tb6560hq TOSHIBA Semiconductor CORPORATION, tb6560hq Datasheet - Page 8

• Manufacturer Part Number: tb6560hq
• Description: Pwm Chopper-type Bipolar Stepping Motor Driver Ic
• Manufacturer: TOSHIBA Semiconductor CORPORATION

5. Torque Settings (Current Value)
6. Protect and MO (Output Pins)
7. OSC
Condenser
Pin State
1000 pF
The current ratio used in actual operations is determined in regard to the current setting due to resistance.
Configure this for extremely low torque scenarios such as when Weak Excitation mode is stopped.
If there is no input with the pull-down resistor connection then the setting is 100% torque.
Y ou can configure settings from the receiving side by using an open-drain connection for the output pins
and making the pull-up voltage variable.
When a given pin is in its designated state it will go ON and output at Low level.
Output chopping waves are generated by connecting the condenser and having the CR oscillate.
The values are as shown below (roughly:
330 pF
100 pF
TQ2
Low
H
H
L
L
Z
Overheat protection operation
Oscillating Frequency
Normal operation
TQ1
H
H
L
L
Protect
130 kHz
400 kHz
44 kHz
(weak excitation)
Current Ratio
100%
75%
50%
20%
30% margin of error).
Other than initial state
Initial state
8
MO
Open-drain connection
TB6560HQ/FG
2006-05-31