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PDF TMC249A Data sheet ( Hoja de datos )
| Número de pieza | TMC249A | |
| Descripción | High current microstep stepper motor driver | |
| Fabricantes | TRINAMIC | |
| Logotipo |  |
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TMC249 / TMC249A DATA SHEET (V2.10 / 2011-Aug-10)
1
TMC249/A – DATASHEET
High current microstep stepper motor driver
with stallGuard™, protection / diagnostics and
SPI Interface
TRINAMIC® Motion Control GmbH & Co KG
Hamburg, Germany
www.trinamic.com
Features
The TMC249 / TMC249A (1) is a dual full bridge driver IC for bipolar stepper motor control
applications. The TMC249 is realized in a HVCMOS technology and directly drives eight external Low-
RDS-ON high efficiency MOSFETs. It supports more than 6000mA coil current. The low power
dissipation makes the TMC249 an optimum choice for drives, where a high reliability is desired. With
additional drivers, motor current and voltage can be increased. The integrated unique sensorless stall
detection (pat. pend.) stallGuard™ makes it a good choice for applications, where a reference point is
needed, but where a switch is not desired. Its ability to predict an overload makes the TMC249 an
optimum choice for drives, where a high reliability is desired. Internal DACs allow microstepping as well
as smart current control. The device can be controlled by a serial interface (SPI™i) or by analog /
digital input signals. Short circuit, temperature, undervoltage and overvoltage protection are integrated.
More than 6000mA using 8 external MOS transistors (e.g. 4A RMS)
Sensorless stall detection stallGuard™ and load measurement integrated
Control via SPI with easy-to-use 12 bit protocol or external analog / digital signals
Short circuit, overvoltage and over temperature protection integrated
Status flags for overcurrent, open load, over temperature, temperature pre-warning, undervoltage
Integrated 4 bit DACs allow up to 16 times microstepping via SPI, any resolution via analog control
(for up to 64 microsteps via SPI see last manual page)
Mixed decay feature for smooth motor operation
Slope control user programmable to reduce electromagnetic emissions
Chopper frequency programmable via a single capacitor or external clock
Current control allows cool motor and driver operation
7V to 34V motor supply voltage (A-type)
up to 58V motor supply voltage using a few additional low cost components
3.3V or 5V operation for digital part
Low power dissipation via low RDS-ON power stage
Standby and shutdown mode available
Choice of SO28 or chip size MLF package
(1) The term TMC249 in this datasheet always refers to the TMC249A and the TMC249. The major
differences in the older TMC249 are explicitly marked with “non-A-type”. The TMC249A brings a
number of enhancements and is fully backward compatible to the TMC249.
Copyright © 2005, TRINAMIC Motion Control GmbH & Co KG
1 page  
TMC249 / TMC249A DATA SHEET (V2.10 / 2011-Aug-10)
5
Pinning
LA1
LA2
SRA
OSC
SDO
SDI
SCK
CSN
ENN
SPE
BL1
SRB
LB2
LB1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28 HA2
27 HA1
26 ANN
25 AGND
24 SLP
23 INA
22 INB
21 VCC
20 GND
19 VS
18 VT
17 BL2
16 HB1
15 HB2
AGND
ANN
HA1
HA2
-
LA1
LA2
SRA
32 31 30 29 28 27 26 25
TMC 249-LA
9 10 11 12 13 14 15 16
VT
BL2
HB1
HB2
-
LB1
LB2
SRB
Top view
Note: Cooling plane on -LA type should be connected to GND or left open.
Package codes
Type
Package
TMC249A SO28
TMC249 SO28
TMC249A QFN32, 7*7mm
until date code 1808
Temperature range
automotive (1)
automotive (1)
automotive (1)
Lead free
Code/marking
Yes TMC249A-SA
From date code 0505 TMC249-SA
(wwyy)
Yes TMC249A-LA /
249A-LA
(1) ICs are not tested according to automotive standards, but are usable within the complete
automotive temperature range.
Copyright © 2005, TRINAMIC Motion Control GmbH & Co KG
5 Page 
TMC249 / TMC249A DATA SHEET (V2.10 / 2011-Aug-10)
11
Control via the SPI Interface
The SPI data word sets the current and polarity for both coils. By applying consecutive values,
describing a sine and a cosine wave, the motor can be driven in microsteps. Every microstep is
initiated by its own telegram. Please refer to the description of the analog mode for details on the
waveforms required. The SPI interface timing is described in the timing section. We recommend the
TMC428 to automatically generate the required telegrams and motor ramps for up to three motors.
Serial data word transmitted to TMC249
(MSB transmitted first)
Bit Name Function
11 MDA mixed decay enable phase A
10 CA3 current bridge A.3
9 CA2 current bridge A.2
8 CA1 current bridge A.1
7 CA0 current bridge A.0
6 PHA polarity bridge A
5 MDB mixed decay enable phase B
4 CB3 current bridge B.3
3 CB2 current bridge B.2
2 CB1 current bridge B.1
1 CB0 current bridge B.0
0 PHB polarity bridge B
Remark
“1” = mixed decay
MSB
LSB
“0” = current flow from OA1 to OA2
“1” = mixed decay
MSB
LSB
“0” = current flow from OB1 to OB2
Serial data word transmitted from TMC249
(MSB transmitted first)
Bit Name Function
Remark
11 LD2 load indicator bit 2
MSB
10 LD1 load indicator bit 1
9 LD0 load indicator bit 0
81
always “1”
7 OT
overtemperature
6 OTPW temperature prewarning
5 UV
driver undervoltage
LSB
“1” = chip off due to overtemperature
“1” = prewarning temperature exceeded
“1” = undervoltage on VS
4 OCHS overcurrent high side
3 PWM cycles with overcurrent within 63 PWM cycles
3 OLB open load bridge B
no PWM switch off for 14 oscillator cycles
2 OLA open load bridge A
no PWM switch off for 14 oscillator cycles
1 OCB overcurrent bridge B low side 3 PWM cycles with overcurrent within 63 PWM cycles
0 OCA overcurrent bridge A low side 3 PWM cycles with overcurrent within 63 PWM cycles
Copyright © 2005, TRINAMIC Motion Control GmbH & Co KG
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet TMC249A.PDF ] | |
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