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Texas Instruments MCF8329A1IREER
- Part No.:
- MCF8329A1IREER
- Manufacturer:
- Texas Instruments
- Category:
- Gate Drivers
- Package:
- 36-WFQFN Exposed Pad
- Datasheet:
-
MCF8329A1IREER.pdf
- Description:
- IC GATE DRVR HALF-BRIDGE 36WQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,516
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Product details
Overview
MCF8329A1IREER from Texas Instruments is a sensorless Field-Oriented Control (FOC) three-phase BLDC gate driver IC with integrated motor control algorithm, 65-V gate drive capability, single-shunt current sensing, 3.3-V ±3% AVDD LDO (50 mA), and EEPROM-based configuration storage. It supports up to 75-kHz PWM, 1.8-kHz electrical frequency FOC, and operates from 4.5 V to 60 V - used in cordless vacuum cleaners and appliance pumps.
For engineers reviewing the MCF8329A1IREER datasheet, MCF8329A1IREER pinout, MCF8329A1IREER application, or MCF8329A1IREER equivalent, key selection considerations include bootstrap-based 65-V three-phase gate drive architecture, integrated current sense amplifier with 5–40 V/V gain, sleep mode current ≤5 µA at 24 V, speed loop accuracy <3%, and I²C-configurable non-volatile motor startup profiles.
Technical Context
The MCF8329A1IREER implements a code-free, sensorless FOC engine with offline back-EMF measurement, flux weakening, MTPA optimization, and 5-point reference profile support. Its control core accepts analog, PWM, frequency, or I²C commands and delivers closed-loop speed, current, power, or modulation index regulation.
It integrates a 65-V three-phase pre-driver with bootstrap architecture, 1-A/2-A peak source/sink gate current, trickle charge pump for 100% duty cycle, and independent DRVOFF shutdown path. Protection includes UVLO on PVDD, VREG, GVDD, AVDD, BSTx, thermal shutdown, motor lock detection (3 types), OCP, and fault reporting via nFAULT or I²C diagnostics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range | 4.5 V to 60 V - powers gate drivers and internal regulators directly from bridge supply; enables wide-input industrial and battery-powered BLDC systems. |
| Gate Drive Voltage | Up to 65 V - supports high-voltage N-channel MOSFETs in 24–60 V motor drives without external level shifters. |
| PWM Frequency | 0–75 kHz - accommodates low-inductance motors and enables high-resolution torque control with minimal acoustic noise. |
| Current Sense Gain | 5 / 10 / 20 / 40 V/V - selectable gain allows precise shunt-based phase current measurement across diverse motor current ranges. |
| Sleep Current | ≤5 µA at VPVDD = 24 V, TA = 25°C - enables ultra-low-power standby in battery-operated tools and portable appliances. |
| Speed Loop Accuracy | <3% with internal clock - ensures stable closed-loop speed regulation without external timing components. |
| AVDD LDO Output | 3.3 V ±3%, 50 mA - powers external logic or sensors with tight regulation; supports AVDD-to-VREG connection for simplified supply routing. |
Pinout & Package
VQFN-36 package (5.00 mm × 4.00 mm) with exposed thermal pad - optimized for thermal dissipation in compact motor control modules; requires soldering thermal pad to PCB ground plane per TI layout guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GHx / GLx (x=A,B,C) | High-/low-side gate driver outputs | Drive N-MOSFET gates; GHx sourced from BSTx, GLx referenced to LSS; support 1-A/2-A peak current for fast switching. |
| BSTx (x=A,B,C) | Bootstrap capacitor node | Provides floating high-side gate voltage; requires 1-µF, 25-V X5R/X7R ceramic cap to corresponding SHx pin. |
| SHx / LSS | High-side source / low-side common source | SHx connects to high-side MOSFET source; LSS ties all low-side sources - enables VDS monitoring and OCP sensing. |
| SN / SP | Current sense amplifier inputs | Accept differential voltage across single shunt resistor; SN = low-side shunt terminal, SP = high-side shunt terminal. |
| nFAULT | Fault indicator output | Open-drain logic-low signal during UVLO, OCP, TSD, or motor lock; requires external pull-up (1.8–5 V) even if unused. |
| SPEED/WAKE | Multi-function analog/PWM/freq input + wake command | Configurable as speed reference or wake trigger; supports 0.01–95 kHz PWM with resolution up to 14 bits depending on frequency band. |
Key Features
| Feature | Design Value |
|---|---|
| Sensorless FOC Engine | Code-free, single-shunt implementation with offline back-EMF calibration, flux weakening, and MTPA - eliminates position sensor and firmware development effort. |
| Bootstrap Architecture w/ Trickle Pump | Enables 100% duty cycle operation and robust high-side drive without external charge pumps or complex bootstrap diode networks. |
| Integrated Protection Suite | Includes PVDD/VREG/GVDD/AVDD/BSTx UVLO, thermal shutdown, 3-mode motor lock detection, OCP, and fault reporting - reduces external protection circuitry count. |
| Configurable Non-Volatile Memory | EEPROM stores motor parameters, startup profiles, and control settings - allows standalone operation after initial I²C configuration. |
| Spread Spectrum EMI Reduction | Modulates switching frequency to lower peak EMI emissions - simplifies compliance testing for Class B conducted/radiated emissions. |
Applications
| Cordless Vacuum Cleaners | Washer & Dishwasher Pumps |
|---|---|
|
Use Scenario: High-speed BLDC motor drive in handheld or upright cordless vacuums requiring rapid acceleration, variable suction, and battery-efficient operation. IC Role / Device Role / Timing Role: Sensorless FOC gate driver executing real-time commutation, current regulation, and overcurrent protection without rotor position feedback. Use Value: Enables >85% efficiency at partial load, <3% speed regulation error, and <5 µA sleep current - extending runtime per charge cycle. |
Use Scenario: Compact, sealed pump module in residential washing machines and dishwashers needing quiet, reliable water circulation under varying pressure loads. IC Role / Device Role / Timing Role: Integrated three-phase pre-driver with analog/PWM speed command interface and closed-loop current control for smooth torque delivery. Use Value: Delivers improved acoustic performance via automatic dead-time compensation and supports 75-kHz PWM for low-noise operation at low speeds. |
| Appliance Fans | Cordless Power Tools |
|
Use Scenario: Variable-speed cooling fan in refrigerators, ovens, or HVAC units where airflow must adapt to thermal load while minimizing audible noise. IC Role / Device Role / Timing Role: Standalone motor controller with configurable 5-point speed profile and DACOUT real-time variable monitoring for system diagnostics. Use Value: Reduces design complexity by embedding FOC algorithm and EEPROM storage - eliminating need for external MCU and motor tuning software. |
Use Scenario: High-torque, high-RPM BLDC drive in cordless drills, saws, and lawnmowers powered by 18–60 V Li-ion packs with aggressive duty cycles. IC Role / Device Role / Timing Role: Robust gate driver with independent DRVOFF shutdown path, anti-surge protection, and thermal monitoring for safety-critical tool applications. Use Value: Supports 65-V operation and 100% duty cycle - enabling full-battery-voltage utilization and sustained high-power bursts without gate drive dropout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar three-phase BLDC gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DRV8323RSRTVT | Requires external MCU for FOC execution; no integrated sensorless algorithm or EEPROM; 60-V max PVDD; supports dual-shunt current sensing only. | Used where full firmware control is preferred; lacks code-free startup and auto-tuning capabilities of MCF8329A1IREER. | Select when custom motor control algorithms or multi-motor synchronization are required - not for plug-and-play FOC deployment. |
| MCF8316A1IRHBT | Same family, but 48-V max PVDD; smaller 24-pin VQFN (4×4 mm); no trickle charge pump; supports only up to 50-kHz PWM. | Targeted at lower-voltage, space-constrained applications like small fans or low-power pumps - not suitable for 60-V cordless tools. | Choose for cost-sensitive, lower-power designs where 65-V rating and 75-kHz PWM are unnecessary. |
Compared with DRV8323RSRTVT and MCF8316A1IRHBT, the MCF8329A1IREER uniquely combines 65-V operation, embedded sensorless FOC, EEPROM configuration, and 75-kHz PWM - making it optimal for high-voltage, code-free BLDC systems demanding rapid time-to-market.
Availability
MCF8329A1IREER is available at Aetrix Electronics and suitable for cordless vacuum cleaners, washer/dishwasher pumps, and cordless power tools requiring stable component supply, long-term production continuity, and automotive-grade reliability.
Supply support for MCF8329A1IREER 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
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and power management technologies - delivering high-reliability solutions for industrial, automotive, and consumer markets.
The MCF8329A1IREER belongs to TI's Motor Drive IC product line, engineered specifically for sensorless, code-free BLDC motor control in battery-powered and mains-connected appliances - reducing system cost and accelerating development.
FAQ
What is the maximum PVDD voltage supported by the MCF8329A1IREER?
The MCF8329A1IREER supports an absolute maximum PVDD voltage of 65 V, with recommended operating range from 4.5 V to 60 V. This 60-V upper limit ensures safe continuous operation under transient conditions while enabling compatibility with 48-V and 60-V battery systems used in cordless power tools and high-end appliances. Exceeding 65 V risks permanent damage per absolute maximum ratings.
Does the MCF8329A1IREER require an external microcontroller to operate?
No - the MCF8329A1IREER executes sensorless FOC autonomously using its embedded control engine. Once configured via I²C and stored in EEPROM, it operates stand-alone with analog, PWM, frequency, or I²C speed commands. No external MCU is needed for basic motor control, though one may be used for system-level coordination or advanced diagnostics.
How does the MCF8329A1IREER handle motor startup without position sensors?
The MCF8329A1IREER uses a configurable open-loop startup sequence followed by seamless transition to sensorless FOC based on back-EMF detection. It supports offline motor parameter measurement (inductance, resistance, pole pairs) and stores results in EEPROM. Startup options include align-and-spin, ramp-and-spin, and forced-commutation modes - all adjustable without firmware changes.
What protection features are integrated into the MCF8329A1IREER?
The MCF8329A1IREER integrates supply UVLO on PVDD, VREG, GVDD, AVDD, and BSTx; thermal shutdown; overcurrent protection (OCP); three distinct motor lock detection methods; and fault reporting via nFAULT pin or optional I²C diagnostics. These features protect both the IC and external MOSFETs/motor without requiring additional discrete protection circuitry.
Can the MCF8329A1IREER drive 100% duty cycle high-side MOSFETs?
Yes - the MCF8329A1IREER includes a trickle charge pump that maintains BSTx voltage during extended high-side conduction, enabling true 100% duty cycle operation. This is critical for applications requiring maximum torque at zero speed or regenerative braking, and eliminates the need for external bootstrap refresh circuits or auxiliary supplies.
MCF8329A1IREER Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 36-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- -
- Driven Configuration:
- Half-Bridge
- Channel Type:
- 3-Phase
- Number of Drivers:
- 6
- Gate Type:
- N-Channel MOSFET
- Voltage - Supply:
- 4.5V ~ 60V
- Logic Voltage - VIL, VIH:
- 0.9V, 1.95V
- Current - Peak Output (Source, Sink):
- 1A, 2A
- Input Type:
- Non-Inverting
- High Side Voltage - Max (Bootstrap):
- 80 V
- Rise / Fall Time (Typ):
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 36-WQFN (5x4)
MCF8329A1IREER FAQ
1.How can I place an order for MCF8329A1IREER through Aetrix?
Please submit a Request for Quotation (RFQ) for MCF8329A1IREER 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 MCF8329A1IREER reliable?
The price and inventory of MCF8329A1IREER are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCF8329A1IREER is usually 5 days.
3.What payment methods are accepted for MCF8329A1IREER?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCF8329A1IREER transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCF8329A1IREER?
MCF8329A1IREER orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCF8329A1IREER 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 MCF8329A1IREER?
For technical support, including MCF8329A1IREER datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCF8329A1IREER requirements.
6.How does Aetrix verify that MCF8329A1IREER is sourced from the original manufacturer or authorized distributors?
All MCF8329A1IREER 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 MCF8329A1IREER meets industry standards.
7.What is the process for return or replacement of MCF8329A1IREER?
All MCF8329A1IREER units undergo pre-shipment inspection (PSI). If there is an issue with MCF8329A1IREER, 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 MCF8329A1IREER part is unused and in its original packaging.
Return procedure for MCF8329A1IREER:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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