TPIC43T01, TPIC43T02

THREE-PHASE BRUSHLESS MOTOR RPM CONTROLLERS

SLIS098 – APRIL 2000

1

POST OFFICE BOX 655303

Control With Embedded DSP Filter

Algorithm for Loop Compensation

PLL Loop Gain and DSP Filter Coefficients

(Pole/Zero)

Divide-By for Versatile PLL Timebase

Processor Needed

(

±5% Window)

Enabled (TPIC43T01)

Disabled (TPIC43T02)

Inputs/Decode Provide Commutation

Control

Sensor Inputs

Power FETs in Three Half-H Configuration

Drive Voltage

External Current

description

The TPIC43T01/02 is a monolithic motor control integrated circuit designed to provide RPM control to a 3-phase

brushless dc motor. The device provides two analog sensor input ports which include a speed sensor interface

and a Hall effect position interface. The speed feedback interface consists of an FG amplifier to receive an

external sinusoidal signal from a variable reluctance pickup and convert it to a digital speed signal for the control

circuit. When the motor speed is outside a

±5% window of the reference signal, an out-of-lock condition is

declared. The Hall ffect sensor input section receives low-level differential voltages from external naked Hall

elements and converts them to digital position reference signals for the control circuit for commutation control.

The core of the control circuit implements a digital signal processing algorithm consisting of a digital integrator

and filter with user adjustable parameters to optimize the closed loop performance of the control system. The

device contains an internal EEPROM to set integrator gain and digital filter coefficients. In addition, Texas

Instruments provides a PC based Windows

™ compatible software package to input the motor and system

characteristics and convert them to control parameters for the TPIC43T01/02. The software generates a JEDEC

compatible file to program the device through a third party device programmer.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

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IN2+

IN2–

IN3+

IN3–

FGOUT

FGIN–

FGIN+

CLT

CT

RT

OSC2

OSC1

FGSOUT

GND

LD

FSEL

S/S

F/R

IN1–

IN1+

TEST

PHA

UGA

LGA

UGB

PHB

LGB

LGC

UGC

PHC

SENSE

CP2

CP1

PGND

DA PACKAGE

(TOP VIEW)

Copyright

© 2000, Texas Instruments Incorporated

Windows is a trademark of Microsoft Corporation.