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PDF TMC603 Data sheet ( Hoja de datos )
| Número de pieza | TMC603 | |
| Descripción | Three phase motor driver | |
| Fabricantes | TRINAMIC | |
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TMC603 DATA SHEET (V. 1.06 / 26. Mar. 2009)
1
TMC603 – DATASHEET
Three phase motor driver with BLDC back EMF
commutation hallFX™ and current sensing
TRINAMIC® Motion Control GmbH & Co. KG
Sternstraße 67
D – 20357 Hamburg
GERMANY
www.trinamic.com
1 Features
The TMC603 is a three phase motor driver for highly compact and energy efficient drive solutions. It
contains all power and analog circuitry required for a high performance BLDC motor system. The
TMC603 is designed to provide the frontend for a microcontroller doing motor commutation and control
algorithms. It directly drives 6 external N-channel MOSFETs for motor currents up to 30A and up to
50V and integrates shunt less current measurement, by using the MOSFETs channel resistance for
sensing. Integrated hallFX (pat. fil.) allows for sensorless commutation. Protection and diagnostic
features as well as a step down switching regulator further reduce system cost and increase reliability.
Highlights
Up to 30A motor current
9V to 50V operating voltage
3.3V or 5V interface
8mm x 8mm QFN package
Integrated shunt less current measurement using power MOS transistor RDSon
hallFX™ sensorless back EMF commutation emulates hall sensors
Integrated break-before-make logic: No special microcontroller PWM hardware required
EMV optimized current controlled gate drivers – up to 150mA possible
Overcurrent / short to GND and undervoltage protection and diagnostics integrated
Internal QGD protection: Supports latest generation of power MOSFETs
Integrated supply concept: Step down switching regulator up to 500mA / 300kHz
Common rail charge pump allows for 100% PWM duty cycle
Applications
Motor driver for industrial applications
Integrated miniaturized drives
Robotics
High-reliability drives (dual position sensor possible)
Pump and blower applications with sensorless commutation
Motor type
3 phase BLDC, stepper, DC motor
Sine or block commutation
Rotor position feedback: Sensorless, encoder or hall sensor, or any mix
Copyright © 2008 TRINAMIC Motion Control GmbH & Co. KG
1 page  
TMC603 DATA SHEET (V. 1.06 / 26. Mar. 2009)
5
3 System architecture using the TMC603
BUS / IO
TMC603
POWER
slope
control
slope HS
slope LS
12V step
down
regulator
5V
linear
regulator
1 of 3 shown
DRIVER
SECTION
HS-drive
micro
controller
break
before
make
logic
gate off detection
bridge current
measurement
LS-drive
short to
GND
detection
HallFXTM for
sensorless
commutation
short to GND 1,2,3
error logic
+VM
HS
N
S
BLDC motor
LS
position sensor
NFET power MOS half bridges
figure 1: application block diagram
The TMC603 is a BLDC driver IC using external power MOS transistors. Its unique feature set allows
equipping inexpensive and small drive systems with a maximum of intelligence, protection and
diagnostic features. Control algorithms previously only found in much more complex servo drives can
now be realized with a minimum of external components. Depending on the desired commutation
scheme and the bus interface requirements, the TMC603 forms a complete motor driver system in
combination with an external 8 bit processor or with a more powerful 32 bit processor. A simple
system can work with three standard PWM outputs even for sine commutation! The complete analog
amplification and filtering frontend as well as the power driver controller are realized in the TMC603.
Its integrated support for sine commutation as well as for back EMF sensing saves cost and allows for
maximum drive efficiency.
The external microcontroller realizes commutation and control algorithms. Based on the position
information from an encoder or hall sensors, the microcontroller can do block commutation or sine
commutation with or without space vector modulation and realizes control algorithms like a PID
regulator for velocity or position or field oriented control based on the current signals from the
TMC603. For sensorless commutation, the microcontroller needs to do a forward controlled motor start
without feedback. This can be realized either using block commutation or sine commutation. A sine
commutated start-up minimizes motor vibrations during start up. As soon as the minimum velocity for
hallFX is reached, it can switch to block commutation and drive the motor based on the hallFX signals.
The TMC603 also supports control of three phase stepper motors as well as two phase stepper
motors using two devices.
Copyright © 2008 TRINAMIC Motion Control GmbH & Co. KG
5 Page 
TMC603 DATA SHEET (V. 1.06 / 26. Mar. 2009)
11
A zener diode at the gate (range 12V to 15V) protects the high-side MOSFET in case of a short to
GND event: Should the bridge be shorted, the gate driver output is forced to stay at a maximum of the
zener voltage above the source of the transistor. Further it prevents the gate voltage from dropping
below source level.
The maximum permissible MOSFET driver current depends on the motor supply voltage:
Parameter
MOSFET driver current with VVM < 30V
MOSFET driver current with 30V < VVM < 50V
MOSFET driver current with VVM = 50V
Symbol
IHSX, ILSX
IHSX, ILSX
Max
150
150-2.5*(VVM-30V)
100
Unit
mA
mA
mA
Pin
LSx
HSx
BMx
RSLP
VLS
VCP
GNDP
BHx
BLx
INV_BL
Comments
Low side MOSFET driver output. The driver current is set by resistor RSLP
High side MOSFET driver output. The driver current is set by resistor RSLP
Bridge center used for current sensing and for control of the high side driver.
For unused bridges, connect BMx pin to GND and leave the driver outputs
unconnected. Place the external protection resistor near the IC pin.
The resistor connected to this pin controls the MOSFET gate driver current. A 40µA
current out of this pin (resistor value of 100k to GND) results in the nominal
maximum current at full supply range. Keep interconnection between IC and resistor
short, to avoid stray capacitance to adjacent signal traces of modulating the set
current.
Resistor range: 60 k to 500 k
Low side driver supply voltage for driving low side gates
Charge pump supply voltage. Provides high side driver supply
Power GND for MOSFET drivers, connect directly to GND
High side driver control signal: A positive level switches on the high side.
For unused bridges, tie to GND.
Low side driver control signal: Polarity can be reversed via INV_BL
Allows inversion of BLx input active level (low: BLx is active high).
When high, each BLx and BHx can be connected in parallel in order to use only 3
PWM outputs for bridge control. Be sure to switch on internal break-before-make logic
(BBM_EN = Vcc) to avoid bridge short circuits in this case.
5.2.2 Break-before-make logic
Each half-bridge has to be protected against cross conduction during switching events. When
switching off the low-side MOSFET, its gate first needs to be discharged, before the high side
MOSFET is allowed to be switched on. The same goes when switching off the high-side MOSFET and
switching on the low-side MOSFET. The time for charging and discharging of the MOSFET gates
depends on the MOSFET gate charge and the driver current set by RSLP. When the BBM logic is
enabled, the TMC603 measures the gate voltage and automatically delays switching on of the
opposite bridge transistor, until its counterpart is discharged. The BBM logic also prevents
unintentional bridge short circuits, in case both, LSx and HSx, become switched on. The first active
signal has priority.
Alternatively, the required time can be calculated and pre-compensated in the PWM block of the
microcontroller driving the TMC603 (external BBM control).
Copyright © 2008 TRINAMIC Motion Control GmbH & Co. KG
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet TMC603.PDF ] | |
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