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Toshiba Semiconductor and Storage TB6633AFNG,EL
- Part No.:
- TB6633AFNG,EL
- Manufacturer:
- Toshiba Semiconductor and Storage
- Category:
- Motor Drivers, Controllers
- Package:
- 24-LSSOP (0.220", 5.60mm Width)
- Datasheet:
-
TB6633AFNG,EL.pdf
- Description:
- IC MOTOR DRIVER 5.5V-22V 24SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,934
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Product details
Overview
TB6633AFNG from Toshiba is a 3-phase full-wave PWM driver IC for sensorless brushless DC (BLDC) motors, integrating 7-bit ADC-based analog speed control, lead angle selection (0°/15°/30°), overlapping commutation (120°/135°/150°), and FG_OUT rotation feedback (1 pulse per electrical degree). It delivers 0.6 A typical output current with VM supply range of 4.5–22 V and supports forward/reverse rotation in compact HSOP-24 package.
For engineers reviewing the TB6633AFNG datasheet, TB6633AFNG pinout, TB6633AFNG application, or TB6633AFNG equivalent, key selection criteria include sensorless startup behavior, forced commutation timing control via FST/TIP/TRE pins, thermal shutdown (165°C), overcurrent protection (ISD), and compatibility with 4–22 V motor supplies in fan, pump, and small appliance motor drives.
Technical Context
The TB6633AFNG implements sensorless BLDC control using back-EMF detection to transition from DC excitation → forced commutation → closed-loop sensorless mode. Startup sequence is fully configurable: DC excitation time set by TIP capacitor (0.1 μF → ~0.1 s), forced commutation frequency selected via FST pin (1.6–6.4 Hz), and restart timeout determined by TRE capacitor (1 μF → ~1 s).
It integrates dual analog control paths: VSP sets PWM duty cycle (0–100%) for normal operation, while VST independently configures duty during DC excitation and forced commutation. Lead angle (LA), overlap (SEL_LAP), modulation scheme (SLOP), and brake (BRAKE) are all hardware-pin configurable with internal pull-down resistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 0.6 A typ. (1 A max); sufficient for small fans, pumps, and appliance motors up to ~15 W |
| Motor Supply Range | VM = 4.5–22 V; supports 5 V logic-compatible systems and 12–24 V industrial motors |
| PWM Frequency | 20 kHz (FPWM = L) or 40 kHz (FPWM = H); selectable for EMI/noise trade-off |
| FG_OUT Resolution | 1 pulse per electrical degree; enables precise speed monitoring (e.g., 2 pulses/rev for 4-pole motor) |
| Startup Control | VSP > 1.0 V initiates startup; VST sets duty during DC excitation and forced commutation phases |
| Protection Features | Overcurrent (ISD), thermal shutdown (TSD @ 165°C), undervoltage lockout (LVD @ 3.5 V), short-brake control |
| Oscillator | Internal 5.1 MHz typ. (OSC_R = 20 kΩ, OSC_C = 68 pF); determines forced commutation and max frequency limits |
Pinout & Package
Package: HSOP-24 (Heat Sink Out Package), 1.0 mm pitch, exposed thermal pad, 0.136 g typical weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| U/V/W | 3-phase motor outputs | High-side/low-side half-bridge outputs driving BLDC windings; RON = 0.4–0.75 Ω |
| COM | Motor center-tap connection | Required for sensorless back-EMF detection; connects to star-point of wye-wound motor |
| VSP | Analog speed control input | 7-bit ADC input (0–4 V range); sets PWM duty cycle in sensorless mode |
| VST | Duty control for startup modes | Configures PWM duty during DC excitation and forced commutation (independent of VSP) |
| FST / TIP / TRE | Startup timing control inputs | FST selects forced commutation frequency; TIP sets DC excitation time; TRE sets restart timeout |
| LA / SEL_LAP / SLOP | Commutation configuration pins | LA = lead angle (0°/15°/30°); SEL_LAP = overlap (120°/135°/150°); SLOP = modulation enable |
| FG_OUT | Speed feedback output | Open-drain signal generating 1 pulse per electrical degree; used for RPM monitoring and closed-loop tuning |
| IR | Current sense resistor connection | Connects external shunt for overcurrent detection; sensitive to ESD (pin 8 requires handling care) |
Key Features
| Feature | Design Value |
|---|---|
| Sensorless startup sequence | Automated three-stage transition: DC excitation → forced commutation → back-EMF synchronized sensorless mode |
| Configurable commutation | Hardware-selectable lead angle (0°/15°/30°) and overlapping conduction (120°/135°/150°) for torque ripple optimization |
| Independent analog control paths | VSP controls running speed; VST independently sets startup duty-enabling robust start under load |
| Restart recovery on fault | Automatic cycling into DC excitation → forced commutation after abnormality (lock, stall, TSD, ISD) with user-defined TRE timeout |
| Integrated oscillator & timing | On-chip 5.1 MHz oscillator eliminates external crystal; timing constants derived from OSC_R/OSC_C and TIP/TRE capacitors |
Applications
| Computer Cooling Fan | Small Appliance Motor |
|---|---|
Use Scenario: Variable-speed 12 V DC cooling fan in desktop PCs or NAS enclosures requiring quiet operation and thermal-responsive speed control. IC Role / Device Role / Timing Role: TB6633AFNG acts as sensorless BLDC driver, accepting PWM or analog voltage from system controller and generating 3-phase gate signals with FG_OUT tach feedback. Use Value: Eliminates Hall sensors and reduces BOM cost; 1-pulse-per-electrical-degree FG_OUT enables accurate RPM reporting to host MCU without additional decoding logic. | Use Scenario: Brushless motor drive in cordless vacuum cleaners or robotic floor sweepers where compact size, low EMI, and reliable startup under variable load are critical. IC Role / Device Role / Timing Role: TB6633AFNG provides full motor control including direction (CW_CCW), braking (BRAKE), and adaptive startup (TIP/FST/TRE) for rapid response to battery voltage sag. Use Value: Configurable forced commutation frequency and restart timeout ensure consistent startup across battery SOC; thermal shutdown prevents damage during sustained high-load operation. |
| Industrial Pump Driver | Medical Ventilation Blower |
Use Scenario: Low-noise, maintenance-free 24 V BLDC pump in HVAC or fluid handling systems requiring stable flow rate control and fault logging. IC Role / Device Role / Timing Role: TB6633AFNG serves as integrated motor controller with OC input for external current sensing, FG_OUT for flow-rate correlation, and LVD/TSD for system-level safety interlocks. Use Value: Overcurrent detection (OC ≥ 0.25 V) halts all outputs instantly; undervoltage lockout prevents erratic behavior during brownouts-critical for continuous-duty applications. | Use Scenario: Precision airflow control in portable ventilators where motor reliability, low acoustic noise, and fail-safe shutdown are mandatory. IC Role / Device Role / Timing Role: TB6633AFNG executes sensorless commutation with adjustable lead angle (LA) to minimize torque ripple and audible vibration; BRAKE pin enables immediate stop during emergency events. Use Value: Thermal shutdown (165°C) and short-brake functionality meet IEC 60601-1 safety requirements; FG_OUT signal supports real-time RPM verification for closed-loop pressure control algorithms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 3-phase sensorless BLDC driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STSPIN32F0A | Integrated 32-bit ARM Cortex-M0 MCU + gate drivers; requires firmware development; no analog VSP input | Best for designs needing field-oriented control (FOC), custom diagnostics, or multi-motor coordination | Choose STSPIN32F0A when software-defined control, current sensing, or advanced commutation algorithms are required-TB6633AFNG is preferred for analog simplicity and minimal MCU overhead. |
| MP6532GQ-Z | Pin-compatible HSOP-24; same 0.6 A rating and 4.5–22 V VM range; lacks FG_OUT and adjustable lead angle | Suitable for cost-sensitive, lower-complexity BLDC drives where tach feedback and fine-tuned commutation are not needed | MP6532GQ-Z offers drop-in replacement for basic sensorless operation but omits TB6633AFNG's FG_OUT, LA, and SEL_LAP configurability-retain TB6633AFNG when speed monitoring or torque optimization is essential. |
Compared with STSPIN32F0A and MP6532GQ-Z, the TB6633AFNG uniquely combines analog speed control (VSP), hardware-configurable commutation parameters (LA/SEL_LAP), and dedicated FG_OUT tach output in a single IC-making it optimal for fixed-function, low-software-overhead BLDC systems requiring precise RPM feedback and startup robustness.
Availability
TB6633AFNG is available at Aetrix Electronics and suitable for computer cooling fans, small appliance motors, and industrial pump drivers requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for TB6633AFNG 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
Toshiba Electronic Devices & Storage Corporation designs high-reliability power semiconductors and motor drivers for industrial, consumer, and automotive applications.
The TB6633AFNG belongs to Toshiba's Bi-CD motor driver family, engineered specifically for cost-effective, sensorless BLDC control in space-constrained, thermally demanding applications like cooling modules and portable appliances.
FAQ
What is the function of the IR pin on the TB6633AFNG?
The IR pin on the TB6633AFNG connects to an external shunt resistor for overcurrent detection. When voltage across the shunt exceeds 0.25 V (typ.), the IC disables all PWM outputs. This pin is electrostatic-sensitive-handling requires ESD precautions. The TB6633AFNG uses this signal to trigger ISD protection, ensuring safe shutdown before damage occurs during motor stall or short-circuit events.
How does the TB6633AFNG achieve sensorless commutation without Hall sensors?
The TB6633AFNG detects rotor position by monitoring back-EMF zero-crossing on the U/V/W phases during rotation. After initial DC excitation and forced commutation startup, it transitions to sensorless mode when valid back-EMF signals are recognized. The COM pin must be connected to the motor's center tap (wye configuration) to enable this detection. The TB6633AFNG then synchronizes PWM switching to back-EMF polarity changes, eliminating need for external position sensors.
What is the difference between TB6633AFNG and TB6633FNG regarding FG_OUT output?
The TB6633AFNG generates 1 pulse per electrical degree on FG_OUT, whereas the TB6633FNG outputs 3 pulses per electrical degree. This means for a 4-pole motor, TB6633AFNG produces 2 pulses per mechanical revolution, while TB6633FNG produces 6. The lower resolution of TB6633AFNG simplifies tachometer decoding in resource-constrained MCUs but provides adequate speed feedback for most fan and pump applications.
Can the TB6633AFNG drive a delta-connected BLDC motor?
No-the TB6633AFNG requires a wye (star)-connected BLDC motor with accessible center tap (COM) for back-EMF sensing. Delta configurations lack a common node for COM connection, preventing proper sensorless operation. Attempting to use a delta motor will result in failed startup or unstable commutation. The TB6633AFNG datasheet explicitly specifies COM pin usage for position detection, confirming wye topology as mandatory.
What are the recommended capacitor values for TIP and TRE pins on the TB6633AFNG?
Toshiba recommends 0.1 μF for TIP (DC excitation time ≈ 0.1 s) and 1 μF for TRE (restart timeout ≈ 1 s), both rated for ≥10 V with low leakage. These values assume typical charge current (3 μA) and detection voltage (3 V). Deviations alter timing linearly-e.g., doubling TIP capacitance doubles DC excitation duration. The TB6633AFNG startup behavior must be validated empirically with the target motor due to load-dependent torque requirements.
TB6633AFNG,EL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Toshiba Semiconductor and Storage
- Series:
- -
- Package/Case:
- 24-LSSOP (0.220", 5.60mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Motor Type - Stepper:
- -
- Motor Type - AC, DC:
- Brushless DC (BLDC)
- Function:
- Driver - Fully Integrated, Control and Power Stage
- Output Configuration:
- Half Bridge (3)
- Interface:
- Analog
- Technology:
- Power MOSFET
- Step Resolution:
- -
- Applications:
- General Purpose
- Current - Output:
- 1A
- Voltage - Supply:
- 5.5V ~ 22V
- Voltage - Load:
- 5.5V ~ 22V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-SSOP
TB6633AFNG,EL FAQ
1.How can I place an order for TB6633AFNG,EL through Aetrix?
Please submit a Request for Quotation (RFQ) for TB6633AFNG,EL 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 TB6633AFNG,EL reliable?
The price and inventory of TB6633AFNG,EL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TB6633AFNG,EL is usually 5 days.
3.What payment methods are accepted for TB6633AFNG,EL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TB6633AFNG,EL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TB6633AFNG,EL?
TB6633AFNG,EL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TB6633AFNG,EL 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 TB6633AFNG,EL?
For technical support, including TB6633AFNG,EL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TB6633AFNG,EL requirements.
6.How does Aetrix verify that TB6633AFNG,EL is sourced from the original manufacturer or authorized distributors?
All TB6633AFNG,EL 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 TB6633AFNG,EL meets industry standards.
7.What is the process for return or replacement of TB6633AFNG,EL?
All TB6633AFNG,EL units undergo pre-shipment inspection (PSI). If there is an issue with TB6633AFNG,EL, 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 TB6633AFNG,EL part is unused and in its original packaging.
Return procedure for TB6633AFNG,EL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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