At the core of the MC3PHAC's capabilities is an advanced PWM module designed specifically to meet the demanding requirements of high performance AC drives. The module is clocked at 8 MHz (125 ns between timer tics), and generates six center-aligned PWMs in three groups of complimentary PWMs. This allows the MC3PHAC to connect directly to inverters that are indigenous to almost all three-phase AC motor drives
Recent advancements in PWM generation and control
techniques have been combined with state-of-the-art
control algorithms in a pre-programmed solution
referred to as the MC3PHAC, which is designed to
dramatically minimize up front development costs and
time to market in variable speed AC motor control
applications. Even though the device requires no
programming, flexibility has been maintained, allowing
the user to customize the device to a particular
application. Particular attention has been given to the
safety and fault processing features, including “dead
crystal” shutdown, hardware fault shutdown, and DC bus
monitoring/protection.
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