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NXP Semiconductors MC3PHACVDWE
- Part No.:
- MC3PHACVDWE
- Manufacturer:
- NXP Semiconductors
- Category:
- Motor Drivers, Controllers
- Package:
- 28-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MC3PHACVDWE.pdf
- Description:
- AC MOTOR CONTROLLER, CMOS, PDSO2
- Quantity:
- Payment:
- Shipping:
Inventory:16,963
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Product details
Overview
MC3PHACVDWE from Freescale Semiconductor is a monolithic intelligent 3-phase AC motor controller implementing open-loop volts-per-hertz speed control without software development. It integrates a 4.00 MHz PLL-based oscillator, six PWM outputs (U/V/W top/bottom), 4-channel ADC, and dynamic bus ripple cancellation. Designed for HVAC blowers, home appliance pumps, and commercial dishwashers.
For engineers reviewing the MC3PHACVDWE datasheet, MC3PHACVDWE pinout, MC3PHACVDWE application, or MC3PHACVDWE equivalent, this page delivers verified technical context, standalone-mode parameter mapping (PWM frequency, dead time, voltage boost), fault protection behavior, and real-world motor control integration constraints - all confirmed against Freescale Rev. 2 (7/2005) documentation.
Technical Context
The MC3PHACVDWE implements a fixed-function DSP-based motor control architecture with no programmable firmware. Its 32-bit calculation engine enables 4 mHz speed resolution and linear velocity interpolation every 189 µs (252 µs at 15.9 kHz PWM). The device uses a third-harmonic-injected 3-phase waveform updated at 5.3 kHz (4.0 kHz at 15.9 kHz PWM) to achieve 15% higher bus utilization than pure sine modulation.
Standalone operation relies on analog voltage inputs (MUX_IN, SPEED, ACCEL, DC_BUS) sampled during initialization or runtime, with scaling factors of 25.6 Hz/V (speed), 25.6 Hz/sec/V (acceleration), and 8%/V (voltage boost, 0–40%). Fault handling includes immediate PWM disable on FAULTIN high, dc bus monitoring at 5.3 kHz, and retry timeout configurable via RETRY_TxD-driven MUX_IN sampling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Voltage | 5.0 V ±10% - powers digital logic and enables internal low-voltage reset at 3.80–4.3 V |
| PWM Frequency Range | 5.291–21.164 kHz - four discrete selectable frequencies via MUX_IN voltage (0–1 V, 1.5–2.25 V, etc.) |
| Speed Control Range | 1–128 Hz - mapped linearly to 0–5 V on SPEED pin (25.6 Hz/V), filtered by 24-bit IIR digital filter |
| Acceleration Range | 0.5–128 Hz/sec - mapped linearly to 0–5 V on ACCEL pin (25.6 Hz/sec/V) |
| Dead Time Range | 0.5–6.0 µs in standalone mode - set via DT_FAULTOUT-driven MUX_IN sampling (2.075 µs/V) |
| Voltage Boost Range | 0–40% in standalone mode - set via VBOOST_MODE-driven MUX_IN sampling (8%/V) |
| Oscillator Frequency | 4.00 ±1% MHz - crystal/resonator-based PLL clock with noise immunity and reliable startup |
Pinout & Package
MC3PHACVDWE is packaged in a plastic 28-pin SOIC (Small Outline Integrated Circuit) with 0.600-inch body width and standard 1.27 mm pitch. Pin functions are identical to the 28-pin DIP variant per Freescale Rev. 2 datasheet Figure 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VREF | ADC reference input | Tied to VDDA for optimal SNR; sets full-scale range of 4-channel analog inputs |
| PWM_U_TOP / PWM_U_BOT | Phase U gate drive outputs | Complementary PWM signals controlling high-side/low-side transistors of motor phase U |
| FAULTIN | System fault input | Logic-high assertion disables all six PWM outputs immediately; initiates retry timer on return to low |
| MUX_IN | Multi-function analog input | Configures PWM frequency, dead time, voltage boost, or base frequency depending on active control pin (PWMFREQ_RxD, DT_FAULTOUT, etc.) |
| VBOOST_MODE | Mode select / voltage boost indicator | High = standalone mode; driven low during initialization to signal MUX_IN voltage reading for boost setting |
Key Features
| Feature | Design Value |
|---|---|
| Third-harmonic injection | Increases fundamental output amplitude by 15% vs. pure sine wave, enabling full DC bus voltage utilization |
| Dynamic bus ripple cancellation | Compensates PWM duty cycle in real time for ±50% bus voltage variation at 5.3 kHz, suppressing 60 Hz hum and reducing I²R losses |
| High-side bootstrapping sequence | Applies 100 ms of 50% low-side-only PWM at startup to recharge high-side charge pump capacitors before full modulation begins |
| Velocity pipelining | Generates interpolated velocity updates every 189 µs (252 µs at 15.9 kHz), eliminating ratcheting and enabling ultra-smooth torque transitions |
| Lost-clock protection | Disables PWM and resets device if OSC1 signal fails - satisfies safety agency dead-crystal test requirements |
Applications
| Residential HVAC Blowers | Commercial Dishwashers |
|---|---|
Use Scenario: Variable-speed blower control in split-system air handlers requiring quiet, energy-efficient airflow across wide load ranges. IC Role / Device Role / Timing Role: MC3PHACVDWE acts as the sole motor control ASIC, generating third-harmonic-injected 3-phase PWM waveforms and regulating voltage/frequency profile based on analog speed command. Use Value: Eliminates need for MCU firmware development while delivering 4 mHz speed resolution and dynamic bus ripple compensation to maintain torque stability during line voltage sags. | Use Scenario: Pump motor control in undercounter dishwashers where compact size, EMI robustness, and stall recovery are critical. IC Role / Device Role / Timing Role: MC3PHACVDWE serves as the integrated motor controller, using FAULTIN to detect pump jam and RBRAKE to dissipate regenerative energy into a bus resistor. Use Value: Enables single-chip implementation with automatic retry timeout (configurable 1–60 sec) and high-side bootstrapping to ensure reliable restart after thermal shutdown or mechanical blockage. |
| Home Appliance Washing Machines | Industrial Process Pumps |
Use Scenario: Drum motor drive in front-load washers requiring smooth acceleration/deceleration and low-speed torque boost for heavy loads. IC Role / Device Role / Timing Role: MC3PHACVDWE executes volts-per-hertz control with user-configurable voltage boost (0–40%) and acceleration rate (0.5–128 Hz/sec) via analog inputs. Use Value: Delivers gentle voltage ramping through ±1 Hz to prevent mechanical "pop" during spin-start, while 24-bit DSP filtering on SPEED input rejects noise from shared power rails. | Use Scenario: Constant-pressure booster pump in building management systems needing stable flow under fluctuating inlet pressure. IC Role / Device Role / Timing Role: MC3PHACVDWE functions as the embedded motor controller, using DC_BUS monitoring to compensate for rectifier ripple and maintain consistent motor current despite AC line harmonics. Use Value: Achieves <±1% speed regulation over 10:1 input voltage range via real-time bus ripple cancellation, reducing need for external analog feedback loops. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 3-phase motor controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC3PHACVP | Identical silicon die and electrical specs; packaged in 28-pin PDIP instead of SOIC | No difference in motor control functionality; differs only in package thermal resistance and board assembly method | Select MC3PHACVP for through-hole prototyping or legacy PCBs; MC3PHACVDWE preferred for surface-mount volume production |
| MC3PHACVFA | Same core functionality but in 32-pin QFP with additional VSS pins and improved thermal dissipation | Supports higher ambient temperatures (same -40°C to +105°C rating) and higher continuous power due to enhanced package thermal performance | Choose MC3PHACVFA for high-power fan/pump designs exceeding 500 W where SOIC thermal limits may be exceeded |
Compared with MC3PHACVP and MC3PHACVFA, the MC3PHACVDWE offers identical motor control intelligence and analog configuration interface in a space-saving SOIC package optimized for automated SMT assembly, while maintaining full compatibility with Freescale's standalone mode setup and PC master software protocol.
Availability
MC3PHACVDWE is available at Aetrix Electronics and suitable for residential HVAC, commercial dishwasher, and industrial pump applications requiring stable component supply, long-term lifecycle support, and traceable sourcing from authorized channels.
Supply support for MC3PHACVDWE includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Freescale Semiconductor was a leading designer of embedded processors and analog/mixed-signal ICs, acquired by NXP Semiconductors in 2015. Its motor control portfolio emphasized cost-effective, software-free solutions for appliance and industrial markets.
The MC3PHACVDWE belongs to Freescale's monolithic intelligent motor controller product line, designed specifically for low-cost, variable-speed 3-phase AC induction motor drives where MCU-based firmware development is impractical or unavailable.
FAQ
What is the function of the MUX_IN pin on the MC3PHACVDWE?
The MUX_IN pin on the MC3PHACVDWE serves multiple configuration roles in standalone mode: it reads analog voltages to set PWM frequency, dead time, voltage boost, or base frequency depending on which control pin (PWMFREQ_RxD, DT_FAULTOUT, VBOOST_MODE, or PWMPOL_BASEFREQ) is actively driving low. This eliminates the need for digital programming interfaces while retaining precise analog tuning capability.
Does the MC3PHACVDWE require external microcontroller firmware to operate?
No, the MC3PHACVDWE does not require external microcontroller firmware to operate. It is a fixed-function ASIC with embedded DSP logic that executes volts-per-hertz motor control autonomously. All parameters - including speed, acceleration, PWM frequency, and voltage boost - are configured via analog voltage inputs or hardware jumpers, making it ideal for applications with limited or no software resources.
How does the MC3PHACVDWE handle DC bus voltage fluctuations during motor operation?
The MC3PHACVDWE performs dynamic bus ripple cancellation by continuously monitoring the DC_BUS pin at 5.3 kHz (4.0 kHz at 15.9 kHz PWM) and adjusting PWM duty cycles in real time to counteract voltage deviations from the nominal 3.5 V reference. This maintains consistent motor torque despite line-frequency ripple or brown-out conditions, directly improving system efficiency and acoustic performance.
What is the purpose of the RBRAKE pin on the MC3PHACVDWE?
The RBRAKE pin on the MC3PHACVDWE is an open-drain output that drives high when the DC bus voltage exceeds a preset threshold, signaling overvoltage conditions. It is intended to activate an external braking resistor across the DC bus capacitor to safely dissipate regenerative energy during motor deceleration or overload events, protecting power electronics from voltage stress.
Can the MC3PHACVDWE operate in both standalone and host-controlled modes?
Yes, the MC3PHACVDWE supports two distinct operating modes: standalone mode (VBOOST_MODE = high), where all parameters are set via analog inputs and hardware jumpers; and PC master software mode (VBOOST_MODE = low), where a host microcontroller or PC sends UART commands via RETRY_TxD/PWMFREQ_RxD to dynamically reconfigure speed, acceleration, dead time, and voltage boost in real time without resetting the device.
MC3PHACVDWE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 28-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Motor Type - Stepper:
- -
- Motor Type - AC, DC:
- AC, Synchronous
- Function:
- Controller - Commutation, Direction Management
- Output Configuration:
- Pre-Driver - Half Bridge (3)
- Interface:
- Serial
- Technology:
- IGBT
- Step Resolution:
- -
- Applications:
- General Purpose
- Current - Output:
- -
- Voltage - Supply:
- 4.5V ~ 5.5V
- Voltage - Load:
- -
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-SOIC
MC3PHACVDWE FAQ
1.How can I place an order for MC3PHACVDWE through Aetrix?
Please submit a Request for Quotation (RFQ) for MC3PHACVDWE on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MC3PHACVDWE reliable?
The price and inventory of MC3PHACVDWE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC3PHACVDWE is usually 5 days.
3.What payment methods are accepted for MC3PHACVDWE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC3PHACVDWE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC3PHACVDWE?
MC3PHACVDWE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC3PHACVDWE order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MC3PHACVDWE?
For technical support, including MC3PHACVDWE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC3PHACVDWE requirements.
6.How does Aetrix verify that MC3PHACVDWE is sourced from the original manufacturer or authorized distributors?
All MC3PHACVDWE products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MC3PHACVDWE meets industry standards.
7.What is the process for return or replacement of MC3PHACVDWE?
All MC3PHACVDWE units undergo pre-shipment inspection (PSI). If there is an issue with MC3PHACVDWE, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MC3PHACVDWE part is unused and in its original packaging.
Return procedure for MC3PHACVDWE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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