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参数资料
| 型号： | MC3PHACVDWE |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 30/36页 |
| 文件大小： | 0K |
| 描述： | IC MOTOR CONTROLLER 28-SOIC |
| 标准包装： | 26 |
| 应用： | AC 电机控制器，3 相 |
| 输出数： | 1 |
| 电源电压： | 4.5 V ~ 5.5 V |
| 工作温度： | -40°C ~ 105°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 28-SOIC W |
| 包装： | 管件 |
| 产品目录页面： | 808 (CN2011-ZH PDF) |
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Operation
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PWMPump — This state is entered from the PWM0RPM state when a CmdFwd or CmdRev
command is received. In this state the top PWM outputs are driven off while the bottom PWM
outputs are driven with a 50 percent duty cycle. This allows high side transistor gate drive circuits
which require charge pumping from the lower transistors to be charged up prior to applying full
PWMs to energize the motor. This state is automatically exited after the defined amount of time
t Pump (see Electrical Characteristics ).
FwdAccel — This state is entered from the PWMPump state after a CmdFwd command is
received and the timeout interval from the PWMPump state is completed. This state can also be
entered from the FwdSteady state if the Speed In variable is increased above the actual current
speed and the RevDecel state if the actual motor speed equals 0 r.p.m. when a CmdFwd command
has been received. In this state the motor is accelerated forward according to the chosen
parameters.
FwdSteady — This state is entered from the FwdAccel state after the actual motor speed has
reached the requested speed defined by the Speed In variable. In this state, the motor is held at a
constant forward speed.
FwdDecel — This state is entered from the FwdAccel or FwdSteady states whenever a CmdStop
or CmdRev command is received. This state can also be entered from the FwdSteady state if the
Speed In variable is decreased below the actual current speed. In this state, the motor is
decelerated forward according to the chosen parameters.
RevAccel — This state is entered from the PWMPump state. After a CmdRev command is
received and the timeout interval from the PWMPump state is completed. This state can also be
entered from the RevSteady state if the Speed In variable is increased above the actual current
speed and the FwdDecel state if the actual motor speed equals 0 r.p.m. when a CmdRev command
has been received. In this state, the motor is accelerated in reverse according to the chosen
parameters.
RevSteady — This state is entered from the RevAccel state after the actual motor speed has
reached the requested speed defined by the Speed In variable. In this state, the motor is held at a
constant reverse speed.
RevDecel — This state is entered from the RevAccel or RevSteady states whenever a CmdStop
or CmdFwd command is received. This state can also be entered from the RevSteady state if the
Speed In variable is decreased below the actual current speed. In this state, the motor is
decelerated in reverse according to the chosen parameters.
SetBaseFreq — This state is entered from any state whenever a CmdBaseFreqxx command is
received. In this state, the motor frequency at which full voltage is applied is configured and the
state is then automatically exited and the original state is re-entered.
SetAccel — This state is entered from any state whenever a write to the Acceleration variable
occurs. In this state, the motor acceleration is configured and the state is then automatically exited
and the original state is re-entered.
SetSpeed — This state is entered from any state whenever a write to the Speed In variable occurs.
In this state, the requested motor speed is configured and the state is then automatically exited and
the original state is re-entered.
Fault — This state is entered from any state whenever a fault condition occurs (see Fault
Protection on page 13 ). In this state, the PWM outputs are driven off (unless the fault state was
entered from the PWMHighZ state, in which case, the PWM outputs remain in the High Z state).
When the problem causing the fault condition is removed, a timer is started which will wait a
specified amount of time (which is user programmable) before exiting this state. Under normal
MC3PHAC Monolithic Intelligent Motor Controller, Rev. 2
Freescale Semiconductor
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