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| 型号： | AMIS30623C6238G |
| 厂商： | ON Semiconductor |
| 文件页数： | 32/61页 |
| 文件大小： | 0K |
| 描述： | IC MOTOR DRIVER/CTLR 20-SOIC |
| 标准包装： | 38 |
| 应用： | 步进电机驱动器 |
| 评估套件： | 可供 |
| 输出数： | 1 |
| 电流 - 输出： | 800mA |
| 电源电压： | 6.5 V ~ 29 V |
| 工作温度： | -40°C ~ 165°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 20-SOIC |
| 包装： | 管件 |
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AMIS ? 30623
Motor Starting Phase
At motion start, the currents in the coils are directly
switched from <Ihold> to <Irun> with a new
sine/cosine ratio corresponding to the first half (or micro ? )
step of the motion.
Motor Stopping Phase
At the end of the deceleration phase, the currents are
maintained in the coils at their actual DC level (hence
keeping the sine/cosine ratio between coils) during the
stabilization time t stab (see AC Table). The currents are then
set to the hold values, respectively Ihold x sin( TagPos )
and Ihold x cos( TagPos ), as illustrated below. A new
positioning order can then be executed.
Iy
Ix
Figure 19. Motor Stopping Phase
t stab
t
Charge Pump Monitoring
If the charge pump voltage is not sufficient for driving the
high side transistors (due to failure), an internal HardStop
command is issued. This is acknowledged to the master by
raising flag <CPFail> (available with command
GetFullStatus ).
In case this failure occurs while a motion is ongoing, the
flag <StepLoss> is also raised.
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 the following short circuits:
? External coil short circuit
? Short between one terminal of the coil and Vbat or Gnd
One cannot detect an internal short in the motor.
Open circuits are detected by 100% PWM duty cycle
value during one electrical period with duration, determined
by Vmin.
Table 24. ELECTRICAL DEFECT DETECTION
Motor Shutdown Mode
A motor shutdown occurs when:
? The chip temperature rises above the thermal shutdown
threshold Ttsd (see Thermal Shutdown Mode).
? The battery voltage goes below UV2 for longer than 15
seconds (see Battery Voltage Management).
? The charge pump voltage goes below the charge pump
comparator level for more than 15 seconds.
? Flag <ElDef> = ‘1’, meaning an electrical problem is
detected on one or both coils, e.g. a short circuit.
A motor shutdown leads to the following:
? H ? bridges in high impedance mode.
? The <TagPos> register is loaded with the <ActPos>,
except in autarkic states.
? The LIN interface remains active, being able to receive
orders or send status.
The conditions to get out of a motor shutdown mode are:
? Reception of a GetStatus or GetFullStatus
command AND
? The four above causes are no longer detected
Pins
Yi or Xi
Yi or Xi
Yi or Xi
Y1 and Y2
X1 and X2
Xi and Yi
Fault Mode
Short ? circuit to GND
Short ? circuit to Vbat
Open
Short circuited
Short circuited
Short circuited
This leads to H ? bridges going in Ihold mode. Hence, the
circuit is ready to execute any positioning command.
http://onsemi.com
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| AMIS30623C6238RG | 功能描述:马达/运动/点火控制器和驱动器 LIN STEPPER DRIVER STALL RoHS:否 制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube |
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| AMIS30623C6239RG | 功能描述:马达/运动/点火控制器和驱动器 LIN 800mA STEPPER DRIVER RoHS:否 制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube |
| AMIS30623C623AG | 功能描述:马达/运动/点火控制器和驱动器 LIN 800mA STEPPER DRIVER RoHS:否 制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube |
| AMIS30623C623ARG | 功能描述:马达/运动/点火控制器和驱动器 800mA CNTRL LIN BUS MICRO STP/STALL DET RoHS:否 制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube |
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