TB67S522FTAG
Toshiba BiCD Process Integrated Circuit Silicon Monolithic
TB67S522FTAG
PWM method CLK-IN bipolar stepping motor driver
The TB67S522FTAG is a PWM chopper type two-phase
bipolar stepping motor driver.
By applying the BiCD process, the TB67S522FTAG is rated at
40 V/2.8 A .
The internal voltage regulator allows control of the motor with
a single VM power supply.
P-WQFN36-0606-0.50-002
Weght: 0.14 g (typ.)
Features
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Bipolar stepping motor driver
PWM constant current drive
Operational in full, half, and quarter step resolutions
Low on-resistance of output stage transistor by using BiCD process
High withstand voltage and large current (For details, refer to absolute maximum ratings and operating
ranges.)
Built-in thermal shutdown circuit (TSD), over-current detection circuit (ISD), and POR for VM power
supply
Built-in VCC regulator allows the TB67S522FTAG to function with only VM power supply.
Able to customize PWM signal frequency by external resistance/capacitor.
Package: P-WQFN36-0606-0.50-002
Note: Please be careful about thermal conditions during use.
©2016 TOSHIBA Corporation
1
2016-12-13
TB67S522FTAG
Pin Assignment
(Top View)
27 26 25 24 23 22 21 20 19
NC 28
GND 29
VREF_B 30
VREF_A 31
OSCM 32
CW/CCW 33
MO_OUT 34
D_MODE1 35
D_MODE2 36
CLK_IN
GND
NC
RS_A1
RS_A2
1 2 3
ENABLE
RESET
4 5 6 7 8 9
OUT_A1+
OUT_A2+
18
17
16
15
14
13
12
11
10
GND
OUT_B1-
OUT_B2-
GND
NC
GND
OUT_A2-
OUT_A1-
GND
TB67S522FTAG
*: Please mount the four corner pads of the package and the exposed pad to the GND area of the PCB.
2
OUT_B1+
OUT_B2+
VM
RS_B1
RS_B2
NC
NC
VCC
NC
2016-12-13
TB67S522FTAG
Block Diagram
CW/CCW
V
MR
Detect
MO_OUT
VCC Voltage
Regulator
Chopper OSC
D_MODE1
D_MODE2
CLK_IN
ENABLE
RESET
Step Decoder
(Input Logic)
VCC
OSCM
OSC
Current Level Set
VREF
Torque Control
2bit D/A
(Angle Control)
CR-CLK
Converter
Current Control
VM
Current Feedback
R
S
COMP
RS_A1
RS_A2
RS_B1
RS_B2
Output
(H-Bridge
×2)
V
M
Output Control
(Mixed Decay Control)
ISD/VRS
V
MR
Detect
TSD
Detection Circuit
Stepping Motor
Some of the functional blocks, circuits, or constants in the block diagram may be omitted or simplified for
explanatory purposes.
Note: All the grounding wires of the TB67S522FTAG should 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, V
M
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, RS_A1, RS_A2, RS_B1, RS_B2,
OUT_A1+, OUT_A2+, OUT_A1-, OUT_A2-, OUT_B1+, OUT_B2+, OUT_B1-, OUT_B2-, and 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. Careful attention should be paid to design patterns and mountings.
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2016-12-13
TB67S522FTAG
Pin Function Description
Pin number
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
29
30
31
32
33
34
35
36
Pin name
CLK_IN
ENABLE
RESET
GND
NC
RS_A1 (Note)
RS_A2 (Note)
OUT_A1+ (Note)
OUT_A2+ (Note)
GND
OUT_A1- (Note)
OUT_A2- (Note)
GND
NC
GND
OUT_B2- (Note)
OUT_B1- (Note)
GND
OUT_B2+ (Note)
OUT_B1+ (Note)
RS_B2 (Note)
RS_B1 (Note)
VM
NC
VCC
NC
NC
NC
GND
VREF_B
VREF_A
OSCM
CW/CCW
MO_OUT
D_MODE1
D_MODE2
Function
Clock signal input pin for determining the number of motor rotations
The electrical angle progresses at rising.
Output enable pin of A ch and B ch
Electrical angle reset pin
GND
Non-connection
Sense resistance connection pin for setting current value of A ch output
Sense resistance connection pin for setting current value of A ch output
A ch (+) output
A ch (+) output
GND
A ch (-) output
A ch (-) output
GND
Non-connection
GND
B ch (-) output
B ch (-) output
GND
B ch (+) output
B ch (+) output
Sense resistance connection pin for setting current value of B ch output
Sense resistance connection pin for setting current value of B ch output
Monitor pin of motor power supply
No connection
Monitor pin for internal generated VCC regulator
Non-connection
Non-connection
Non-connection
GND
Bias pin for current value setting for B ch output
Bias pin for current value setting for A ch output
Oscillation circuit frequency setting pin for chopping
Clockwise / counter clockwise of motor operation
Monitor pin of electrical angle
Step resolution setting pin 1
Step resolution setting pin 2
The NC pin should be used open.
Note: Connect the same function pins (numbered 1, 2) indicated as (Note) after the pin name at near their respective
pins.
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2016-12-13
TB67S522FTAG
Input/Output Equivalent Circuit
6, 7
21, 22
1, 2, 3,
1 kΩ
100 kΩ
33, 35, 36
8, 9
19, 20
11, 12
16, 17
GND
GND
25
1kΩ
30, 31
32
1 kΩ
500
Ω
34
GND
GND
GND
The equivalent circuit diagrams may be simplified or some parts of them may be omitted for explanatory purposes.
Pin No
1
2
3
6,7
8,9
11,12
16,17
19,20
21,22
23
25
30
31
32
33
34
35
36
Pin name
CLK_IN
ENABLE
RESET
RS_A1, RS_A2
OUT_A1+, OUT_A2+
OUT_A1-, OUT_A2-
OUT_B2-, OUT_B1-
OUT_B2+, OUT_B1+
RS_B2, RS_B1
VM
VCC
VREF_B
VREF_A
OSCM
CW/CCW
MO_OUT
D_MODE1
D_MODE2
5
2016-12-13
微控制器 MCU
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