TB62214AFG
TOSHIBA BiCD Integrated Circuit
Silicon Monolithic
TB62214AFG
BiCD Constant-Current Two-Phase Bipolar Stepping Motor Driver IC
The TB62214AFG is a two-phase bipolar stepping motor driver
using a PWM chopper controlled by clock input.
Fabricated with the BiCD process, the TB62214AFG is rated at
40 V/2.0 A .
The on-chip voltage regulator allows control of a stepping motor
with a single VM power supply.
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)
Packages: HSOP28-P-0450-0.80
HSOP28-P-0450-0.80
Weight: 0.79 g (typ.)
Thermal shutdown (TSD), overcurrent shutdown (ISD), and power-on-resets (PORs)
Do not design your products or systems based on the information on this document.
Please contact your Toshiba sales representative for updated information before designing your
products.
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2012-5-10
TB62214AFG
Block Diagram
Bch
Pre-driver
VREF Comparator
Logic
TSD/ISD/VRS Detect
VREG
Ach
Pre-driver
Oscillator
Functional blocks/circuits/constants in the block chart etc. may be omitted or simplified for explanatory purposes.
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TB62214AFG
Pin Assignment
TB62214AFG
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)
TB62214AFG
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
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2012-5-10
TB62214AFG
Pin Function
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
Pin Name
CW/CCW
MO_OUT
D_MODE_1
D_MODE_2
CLK
ENABLE
RESET
RS_A
NC
OUT_A
NC
GND
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
Function
OUT_A
GND
GND
OUT_B
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
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
GND
NC
OUT_B
NC
RS_B
VM
VCC
NC
NC
VREF_B
VREF_A
OSCM
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2012-5-10
TB62214AFG
CLK Function
CLK Input
Rise
Fall
Function
The electrical angle leads by one on the rising edge.
Remains at the same position.
ENABLE Function
ENABLE Input
H
L
Function
Output transistors are enabled (normal operation mode).
Output transistors are disabled (high impedance state).
CW/CCW Function
CW/CCW Input
H
L
Forward (CW)
Reverse (CCW)
Function
Excitation Mode Select Function
D_MODE_1
L
L
H
H
D_MODE_2
L
H
L
H
Function
OSC_M, output transistors are disabled (in Standby mode)
Two-phase excitation
1-2-phase excitation
W1-2-phase excitation
RESET Function
RESET Input
L
H
Normal operation mode
The electrical angle is reset.
Function
Excitation Mode
2 Phase
1 – 2 Phase
W1-2 Phase
A-phase Current
100%
100%
71%
B-phase Current
100%
100%
71%
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2012-5-10
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