225311007711718167766 /docs/en/application-note/AN3670.pdf 1013814 /docs/en/application-note/AN3670.pdf AN3670 documents N N 2016-10-31 AN3670, Implementing a DSI Network Using the MC33781 and the MC33784 /docs/en/application-note/AN3670.pdf /docs/en/application-note/AN3670.pdf Application Note N 645036621402383989 2024-01-19 pdf N en Oct 29, 2008 645036621402383989 Application Note Y N AN3670, Implementing a DSI Network Using the MC33781 and the MC33784 Selector Guide Selector Guide 1 4 13 English For system designers that want more efficient motor operation with variable speed and sensorless control, NXP offers H-Bridge, brushed and brushless DC motor drivers required to complete system design. 1440175950835712338186 PSP 197.6 KB None None documents None 1440175950835712338186 /docs/en/product-selector-guide/MOTORDRIVERFLYR.pdf 197574 /docs/en/product-selector-guide/MOTORDRIVERFLYR.pdf MOTORDRIVERFLYR documents N N 2016-10-31 Motor Driver – Selector Guide /docs/en/product-selector-guide/MOTORDRIVERFLYR.pdf /docs/en/product-selector-guide/MOTORDRIVERFLYR.pdf Selector Guide N 553557935274807777 2024-08-11 pdf N en Feb 4, 2021 553557935274807777 Selector Guide Y N Motor Driver – Selector Guide false 0 MC34937 downloads en true 1 Y PSP Y Y Application Note 2 /docs/en/application-note/AN3670.pdf 2016-10-31 1225311007711718167766 PSP 3 Oct 29, 2008 Application Note The MC33781 and MC33784 together constitute NXP Semiconductors's implementation of the Distributed System Interface (DSI) Bus Standard, Version 2.02. None /docs/en/application-note/AN3670.pdf English documents 1013814 None 645036621402383989 2024-01-19 N /docs/en/application-note/AN3670.pdf AN3670, Implementing a DSI Network Using the MC33781 and the MC33784 /docs/en/application-note/AN3670.pdf documents 645036621402383989 Application Note N en None Y pdf 1.0 N N AN3670, Implementing a DSI Network Using the MC33781 and the MC33784 1.0 MB AN3670 N 1225311007711718167766 /docs/en/application-note/AN2409.pdf 2016-10-31 10jsBvfc PSP 1 Oct 21, 2014 Application Note Application Note This application note provides guidelines for handling and assembly of SOIC package during Printed Circuit Board (PCB) assembly. None /docs/en/application-note/AN2409.pdf English 3536520 None Application Note 2024-01-19 N /docs/en/application-note/AN2409.pdf AN2409, Small Outline Integrated Circuit (SOIC) Package - Application Note /docs/en/application-note/AN2409.pdf documents 645036621402383989 Application Note N Y en None Y t789 pdf 3.0 N N AN2409, Small Outline Integrated Circuit (SOIC) Package - Application Note 3.5 MB AN2409 N 10jsBvfc Data Sheet 1 /docs/en/data-sheet/MC34937.pdf 2019-05-01 1373908278614705534655 PSP 2 Apr 30, 2019 Data Sheet Data Sheet The 34937A is a field effect transistor (FET) pre-drivers designed for three phase motor control and similar applications. The integrated circuit (IC) uses SMARTMOS<sup>&#174;</sup> technology. None /docs/en/data-sheet/MC34937.pdf English 1233624 None Data Sheet 2022-12-07 N /docs/en/data-sheet/MC34937.pdf MC34937, Three Phase Field Effect Transistor Pre-driver - Data Sheet /docs/en/data-sheet/MC34937.pdf documents 980000996212993340 Data Sheet N Y en None Y t520 pdf 4.0 N N MC34937, Three Phase Field Effect Transistor Pre-driver - Data Sheet 1.2 MB MC34937 N 1373908278614705534655 Selector Guide 1 /docs/en/product-selector-guide/MOTORDRIVERFLYR.pdf 2016-10-31 1440175950835712338186 PSP 4 Feb 4, 2021 Selector Guide For system designers that want more efficient motor operation with variable speed and sensorless control, NXP offers H-Bridge, brushed and brushless DC motor drivers required to complete system design. None /docs/en/product-selector-guide/MOTORDRIVERFLYR.pdf English documents 197574 None 553557935274807777 2024-08-11 N /docs/en/product-selector-guide/MOTORDRIVERFLYR.pdf Motor Driver – Selector Guide /docs/en/product-selector-guide/MOTORDRIVERFLYR.pdf documents 553557935274807777 Selector Guide N en None Y pdf 13 N N Motor Driver – Selector Guide 197.6 KB MOTORDRIVERFLYR N 1440175950835712338186 true Y Products

Documentation

Quick reference to our documentation types.

Filters

4 documents

Compact List

Design Files

Hardware

Quick reference to our board types.
Filters

2 hardware offerings

Software

Quick reference to our software types.

Filters

1 software file

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

Support

What do you need help with?

Search