TB67S101ANG
Toshiba BiCD Integrated Circuit Silicon Monolithic
TB67S101ANG
PHASE
-in controlled Bipolar Stepping Motor Driver
TB67S101ANG is a two-phase bipolar stepping motor driver
using a PWM chopper. The interface is Phase control.
Fabricated with the BiCD process, the rating is 50 V/4.0 A
Features
・BiCD
process integrated monolithic IC.
・PWM
controlled constant-current drive.
・Allows
full, half, quarter step operation.
・Low
on-resistance (High + Low side = 0.49
Ω
(typ.)) MOSFET
output stage.
・High
efficiency motor current control mechanism (Advanced
Dynamic Mixed Decay)
・High
voltage and current (For specification, please refer to absolute
maximum ratings and operation ranges)
・Built-in
error detection circuits (Thermal shutdown (TSD),
over-current shutdown (ISD), and power-on reset (POR))
・Built-in
VCC regulator for internal circuit use.
・Chopping
frequency of a motor can be customized
by external resistor and capacitor.
・Package:
P-SDIP24-0723-1.78-001
Note: Please be careful about
thermal conditions during use.
P-SDIP24-0723-1.78-001
Weight 1.3g (Typ.)
©2015 TOSHIBA Corporation
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TB67S101ANG
1. Pin assignment (Top View)
GND
OUTB-
GND
OUTB+
RSB
GND
VM
VCC
VREFB
VREFA
OSCM
INA1
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
GND
OUTA-
GND
OUTA+
RSA
GND
STANDBY
INB2
INB1
PHASEB
PHASEA
INA2
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TB67S101ANG
2. Block diagram
INA1
INA2
INB1
INB2
PHASEA
PHASEB
STANDBY
Standby
Control
+
Phase/Step
Selector
+
Signal Decode
Logic
OSC-Clock
Converter
System
Oscillator
Power-on
Reset
Motor
Oscillator
VCC
Regulator
OSCM
VCC
VM
Current
Level
Set
Current
Reference
Setting
VREFA
VREFB
Current
Comp
Motor Control Logic
Current
Comp
Predriver
RSA
TSD
Predriver
RSB
ISD
H-bridge
H-bridge
GND
OUTA+
OUTA-
OUTB+
OUTB-
Functional blocks/circuits/constants in the block chart etc. may be omitted or simplified for explanatory purposes.
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TB67S101ANG
Notes
All the grounding wires of the TB67S101ANG 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, VCC(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, RS, 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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TB67S101ANG
3. Pin explanations
Pin No.1 – 24
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
Pin Name
GND
OUTB-
GND
OUTB+
RSB
GND
VM
VCC
VREFB
VREFA
OSCM
INA1
INA2
PHASEA
PHASEB
INB1
INB2
STANDBY
GND
RSA
OUTA+
GND
OUTA-
GND
Ground pin
Motor Bch (-) output pin
Ground pin
Motor Bch (+) output pin
Motor Bch current sense pin
Ground pin
Motor power supply pin
Internal VCC regulator monitor pin
Motor Bch output set pin
Motor Ach output set pin
Oscillating circuit frequency for chopping set pin
Motor
Ach excitation control input 1
Motor
Ach excitation control input 2
Current direction signal input for
motor
Ach
Current direction signal input for
motor
Bch
Motor
Bch excitation control input 1
Motor
Bch excitation control input 2
All-function-initializing and Low power dissipation mode
Ground pin
Motor Ach current sense pin
Motor Ach (+) output pin
Ground pin
Motor Ach (-) output pin
Ground pin
Function
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嵌入式系统
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