tb62209f TOSHIBA Semiconductor CORPORATION, tb62209f Datasheet - Page 12

• Manufacturer Part Number: tb62209f
• Description: Stepping Motor Driver Ic Using Pwm Chopper Type
• Manufacturer: TOSHIBA Semiconductor CORPORATION

1. Function of CW/CCW
2. Function of MDT 1/MDT 2
3. Function of TORQUE X
4. Function of RESET (forced initialization of electrical angle)
TORQUE 2
ripple) becomes larger. (Typical value is 37.5%.)
for example, at startup and fixed-speed rotation.
angle is at that time is not known. Thus, this method is used to forcibly initialize the electrical angle.
(electrical angle = 0°).
MDT 2
Input
Input
CW/CCW switches the direction of stepping motor rotation.
MDT 1/MDT 2 specifies the current attenuation speed at constant current control.
The larger the rate (%), the larger the attenuation of the current. Also, the peak current value (current
TORQUE X changes the current peak value in four steps. Used to change the value of the current used,
With the CLK input method (decoder method), unless CLKs are counted, except MO, where the electrical
For example, used to change the excitation mode to another drive mode during output from MO
H
H
H
H
H
H
L
L
L
L
L
L
Initializes electrical angle to 0°
TORQUE 1
MDT 1
Reverse (CCW)
Forward (CW)
Normal operation
H
H
H
H
L
L
L
L
Function
Function
Comparator Reference Voltage
100% Mixed Decay mode (Fast Decay mode)
100%
85%
70%
50%
12.5% Mixed Decay mode
37.5% Mixed Decay mode
75% Mixed Decay mode
12
Function
TB62209F
2001-09-05