MC3PHAC Motorola, MC3PHAC Datasheet - Page 8

• Manufacturer Part Number: MC3PHAC
• Description: 3-Phase AC Motor Controller
• Manufacturer: Motorola

MC3PHAC/D
8
Number
Pin
15
16
17
18
19
20
21
22
23
24
25
PWMFREQ_RxD
VBOOST_MODE
DT_FAULTOUT
RETRY_TxD
Pin Name
RBRAKE
FAULTIN
MUX_IN
START
FWD
V
V
DD
SS
Table 2. MC3PHAC Pin Descriptions (Sheet 2 of 3)
Freescale Semiconductor, Inc.
For More Information On This Product,
A logic high on this input will immediately disable the PWM outputs. A
In standalone mode, this pin is an output that drives low to indicate the
In standalone mode, this pin is an output that drives low to indicate the
Output which is driven to a logic high whenever the voltage on the dc bus
In standalone mode, this pin is an output which drives low to indicate the
At startup, this input is sampled to determine whether to enter standalone
+5-volt digital power supply to the MC3PHAC
Digital power supply ground return for the MC3PHAC
Input which is sampled to determine whether the motor should rotate in
Input which is sampled to determine whether the motor should be
In standalone mode, during initialization this pin is an output that is used
retry timeout interval will be initiated once this pin returns to a logic low
state.
parameter mux input pin is reading an analog voltage to specify the
desired PWM frequency. In PC master software mode, this pin is an
input which receives UART serial data.
parameter mux input pin is reading an analog voltage to specify the time
to wait after a fault before re-enabling the PWM outputs. In PC master
software mode, this pin is an output that transmits UART serial data.
input pin exceeds a preset level, indicating a high bus voltage. This
signal is intended to connect a resistor across the dc bus capacitor to
prevent excess capacitor voltage.
parameter mux input pin is reading an analog voltage to specify the
dead-time between the on states of the top and bottom PWM signals for
a given motor phase. In PC master software mode, this pin is an output
which goes low whenever a fault condition occurs.
mode (logic high) or PC master software mode (logic low). In
standalone mode, this pin is also used as an output that drives low to
indicate the parameter mux input pin is reading an analog voltage to
specify the amount of voltage boost to apply to the motor.
the forward or reverse direction
running.
to determine PWM polarity and base frequency. Otherwise, it is an
analog input used to read several voltage levels that specify MC3PHAC
operating parameters.
3-Phase AC Motor Controller
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Pin Function
MOTOROLA