TMC246_06 Datasheet, PDF(7/26 Page) List of Unclassifed Manufacturers – High Current Microstep Stepper Motor Driver with sensorless stall detection, protection / diagnosis and SPI Interface

English

English German Russian Spanish Italian Polish Chinese Japanese Korean French Portuguese	Language :

TMC246_06 Datasheet, PDF (7/26 Pages) List of Unclassifed Manufacturers – High Current Microstep Stepper Motor Driver with sensorless stall detection, protection / diagnosis and SPI Interface

◁

TMC246 / TMC246A DATA SHEET (V2.03 / Nov. 6th, 2006)

Application Circuit / Block Diagram

+VM

TMC246

OSC

1nF

OSC

VCC

100nF

Under-

voltage

Tem-

perature

[MDBN] SCK

[PHA] SDI

[ERR] SDO

[PHB] CSN

ENN

VCC/2

SPE

stand alone mode

ANN

[MDAN]

BL1 BL2

220nF

100ÂµF

RSH

VSA

DAC

REFSEL

AGND

GND

SLP

RSLP

REFSEL

VREF

OA1

OA2

Coil A

BRA

SRA

INA

INB

SRB

BRB

OB1

OB2

Coil B

VSB

[...]: function in stand alone mode

Pin Functions

VCC

AGND

INA

SCK

SDI

ENN

ANN

BL1, BL2

OA1, OA2

VSA, VSB

Function

Motor supply voltage

3.0-5.5V supply voltage for analog GND

and logic circuits

Analog ground (Reference for SRA, OSC

SRB, OSC, SLP, INA, INB, SLP)

Analog current control phase A

INB

Clock input of serial interface

SDO

Data input of serial interface

CSN

Device enable (low active), and SPE

overvoltage shutdown input

Enable analog current control via SLP

INA and INB (low active)

Digital blank time select

SRA, SRB

Output of full-bridge A

OB1, OB2

Supply voltage for bridge A/B

BRA, BRB

Function

Short to GND detection comparator â

connect to VS if not used

Digital / Power ground

Oscillator capacitor or external clock

input for chopper

Analog current control input phase B

Data output of serial interface (tri-

state)

Chip select input of serial interface

Enable SPI mode (high active). Tie to

GND for non-SPI applications

Slope control resistor.

Bridge A/B current sense resistor input

Output of full-bridge B

Bridge A/B sense resistor

▷