AMIS30624C6245RG ON Semiconductor, AMIS30624C6245RG Datasheet - Page 34

• 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
Important: While in shutdown mode, since there is no hold current in the coils, the mechanical load can cause a step loss, which
cannot be flagged by the AMIS-30624.
Warning: The application should limit the number of consecutive
shutdown mode. When this proves to be unsuccessful, for example if there is a permanent defect, the reliability of the circuit could be
altered since
14.4 Motion Detection
Motion detection is based on the back emf generated internally in the running motor. When the motor is blocked, for example when it
hits the end-position, the velocity and as a result also the generated back emf, is disturbed. The AMIS-30624 senses the back emf,
calculates a moving average and compares the value with two independent threshold levels: Absolute threshold
Delta threshold
(MinSamples, FS2StallEn and DC100SDis) are outside the scope of this datasheet. Detailed information is available in a dedicated
white paper “Robust Motion Control with AMIS-3062x Stepper Motor Drivers”, available on http://www.amis.com/.
If the motor is accelerated by a pulling or propelling force and the resulting back emf increases above the Delta threshold (+ ΔTHR),
then <DelStallHi> is set. When the motor is slowing down and the resulting back emf decreases below the Delta threshold
(- ΔTHR), then <DelStallLo> is set. When the motor is blocked and the velocity is zero after the acceleration phase, the back emf is
low or zero. When this value is below the Absolute threshold, <AbsStall> is set. The <Stall> flag is the OR function of
<DelStallLo> OR <DelStallHi> OR <AbsStall>.
GetFullStatus1
- The circuit is driven in
- The application is not
(DelThr[3:0]
<ElDef> = ‘1’ or
<CpFail> = ‘1’
motor shutdown
mode
aware of this
Vbb ≤ UV2 or
Tj ≥ Tsd or
↓
Figure 21: Example of Possible Sequence Used to Detect and Determine Cause of Motor Shutdown
). Instructions for the correct use of these two levels in combination with three additional parameters
attempts to disable the protection of the H-bridges.
- The position set-point
- Motor shutdown
- The application is still
SetPosition
is updated by the
I
mode ⇒ no motion
unaware
2
C Master
frame
Rev. 4 | Page 34 of 56 | www.onsemi.com
↑
GetFullStatus1
- The application is
- Reset <TW> or <TSD> or <UV2> or <StepLoss>
- Possible new detection of over temperature or
GetFullStatus1
aware of a problem
or <ElDef> or <CPFail> by the application
low voltage or electrical problem ⇒ Circuit
sets <TW> or <TSD> or <UV2> or
<StepLoss> or <ElDef> or <CPFail>
again at ‘1’
frame
↑
commands to try to get the AMIS-30624 out of
- Possible confirmation
GetFullStatus1
of the problem
↑…
frame
(AbsThr[3:0]
) and