TB67S142FTG
Toshiba BiCD Process Integrated Circuit Silicon Monolithic
TB67S142FTG
Clock controlled Unipolar stepping motor driver
The TB67S142FTG is a Clock controlled PWM chopping type 2 phase
unipolar stepping motor driver. Using the BiCD process, the TB67
S142FTG can be operated with VM voltage of 45V, output voltage
of 84V, and output current of 3.0A at max (absolute maximum ratings).
FTG
Features
・BiCD
processed monolithic integrated circuit.
・Capable
of operating one unipolar stepping motor.
・PWM
controlled constant current drive.
・Full,
half(a), quarter step resolution.
・Low
on resistance(0.25Ω(typ.) output MOSFET.
P-WQFN48-0707-0.50-003
Weight 0.1(g)（typ.）
・High
voltage and current (For specification, please refer to the absolute maximum ratings and operation ranges).
・Brake
mode function
・Standby
(low power) mode function
・Error
detect feedback signal output function (Over current/Thermal shutdown).
・Error
detect function (Thermal shutdown(TSD), Over current(ISD), and Low voltage(POR).
・Built-in
VCC regulator for internal circuit use.
・Fixed
off time can be adjusted by external components.
Note) Please be careful about the thermal conditions during use.
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TB67S142FTG
Pin assign (TB67S142FTG)
(Top View)
VCOM
VREF
GND
VCC
VCC
VM
NC
NC
NC
VCOM
NC
36 35 34 33 32 31 30 29 28 27 26 25
OSCM
ERR
ALM
MO
NC
NC
NC
NC
NC
DMODE1
DMODE2
RESET
37
38
39
40
41
42
43
44
45
46
47
48
1
NC
2
NC
3
CLK
4
NC
5
ENABLE
6
CW/CCW
7
BRAKE
8
GND
9 10 11 12
NC
NC
NC
TB67S142FTG
24 OUTB+
23 OUTB+
22 RSGNDB
21 RSGNDB
20 OUTB-
19 OUTB-
18 OUTA-
17 OUTA-
16 RSGNDA
15 RSGNDA
14 OUTA+
13 OUTA+
Please mount the four corner pins of the QFN package and the exposed pad to the GND area of the PCB.
NC
2
NC
2014-04-14
TB67S142FTG
TB67S142 block diagram
RESET
ENABLE
CW/CCW
Polarity and Angle control
Ach
Pre
drv
Ach
OUT
Nch×2
OUT A+
OUT A-
RSGNDA
MO
RS Comp
VREF
VREF
STANDBY
Control
External brake
BRAKE
OSCM
VM
VCC
Internal OSC
Error detect
POR
VCC regulator
(TSD/ISD)
Pre TSD
ERR
ALM
CLK
RS Comp
VCOM
Bch
DMODE1
DMODE2
Step Resolution Control
Pre
drv
Bch
OUT
Nch×2
OUT B+
OUT B-
RSGNDB
Functional blocks/circuits/constants in the block chart etc. may be omitted or simplified for explanatory purposes.
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TB67S142FTG
Application Notes
All the grounding wires of the device must run on the solder mask on the PCB and be externally terminated at
only one point. Also, a grounding method should be considered for efficient heat dissipation.
Careful attention should be paid to the layout of the output, VDD(VM) and GND traces, to avoid short circuits
across output pins or to the power supply or ground. If such a short circuit occurs, the device may be permanently
damaged.
Also, the utmost care should be taken for pattern designing and implementation of the device since it has power
supply pins (VM, RSGND, OUT, GND) through which a particularly large current may run. If these pins are
wired incorrectly, an operation error may occur or the device may be destroyed.
The logic input pins must also be wired correctly. Otherwise, the device may be damaged owing to a current
running through the IC that is larger than the specified current.
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TB67S142FTG
Pin explanations
TB67S142FTG (WQFN48)
Pin No.1 to 28
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
Pin Name
NC
NC
CLK
NC
ENABLE
CW/CCW
BRAKE
GND
NC
NC
NC
NC
OUTA+
OUTA+
RSGNDA
RSGNDA
OUTA-
OUTA-
OUTB-
OUTB-
RSGNDB
RSGNDB
OUTB+
OUTB+
NC
VCOM
VCOM
NC
Non connection
Non connection
External Clock input pin
Non connection
Motor output ON/OFF pin
Clock-wise/Counter Clock-wise setting pin
Brake input pin
Ground pin
Non connection
Non connection
Non connection
Non connection
Motor output
Motor output
A+ pin
A+ pin
Function
Ach current sense ground pin
Ach current sense ground pin
Motor output
Motor output
Motor output
Motor output
A-pin
A-pin
B-pin
B-pin
Bch current sense ground pin
Bch current sense ground pin
Motor output
Motor output
B+ pin
B+ pin
Non connection
Common pin
Common pin
Non connection
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2014-04-14
51单片机
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