TB62214FG/FTG
TOSHIBA BiCD Integrated Circuit
Silicon Monolithic
TB62214FG, TB62214FTG
BiCD Constant-Current Two-Phase Bipolar Stepping Motor Driver IC
The TB62214FG/FTG is a two-phase bipolar stepping motor
driver using a PWM chopper controlled by clock input.
Fabricated with the BiCD process, the TB62214FG/FTG is
rated at 40 V/2.0 A .
The on-chip voltage regulator allows control of a stepping motor
with a single V
M
power supply.
TB62214FG
Features
•
Bipolar stepping motor driver
•
PWM constant-current drive
•
Clock input control
•
Allows two-phase, 1-2-phase and W1-2-phase excitations.
•
BiCD process: Uses DMOS FETs as output power transistors.
•
High voltage and current: 40 V/2.0 A (absolute maximum
•
•
ratings）
Thermal shutdown (TSD), overcurrent shutdown (ISD), and
power-on-resets (PORs)
Packages: HSOP28-P-0450-0.80
QFN48-P-0707-0.50
HSOP28-P-0450-0.80
TB62214FTG
The TB62214FG/FTG is RoHS compliant.
QFN48-P-0707-0.50
Weight
HSOP28-P-0450-0.80 : 0.79 g (typ.)
QFN48-P-0707-0.50 : 0.14 g (typ.)
1
2010-06-10
TB62214FG/FTG
Pin Assignment
TB62214FG
(HSOP28)
CW/CCW
MO_OUT
D_MODE_1
D_MODE_2
CLK
ENABLE
RESET
1
2
3
4
5
6
7
28
27
26
25
24
23
22
OSCM
Vref_A
Vref_B
NC
NC
Vcc
VM
FIN(GND)
FIN(GND)
Rs_A
NC
OUT_A
NC
GND
OUT_A
GND
8
9
10
11
12
13
14
21
20
19
18
17
16
15
Rs_B
NC
OUT_B
NC
GND
OUT_B
GND
2
2010-06-10
TB62214FG/FTG
Pin Assignment
TB62214FTG
(
QFN48
)
OUT_B1
OUT_B2
R
S_B1
V
CC
R
S_B2
NC
NC
NC
NC
NC
*
NC 37
NC 38
NC 39
GND 40
V
ref_B
41
V
ref_A
42
OSCM 43
CW/CCW 44
MO_OUT 45
D_MODE_1 46
D_MODE_2 47
NC 48
NC
V
M
36
35
34
33
32
31
30
29
28
27
26
25
*
24 NC
23 NC
22 GND
21
OUT_B1
20 OUT_B2
19 GND
18 GND
17 OUT_A2
16 OUT_A1
15 GND
14 NC
13 NC
1
NC
2
CLK
3
ENABLE
4
RESET
5
GND
6
NC
7
R
S_A1
8
R
S_A2
9
NC
10
OUT_A1
11
OUT_A2
12
NC
*
*
*Mark PAD: It must be connected to GND
3
2010-06-10
TB62214FG/FTG
Block Diagram
In the block diagram, part of the functional blocks or constants may be omitted or simplified for explanatory
purposes.
RESET
CW/CCW
ENABLE
D_MODE_1
D_MODE_2
ENABLE
CLK
Step Decoder
(Input Logic)
VM
VMR
Detect
Vcc Voltage
Regulator
MO_OUT
Vcc
Chopper OSC
OSCM
OSC
Vref
Current Level Set
CR-CLK
Converter
Current Feedback (×2)
VM
V
RS
R
S
COMP
Output Control
(Mixed Decay Control)
R
S
ISD
ENABLE
TSD
Output
(H-Bridge×2)
VM
VMR
Detect
Detection Circuit
Stepping
Motor
Note: All the grounding wires of the TB62214FG/FTG 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, V
DD
(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 TB62214FG/FTG may be
permanently damaged.
Also, utmost care should be taken for pattern designing and implementation of the TB62214FG/FTG since it has
the power supply pins (V
M
, R
S_
A, RS_B, OUT_A,
OUT_A
, OUT_B,
OUT_B
, GND) particularly a large current can
run through. If these pins are wired incorrectly, an operation error or even worse a destruction of the
TB62214FG/FTG may occur.
The logic input pins must be correctly wired, too; otherwise, the TB62214FG/FTG may be damaged due to a
current larger than the specified current running through the IC.
Please note the above when designing and implementing IC patterns.
4
2010-06-10
TB62214FG/FTG
Pin Function
TB62214FG
(HSOP28)
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
CW/CCW
MO_OUT
D_MODE_1
D_MODE_2
CLK
ENABLE
RESET
R
S_A
NC
OUT_A
NC
GND
OUT_A
GND
GND
OUT_B
Function
Motor rotation: forward/reverse
Electric angle monitor
Excitation mode control
Excitation mode control
An electrical angle leads on the rising edge of the clock input. A motor rotation
count depends on the input frequency.
A-/B-channel output enable
Electric angle reset
The sink current sensing of A-phase motor coil
No-connect
A-phase positive driver output
No-connect
Motor power ground
A-phase negative driver output
Motor power ground
Motor power ground
B-phase negative driver output
Motor power ground
No-connect
B-phase positive driver output
No-connect
The sink current sensing of B-phase motor coil
Power supply
Smoothing filter for logic power supply
No-connect
No-connect
Tunes the current level for B-phase motor drive.
Tunes the current level for A-phase motor drive.
Oscillator pin for PWM chopper
GND
NC
OUT_B
NC
R
S_B
V
M
V
CC
NC
NC
V
ref_B
V
ref_A
OSCM
Pin Interfaces
(HSOP28)
8 21
150Ω
1
3
5
4
6
7
100kΩ
FIN
22
8kΩ
3kΩ
3kΩ
10
19
13
16
12
17
150Ω
2
100kΩ
26
27
1kΩ
23
28
500Ω
1kΩ
14
15
FIN
FIN
FIN
The equivalent circuit diagrams may be simplified or some parts of them may be omitted for
explanatory purposes. Absolute precision of the chip internal resistance is +/-30%.
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2010-06-10
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