tb6560aftg TOSHIBA Semiconductor CORPORATION, tb6560aftg Datasheet - Page 24

• Manufacturer Part Number: tb6560aftg
• Description: Pwm Chopper-type Bipolar Driver Ic For Stepping Motor Control
• Manufacturer: TOSHIBA Semiconductor CORPORATION

Current Discharge Path when ENABLE is Set as Low During Operation
following modes:
the reverse direction to that in normal operation; as a result, the parasitic diodes are not used. However, when all
the output transistors are forced off, the coil energy is discharged via the parasitic diodes.
OFF
ON
When all the output transistors are forced off during Slow Decay mode, the coil energy is discharged in the
As shown in the figure above, output transistors have parasitic diodes.
Normally, when the energy of the coil is discharged, each transistor is turned on allowing the current to flow in
L1
U1
Note: Parasitic diodes are located on dotted lines. However, they are not normally used in normal Mixed Decay
mode.
R
Charge Mode
NF
Load
Note
VM
PGND
OFF
U2
ON
L2
OFF
ON
L1
U1
R
NF
Slow Mode
Load
Note
VM
24
PGND
ENABLE is set as low
L2
OFF
U2
ON
OFF
OFF
L1
U1
Forced OFF Mode
R
NF
TB6560AFTG
VM
Note
Load
PGND
2011-05-23
OFF
OFF
U2
L2