AMIS30624C6245RG ON Semiconductor, AMIS30624C6245RG Datasheet - Page 33

• Manufacturer Part Number: AMIS30624C6245RG
• Description: IC STEPPER DVR I2C 800MA 32-NQFP
• Manufacturer: ON Semiconductor
• Type: I2C Micro Stepping Motor Driverr

Specifications of AMIS30624C6245RG

• Applications: Stepper Motor Driver, 2 Phase
• Number Of Outputs: 1
• Current - Output: 800mA
• Voltage - Supply: 8 V ~ 29 V
• Operating Temperature: -40°C ~ 165°C
• Mounting Type: Surface Mount
• Package / Case: 32-VSQFP
• Product: Stepper Motor Controllers / Drivers
• Operating Supply Voltage: 8 V to 29 V
• Supply Current: 800 mA
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Load: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 766-1002-2

AMIS-30624
14.3.7. Electrical Defect on Coils, Detection and Confirmation
The principle relies on the detection of a voltage drop on at least one transistor of the H-bridge. Then the decision is taken to open the
transistors of the defective bridge.
This allows the detection of the following short circuits:
Open circuits are detected by a 100 percent PWM duty cycle value during a long time.
Table 23: Electrical Defect Detection
Remark: One cannot detect an internal short in the motor.
14.3.8. Motor Shutdown Mode
A motor shutdown occurs when:
A motor shutdown leads to the following:
The I
The conditions to get out of a motor shutdown mode are:
This leads to H-bridges in Ihold mode, hence the circuit is ready to execute any positioning command.
This can be illustrated in the following sequence given as an application tip. The master can check whether there is a problem or not
and decide which application strategy to adopt.
2
C interface remains active, being able to receive orders or send status.
• External coil short circuit
• Short between one terminal of the coil and Vbat or Gnd
• The chip temperature rises above the thermal shutdown threshold Ttsd (see
• The battery voltage goes below UV2 (see
• Flag <ElDef> = ‘1’, meaning an electrical problem is detected on one or both coils, e.g. a short circuit
• Flag <CPFail> = ‘1’, meaning there is a charge pump failure
• H-bridges in high impedance mode
• The TagPos register is loaded with the ActPos (to avoid any motion after leaving the motor shutdown mode)
• Reception of a
• The four causes above are no longer detected
Y1 and Y2
X1 and X2
Xi and Yi
Yi or Xi
Yi or Xi
Yi or Xi
Pins
GetFullStatus1
command AND
Rev. 4 | Page 33 of 56 | www.onsemi.com
Battery Voltage
Management)
Short circuit to GND
Short circuit to Vbat
Short circuited
Short circuited
Short circuited
Fault Mode
Open
Thermal Shutdown
Mode)