TB67S508FTG
TOSHIBA BiCD Integrated Circuit Silicon Monolithic
TB67S508FTG
BiCD Constant-Current Two-Phase Bipolar Stepping Motor Driver IC
The TB67S508FTG is a two-phase bipolar stepping motor
driver using a PWM chopper.
Fabricated with the BiCD process, the TB67S508FTG rating is
40 V/3.0 A.
Motor can be operated with single power supply (VM) by
built-in regulator.
Features
•
BiCD process monolithic IC
•
Capable of controlling bipolar stepping motor
•
PWM controlled constant-current drive without resistance for motor current detection
•
Built-in ACDS (Advanced Current Detect System) function enables a PWM constant current
control without external current detection resistors.
•
Built-in ADMD(Advanced Dynamic Mixed Decay) function enables a high efficiency PWM
constant current control.
•
I/F: Capable of switching between the phase input control and the clock input control
•
Full-step/Half-step/Quarter-step resolutions
•
BiCD: DMOSFET is adopted to output power transistor.
•
High withstand voltage and large current: 40 V / 3.0 A (absolute maximum ratings)
•
Built-in thermal shutdown detection (TSD), Over current detection (ISD), and Under voltage
lockout detection(UVLO)
•
Decreasing number of external components by reducing charge pump
•
Package:
P-VQFN36-0505-0.50-002
P-VQFN36-0505-0.50-002
Weight: 0.06 g (Typ.)
©2017 TOSHIBA Corporation
1
2017-03-01
TB67S508FTG
Pin Assignment
IFSEL=”H” (Phase input control)
(Top View)
OUT_B+
OUT_B+
18 MGND
17 MGND
16 OUT_B-
15 OUT_B-
TB67S508FTG
14 NC
13 OUT_A-
12 OUT_A-
11
MGND
10 MGND
1
/STANDBY
2
PHASE_A
3
PHASE_B
4
GND
5
NC
6
VM
7
VM
8
OUT_A+
OUT_B+
9
OUT_A+
OUT_B+
18 MGND
17 MGND
16 OUT_B-
15 OUT_B-
TB67S508FTG
14 NC
13 OUT_A-
12 OUT_A-
11
MGND
10 MGND
1
CLK
2
ENABLE
3
RESET
4
GND
5
NC
6
VM
7
VM
8
OUT_A+
9
OUT_A+
TEST1
TEST2
CC
NC
NC
VM
VM
27 26 25 24 23 22 21 20 19
OSCM
VREF_A
VREF_B
GND
IFSEL
28
29
30
31
32
IN_A1
33
IN_A2
34
IN_B1
35
IN_B2
36
IFSEL=”L” (Clock input control)
(Top View)
TEST1
TEST2
CC
27 26 25 24 23 22 21 20 19
OSCM
VREF_A
VREF_B
GND
IFSEL
28
29
30
31
32
CW/CCW
33
MO
34
DMODE1
35
DMODE2
36
2
VM
NC
VM
NC
2017-03-01
TB67S508FTG
Block Diagram
IFSEL=”H” (Phase input control)
PHASE_A
PHASE_B
/STANDBY
IN_B1
IN_B2
IN_A1
IN_A2
IFSEL
Main
Logic
VMR
Detect
VCC Voltage
Regulator
System
Oscillator
Motor
Oscillator
TSD
Detect
ISD
Detect
VM
CC
OSCM
Pre Driver
Current Comp
Current
Level
Convert
Current
Reference
Setting
VREF_A
VREF_B
Output
(H-Bridge
×2)
MGND
OUT_A+, OUT_A-, OUT_B+, and OUT_B-
GND
Stepping Motor
Functional blocks/circuits/constants in the block chart etc. may be omitted or simplified for explanatory purposes.
Note: All the grounding wires of the TB67S508FTG 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, 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, OUT_A+, OUT_A-, OUT_B+, OUT_B-, GND, and MGND) 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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2017-03-01
TB67S508FTG
Pin Explanations
IFSEL=”H” (Phase input control)
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
29
30
31
32
33
34
35
36
Pin Name
/STANDBY
PHASE_A
PHASE_B
GND
NC
VM
VM
OUT_A+
OUT_A+
MGND
MGND
OUT_A-
OUT_A-
NC
OUT_B-
OUT_B-
MGND
MGND
OUT_B+
OUT_B+
VM
VM
NC
TEST2
CC
NC
TEST1
OSCM
VREF_A
VREF_B
GND
IFSEL
IN_A1
IN_A2
IN_B1
IN_B2
Standby signal input pin
Control signal input pin for Ach motor output
Control signal input pin for Bch motor output
Ground pin
Non-connection pin
Motor power supply pin
Motor power supply pin
Motor Ach (+) output pin
Motor Ach (+) output pin
Motor ground pin
Motor ground pin
Motor Ach (-) output pin
Motor Ach (-) output pin
Non-connection pin
Motor Bch (-) output pin
Motor Bch (-) output pin
Motor ground pin
Motor ground pin
Motor Bch (+) output pin
Motor Bch (+) output pin
Motor power supply pin
Motor power supply pin
Non-connection pin
Toshiba test pin for shipment (please set open in using.)
Monitor pin for internal regulator
Non-connection pin
Toshiba test pin for shipment (please set GND in using.)
Frequency set pin for internal oscillation circuit
Current set pin for Ach motor output
Current set pin for Bch motor output
Ground pin
I/F mode set pin
Control signal input pin for Ach motor output
Control signal input pin for Ach motor output
Control signal input pin for Bch motor output
Control signal input pin for Bch motor output
Function
* NC: Please set open.
* Please connect the pins with the same pin name nearby.
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2017-03-01
TB67S508FTG
IFSEL=”L” (Clock input control)
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
29
30
31
32
33
34
35
36
Pin Name
CLK
ENABLE
RESET
GND
NC
VM
VM
OUT_A+
OUT_A+
MGND
MGND
OUT_A-
OUT_A-
NC
OUT_B-
OUT_B-
MGND
MGND
OUT_B+
OUT_B+
VM
VM
NC
TEST2
CC
NC
TEST1
OSCM
VREF_A
VREF_B
GND
IFSEL
CW/CCW
MO
DMODE1
DMODE2
Function
Clock signal input pin for electrical-angle step
Signal input pin for switching output (ON/OFF)
Signal input pin for initialization of electrical angle
Ground pin
Non-connection pin
Motor power supply pin
Motor power supply pin
Motor Ach (+) output pin
Motor Ach (+) output pin
Motor ground pin
Motor ground pin
Motor Ach (-) output pin
Motor Ach (-) output pin
Non-connection pin
Motor Bch (-) output pin
Motor Bch (-) output pin
Motor ground pin
Motor ground pin
Motor Bch (+) output pin
Motor Bch (+) output pin
Motor power supply pin
Motor power supply pin
Non-connection pin
Toshiba test pin for shipment (please set open in using.)
Monitor pin for internal regulator
Non-connection pin
Toshiba test pin for shipment (please set GND in using.)
Frequency set pin for internal oscillation circuit
Current set pin for Ach motor output
Current set pin for Bch motor output
Ground pin
I/F mode set pin
Signal input pin for rotation direction set
Electrical angle monitor pin (Open-drain output)
Excitation mode set pin
Excitation mode set pin
* NC: Please set open.
* Please connect the pins with the same pin name nearby.
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2017-03-01
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