Datasheet > MC34937APEK

MC34937APEK

更新时间： 2024-11-26 12:05:59

品牌	Logo	应用领域
飞思卡尔 - FREESCALE		晶体驱动器晶体管场效应晶体管
页数	文件大小	规格书
49页	733K
描述
Three Phase Field Effect Transistor Pre-driver

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MC34937APEK 数据手册

Document Number: MC34937

Rev. 2.0, 9/2013

Freescale Semiconductor

Technical Data

Three Phase Field Effect

Transistor Pre-driver

34937A

Industrial

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 technology.

THREE PHASE PRE-DRIVER

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, an

SPI port for device setup and asynchronous reset, enable and

interrupt signals. Both 5.0 and 3.0 V logic level inputs are accepted

and 5.0 V logic level outputs are provided.

Features

• Extended supply voltage operating range: 6.0 to 58 V

• Wide dead time range (50 ns to 12 s) programmable via the SPI

port

EK SUFFIX (Pb-FREE)

98ASA99334D

54-PIN SOICW-EP

• 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 C_GDand

C_GSof external FETS

• Integrated overcurrent, desaturation, and phase fault-detection

• Immunity against positive or negative transient voltage spikes on

the gate driver

Applications

• 12 V - 48 V 3-phase brushless DC (BLDC) motors

and permanent magnet synchronous motors (PMSM)

• E-Bike, hospital beds, electric chair/scooter

• CPAPs, inflation pumps, industrial fans

• Portable power tools, commercial fans/blowers

• Small kitchen appliances

• Current shoot-through protection built into dead time control

• Supports direct 3.3 V and 5.0 V logic interface to MCUs

• Integrated current sensing amplifier

• Device configuration and diagnostics through the SPI

SYS

34937

VPUMP

PUMP

VSUP

PA_HS_G

PB_HS_G

PC_HS_G

VPWR

VLS

VDD

VSS

PA_HS_S

PB_HS_S

PC_HS_S

PX_HS

PX_LS

PHASEX

PA_LS_G

PB_LS_G

PC_LS_G

MCU

DSP

SCLK

PX_LS_S

RST

INT

EN1

EN2

AMP_P

AMP_N

AMP_OUT

SEN

GND

Figure 1. 34937A Simplified Application Diagram

Freescale Semiconductor, Inc. reserves the right to change the detail specifications,

as may be required, to permit improvements in the design of its products.

12 3 4 5 6 7...49

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