MC3PHAC Freescale Semiconductor Rev. 2, 7/2005 Data Sheet MC3PHAC Monolithic Intelligent Motor Controller Overview The MC3PHAC is a high-performance monolithic intelligent motor controller designed specifically to meet the requirements for low-cost, variable-speed, 3-phase ac motor control systems. The device is adaptable and configurable, based on its environment. It contains all of the active functions required to implement the control portion of an open loop, 3-phase ac motor drive. One of the unique aspects of this device is that although it is adaptable and configurable based on its environment, it does not require any software development. This makes the MC3PHAC a perfect fit for customer applications requiring ac motor control but with limited or no software resources available. The device features are: Volts-per-Hertz speed control Digital signal processing (DSP) filtering to enhance speed stability 32-bit calculations for high-precision operation Internet enabled No user software development required for operation 6-output pulse-width modulator (PWM) 3-phase waveform generation 4-channel analog-to-digital converter (ADC) User configurable for standalone or hosted operation Dynamic bus ripple cancellation Selectable PWM polarity and frequency Selectable 50/60 Hz base frequency Phase-lock loop (PLL) based system oscillator Serial communications interface (SCI) Low-power supply voltage detection circuit Included in the MC3PHAC are protective features consisting of dc bus voltage monitoring and a system fault input that will immediately disable the PWM module upon detection of a system fault. Freescale Semiconductor, Inc., 2005. All rights reserved.Overview Some target applications for the MC3PHAC include: Low horsepower HVAC motors Home appliances Commercial laundry and dishwashers Process control Pumps and fans 3-PHASE AC MOTOR BUS VOLTAGE FEEDBACK RESISTIVE BRAKE CONTROL TO GATE DRIVES START/STOP FORWARD/REVERSE SPEED PWMs ACCELERATION MC3PHAC PWM FREQUENCY PASSIVE FAULT INITIALIZATION NETWORK SERIAL INTERFACE (OPTIONAL) Figure 1. MC3PHAC-Based Motor Control System As shown in Table 1, the MC3PHAC is offered in these packages: Plastic 28-pin dual in-line package (DIP) Plastic 28-pin small outline integrated circuit (SOIC) Plastic 32-pin quad flat pack (QFP) Table 1. Ordering Information Operating Device Package Temperature Range MC3PHACVP 40C to +105C Plastic 28-pin DIP MC3PHACVDW 40C to +105C Plastic 28-pin SOIC MC3PHACVFA 40C to +105C Plastic 32-pin QFP MC3PHAC Monolithic Intelligent Motor Controller, Rev. 2 2 Freescale Semiconductor AC IN