tb62214ftg TOSHIBA Semiconductor CORPORATION, tb62214ftg Datasheet - Page 4

• Manufacturer Part Number: tb62214ftg
• Description: Bicd Constant-current Two-phase Bipolar Stepping Motor Driver Ic
• Manufacturer: TOSHIBA Semiconductor CORPORATION

Block Diagram
Note: All the grounding wires of the TB62214FG/FTG must run on the solder mask on the PCB and be externally
across output pins or to the power supply or ground. If such a short-circuit occurs, the TB62214FG/FTG may be
permanently damaged.
the power supply pins (V
run through. If these pins are wired incorrectly, an operation error or even worse a destruction of the
TB62214FG/FTG may occur.
current larger than the specified current running through the IC.
Careful attention should be paid to the layout of the output, V
Also, utmost care should be taken for pattern designing and implementation of the TB62214FG/FTG since it has
The logic input pins must be correctly wired, too; otherwise, the TB62214FG/FTG may be damaged due to a
Please note the above when designing and implementing IC patterns.
purposes.
In the block diagram, part of the functional blocks or constants may be omitted or simplified for explanatory
D_MODE_1
D_MODE_2
terminated at only one point. Also, a grounding method should be considered for efficient heat dissipation.
CW/CCW
ENABLE
ENABLE
RESET
Vref
VM
R
CLK
S
M
, R
Current Feedback (×2)
S_
A, RS_B, OUT_A,
ENABLE
V
RS
Current Level Set
Step Decoder
(Input Logic)
(H-Bridge×2)
OUT_A
Stepping
Output
Motor
R
4
, OUT_B,
S
COMP
DD
(V
OUT_B
M
VM
) and GND traces, to avoid short-circuits
, GND) particularly a large current can
(Mixed Decay Control)
Detect
VMR
ISD
Output Control
Detection Circuit
Detect
VMR
Chopper OSC
Vcc Voltage
Regulator
Converter
CR-CLK
TB62214FG/FTG
OSC
VM
TSD
2010-06-10
Vcc
OSCM
MO_OUT