TB67S215FTAG
Block Diagram
CW/CCW
MO_OUT
VMR Detect
D_MODE1
D_MODE2
VCC
VCC Voltage
Regulator
Step Decoder
(Input Logic)
CLK_IN
ENABLE
Chopper OSC
OSC
OSCM
RESET
Current Level Set
2bit D/A
(Angle Control)
VREF
VM
Torque Control
CR-CLK
Converter
Current Control
Current Feedback
Output Control
(Mixed Decay Control)
RS COMP
RS_A
RS_B
ISD/VRS
TSD
Output
(H-Bridge ×2)
VMR
Detect
VM
Detection Circuit
Stepping Motor
* Please note that in the block diagram, functional blocks or constants may be omitted or simplified for explanatory purposes.
* Please make sure that all GND pins are shorted to the board’s ground pattern with a single point. Also, make sure to take extra
care with pattern layout, due to heat generation.
Please take extra care while tracing the layout of the VM, GND and output patterns to avoid shortage across output, GND
or power supplies. If such shortage occurs, the TB67S215 may be permanently damaged.
The utmost care should also be taken for pattern designing and implementation of the TB67S215. If power-relevant pins such as
VM, RS, OUT, and GND (which is capable of running particularly large current) are wired incorrectly, an operation error may occur
or the TB67S215 may be destroyed. The logic input pins must also be wired correctly. Otherwise, the TB67S215 may be damaged
by a current larger than the specified current running through the IC.
2013-08-19
Ver.1.02
3