AMIS30622C6228G ON Semiconductor, AMIS30622C6228G Datasheet - Page 14

• Manufacturer Part Number: AMIS30622C6228G
• Description: IC MOTOR DVR MICROSTP I2C 32NQFP
• Manufacturer: ON Semiconductor
• Type: Micro Stepping Motor Driverr

Specifications of AMIS30622C6228G

• Applications: Stepper Motor Driver
• Number Of Outputs: 1
• Current - Output: 800mA
• Voltage - Supply: 6.5 V ~ 29 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 32-VSQFP
• Operating Supply Voltage: 5 V
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Load: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Position Ranges
chosen stepping mode, the position range will be as shown in the following table.
coded on 16 bits, the position word will have to be shifted to
the left by a certain number of bits, according to the stepping
mode.
Important
NOTES: The secure position is disabled in case the programmed value is the reserved code “10000000000” (0x400 or most negative
Shaft
command SetMotorParam, defines whether a positive
motion is a clockwise (CW) or counter−clockwise rotation
(CCW) (an outer or an inner motion for linear actuators):
Stepper Motordriver
control logic. The main features are:
•
Table 11. POSITION RANGE
Table 12. SECURE POSITION
A position is coded by using the binary two’s complement format. According to the positioning commands used and to the
When using the command SetPosition, although
A shaft bit, which can be programmed in OTP or with
See also the Block Diagram in Figure 1.
The Motordriver receives the control signals from the
Two H−bridges, designed to drive a stepper motor with
two separated coils. Each coil (X and Y) is driven by
one H−bridge, and the driver controls the currents
flowing through the coils. The rotational position of the
rotor, in unloaded condition, is defined by the ratio of
current flowing in X and Y. The torque of the stepper
motor when unloaded is controlled by the magnitude of
the currents in X and Y.
SetPosition
Command
position).
The resolution of the secure position is limited to 9 bit at start−up. The OTP register is copied in RAM as illustrated below. The
RAM bits SecPos1 and SecPos0 are set to 0.
SecPos10
SecPos10
1/16
1/4
1/8
Stepping Mode
th
th
Half−stepping
th
micro−stepping
micro−stepping
1/16
micro−stepping
SecPos9
SecPos9
1/4
1/8
Stepping Mode
th
th
Half−stepping
th
micro−stepping
micro−stepping
micro−stepping
SecPos8
SecPos8
STRUCTURAL DESCRIPTION
http://onsemi.com
−16384 to +16383
−32768 to +32767
−4096 to +4095
−8192 to +8191
Position Range
14
Secure Position
11−bits, thus having a lower resolution than normal
positions, as shown in the following table. See also
command GotoSecurePosition.
•
•
•
•
•
•
block, which provides the required information to the
control logic part. The same applies for detection and
A secure position can be programmed. It is coded in
Battery voltage monitoring is also performed by this
Shaft = 0 ⇒ MOTXP is used as positive pin of the X
coil, while MOTXN is the negative one.
Shaft = 1 ⇒ opposite situation
The control block for the H−bridges, including the
PWM control, the synchronous rectification and the
internal current sensing circuitry.
The charge pump to allow driving of the H−bridges’
high side transistors.
Two pre−scale 4−bit DAC’s to set the maximum
magnitude of the current through X and Y.
Two DAC’s to set the correct current ratio through X
and Y.
SecPos2
SecPos2
Secure Position Resolution
Full Range Excursion
SecPos1
32 micro−steps (1/16
16 micro−steps (1/8
16384 micro−steps
32768 micro−steps
65536 micro−steps
8 micro−steps (1/4
8192 half−steps
4 half−steps
SecPos0
th
th
th
)
)
)
Number of Bits
RAM
OTP
13
14
15
16