Q67000-A9103 SIEMENS [Siemens Semiconductor Group], Q67000-A9103 Datasheet - Page 16

• Manufacturer Part Number: Q67000-A9103
• Description: 2.5-A High Performance Smart Power Stepper-Motor Driver with Diagnostic Interface
• Manufacturer: SIEMENS [Siemens Semiconductor Group]

Figure 7
Semiconductor Group
V
Enable
QRSFF
SI OUT
Coil
Current
Actual
Voltage
RC/Sync
Chopper Mode with External Capacitor CT and Resistor RT
2.3 V
1.8 V
0.8 V
Phase = High or Low
C
Discharge operation is started
when nominal current is reached.
Voltage on RC/Sync was limited
internally to 2.3 V in charge
operation.
T
is discharged by
R
T
.
16
When coil current reaches nominal
value, sink transistor is turned off.
Independently of this, RC element is
charged up to 1.8 V and then
discharged.
Charge operation is controlled by
deadtime comparator. RC element is
charged with 1mA.
TLE 5250
AED01475
1998-02-01