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Toshiba Semiconductor and Storage TB62261FTG,EL
- Part No.:
- TB62261FTG,EL
- Manufacturer:
- Toshiba Semiconductor and Storage
- Category:
- Motor Drivers, Controllers
- Package:
- 48-WFQFN Exposed Pad
- Datasheet:
-
TB62261FTG,EL.pdf
- Description:
- IC MOTOR DRIVER BIPOLAR 48WQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,236
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Product details
Overview
TB62261FTG from Toshiba Electronic Devices & Storage Corporation is a two-phase bipolar stepping motor driver IC using PWM chopper control with PHASE-in interface logic, rated for 40 V motor supply and 1.8 A peak output current per channel, designed for precision motion control in industrial automation and CNC positioning systems.
For engineers reviewing the TB62261FTG datasheet, TB62261FTG pinout, TB62261FTG application, or TB62261FTG equivalent, this page delivers verified technical context, exact pin functions, real-world step resolution behavior (full/half/quarter), thermal shutdown and overcurrent protection implementation details, and validated alternative drivers for motor control redesigns.
Technical Context
The TB62261FTG integrates dual H-bridge predrivers with internal current-sense amplifiers, mixed-decay PWM control logic, and oscillator-based chopping frequency tuning via external R/C on OSCM. It supports three microstepping modes through discrete PHASEA/PHASEB and excitation inputs (INA1/INA2/INB1/INB2).
Its BiCD process enables low on-resistance (0.8 Ω typ. high-side + low-side), built-in TSD (145–175 °C) and ISD (2.1–4.0 A) protection, VCC regulator (4.75–5.25 V), and analog noise blanking (450–950 ns) to suppress false triggering during switching transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Motor Supply Voltage | 10–38 V - Enables direct use with 12 V/24 V industrial power rails without external regulation. |
| Peak Output Current | 1.8 A - Sustained per phase under thermal limits; actual usable current depends on board layout and heatsinking. |
| Output On-Resistance | 0.8 Ω (typ.) - Minimizes conduction loss and self-heating at rated load, critical for continuous duty operation. |
| Chopping Frequency Range | 40–150 kHz - Adjustable via OSCM pin; 70–100 kHz recommended to balance current ripple and MOSFET switching loss. |
| Logic Input Thresholds | VIN(H) ≥ 2.0 V, VIN(L) ≤ 0.8 V - Compatible with standard 3.3 V and 5 V microcontroller GPIOs without level-shifting. |
| Thermal Shutdown Threshold | 145–175 °C - Hysteresis prevents oscillation; device enters standby until VM reset or STANDBY reasserted. |
| Overcurrent Detection | 2.1–4.0 A - Triggers immediate output disable; requires external fuse for fail-safe short-circuit handling. |
Pinout & Package
P-WQFN48-0707-0.50-003 package: 7 mm × 7 mm, 0.5 mm pitch, exposed thermal pad (must be connected to PCB GND plane for thermal and electrical integrity).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUTA+, OUTA− (Pins 10,11,16,17) | Motor Phase A H-bridge outputs | Dual parallel pins per terminal reduce trace inductance and resistive drop; must be shorted externally per channel. |
| OUTB+, OUTB− (Pins 20,21,26,27) | Motor Phase B H-bridge outputs | Identical parallel configuration to Phase A; enables full 1.8 A drive capability per winding with low impedance path. |
| RSA, RSB (Pins 7,8,29,30) | Current sense inputs | Connect to low-side shunt resistors; internal amplifiers measure voltage drop to regulate IOUT via PWM. |
| VREFA, VREFB (Pins 42,41) | Reference voltage inputs | Set peak current per phase: IOUT(max) = VREF / (5.0 × RSENSE); supports independent tuning of Phase A/B torque. |
| PHASEA, PHASEB (Pins 46,47) | Direction control inputs | Define current polarity per phase; combined with INA/INB signals to select full/half/quarter step sequence and rotation direction. |
| INA1, INA2, INB1, INB2 (Pins 44,45,2,3) | Excitation control inputs | Four-bit pattern selects step mode and coil energization state; must be held LOW until VM stabilizes to prevent latch-up. |
| STANDBY (Pin 4) | Low-power mode enable | Drives internal oscillator and output stages into sleep; reduces quiescent current from 7 mA to 3.5 mA when motor idle. |
| OSCM (Pin 43) | Oscillator frequency set | RC network (e.g., 3.6 kΩ + 270 pF) sets fOSCM; fchop = fOSCM/16 determines PWM timing resolution and current ripple. |
Key Features
| Feature | Design Value |
|---|---|
| Full/half/quarter step resolution | Hardware-selectable via PHASE/INA/INB logic; enables smooth motion and high positional accuracy without external controller interpolation. |
| Mixed-decay PWM control | Automatically blends slow/fast decay to minimize current distortion at zero-crossing, reducing torque ripple and audible noise. |
| Built-in error detection | Simultaneous TSD and ISD flags output on dedicated pins; allows host MCU to log faults and initiate safe shutdown sequences. |
| Integrated VCC regulator | Generates stable 5.0 V ±2.5% from VM rail; powers internal logic and eliminates need for external LDO in space-constrained designs. |
| Low on-resistance output stage | 0.8 Ω total (HS+LS) minimizes I²R losses at 1.8 A, enabling >85% efficiency at 24 V with proper PCB copper area. |
Applications
| Industrial CNC Positioning | Medical Infusion Pumps |
|---|---|
Use Scenario: Precise linear actuation of X/Y/Z axes in desktop CNC mills using NEMA 17 stepper motors. IC Role / Device Role / Timing Role: Two-phase bipolar driver executing microstepped motion commands from ARM-based motion controller via PHASE/INA/INB interface. Use Value: 0.001° angular resolution at quarter-step mode, with <1% current mismatch between phases ensuring consistent torque across speed range. | Use Scenario: Controlled syringe advancement in battery-powered portable infusion devices requiring silent, vibration-free delivery. IC Role / Device Role / Timing Role: Low-noise stepper driver managing motor acceleration/deceleration profiles while monitoring back-EMF during occlusion events. Use Value: Mixed-decay mode suppresses mechanical resonance; ISD detection triggers immediate stop on tube blockage, meeting IEC 60601-1 safety requirements. |
| Automated Test Equipment (ATE) | 3D Printer Extruder Control |
Use Scenario: High-speed indexing of probe cards in semiconductor wafer testers where repeatability and thermal stability are critical. IC Role / Device Role / Timing Role: Dual-channel driver synchronized to system clock; STANDBY pin used for rapid power gating between test cycles. Use Value: 70 kHz chopping frequency balances low current ripple (<50 mA pk-pk) with minimal gate loss, maintaining junction temperature <105°C at 1.4 A continuous. | Use Scenario: Filament feed control in compact FDM printers where board space and thermal dissipation are constrained. IC Role / Device Role / Timing Role: Integrated driver replacing discrete H-bridge + current sense + controller; OSCM pin tuned for 85 kHz to reduce stepper whine. Use Value: P-WQFN48 package with exposed pad achieves 2.5× better thermal resistance vs. SOIC, allowing full 1.8 A drive on 2-layer PCBs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bipolar stepper motor driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STSPIN220TR | Lower voltage rating (45 V), integrated current sense, no external OSCM tuning; 1.3 A max output. | Targeted at compact consumer devices; lacks separate VREF pins for independent phase tuning. | Choose when board area is critical and torque matching between phases is less stringent. |
| MP6500GQZ | Higher current (2.5 A), integrated indexer, SPI interface; requires external current sense resistors only. | Designed for systems needing embedded step/direction translation; adds firmware overhead but simplifies host GPIO usage. | Prefer when migrating from pulse/direction controllers and seeking reduced MCU resource load. |
Compared with STSPIN220TR and MP6500GQZ, the TB62261FTG offers unique flexibility in independent phase current tuning via dual VREF pins, precise external chopping frequency control, and robust 1.8 A drive in a thermally optimized QFN package-making it optimal for industrial motion systems demanding deterministic microstepping and thermal resilience.
Availability
TB62261FTG is available at Aetrix Electronics and suitable for industrial CNC positioning, medical infusion pumps, automated test equipment, and 3D printer extruder control requiring stable component supply and long-term production continuity.
Supply support for TB62261FTG 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 analog and power ICs for industrial, automotive, and computing applications, with emphasis on thermal robustness and functional safety.
The TB62261FTG belongs to Toshiba's BiCD motor driver product line, engineered specifically for high-efficiency, low-noise bipolar stepper control in space- and thermally constrained embedded motion systems.
FAQ
What is the maximum continuous output current supported by the TB62261FTG under typical PCB conditions?
The TB62261FTG specifies 1.8 A peak output current per phase, but continuous current is thermally limited. With a 4-layer PCB (100 mm × 110 mm, 1.6 mm thick), the practical continuous current is ~1.4 A at 85°C ambient. Derating is required above 25°C at 10.4 mW/°C; exceeding 1.4 A continuously without enhanced heatsinking risks triggering thermal shutdown. The TB62261FTG datasheet confirms this limit in Operation Ranges (IOUT = 1.4 A typ. at Ta = 85°C).
How does the TB62261FTG implement microstepping, and what input signals control step resolution?
The TB62261FTG implements full, half, and quarter step resolution using PHASEA/PHASEB direction inputs combined with four excitation control bits (INA1/INA2/INB1/INB2). These inputs define current magnitude and polarity per phase according to predefined tables in the datasheet. No external indexer or clock is needed-the TB62261FTG decodes logic states internally. The TB62261FTG supports all three modes simultaneously; resolution is selected solely by the applied digital pattern.
Can the TB62261FTG operate with a 3.3 V logic supply, and what are the voltage thresholds for its input pins?
Yes, the TB62261FTG accepts 3.3 V logic levels directly. Its input thresholds are VIN(H) ≥ 2.0 V (min) and VIN(L) ≤ 0.8 V (max), with 100–300 mV hysteresis. This ensures reliable recognition of 3.3 V GPIO outputs from modern MCUs without level shifters. The TB62261FTG also supports 5 V logic, making it compatible with both legacy and contemporary controllers.
What protection features are built into the TB62261FTG, and how do they respond to fault conditions?
The TB62261FTG integrates thermal shutdown (TSD), overcurrent shutdown (ISD), and power-on reset (POR). TSD triggers at 145–175°C, disabling outputs and forcing standby mode until VM is cycled. ISD activates at 2.1–4.0 A, latching off outputs until POR or STANDBY assertion. Both generate active-low fault flags. The TB62261FTG documentation emphasizes these are backup protections-external fusing and layout best practices remain mandatory for system-level safety.
Is the TB62261FTG pin-compatible with other Toshiba stepper drivers like the TB6600 series?
No, the TB62261FTG is not pin-compatible with the TB6600 series. It uses a 48-pin WQFN package with unique pin assignments-including dual parallel outputs (e.g., OUTA+ on Pins 10 & 11), dedicated VREF pins (41, 42), and OSCM frequency tuning (Pin 43)-that differ fundamentally from TB6600's 28-pin HTSSOP layout and interface architecture. Migration requires PCB redesign and firmware adaptation. The TB62261FTG datasheet provides no cross-reference to TB6600 pin mapping.
TB62261FTG,EL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Toshiba Semiconductor and Storage
- Series:
- -
- Package/Case:
- 48-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Motor Type - Stepper:
- Bipolar
- Motor Type - AC, DC:
- Brushed DC
- Function:
- Driver - Fully Integrated, Control and Power Stage
- Output Configuration:
- Half Bridge (4)
- Interface:
- Parallel
- Technology:
- Power MOSFET
- Step Resolution:
- 1, 1/2, 1/4
- Applications:
- Appliance
- Current - Output:
- 1.4A
- Voltage - Supply:
- 4.75V ~ 5.25V
- Voltage - Load:
- 10V ~ 38V
- Operating Temperature:
- -20°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-WQFN (7x7)
TB62261FTG,EL FAQ
1.How can I place an order for TB62261FTG,EL through Aetrix?
Please submit a Request for Quotation (RFQ) for TB62261FTG,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 TB62261FTG,EL reliable?
The price and inventory of TB62261FTG,EL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TB62261FTG,EL is usually 5 days.
3.What payment methods are accepted for TB62261FTG,EL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TB62261FTG,EL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TB62261FTG,EL?
TB62261FTG,EL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TB62261FTG,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 TB62261FTG,EL?
For technical support, including TB62261FTG,EL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TB62261FTG,EL requirements.
6.How does Aetrix verify that TB62261FTG,EL is sourced from the original manufacturer or authorized distributors?
All TB62261FTG,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 TB62261FTG,EL meets industry standards.
7.What is the process for return or replacement of TB62261FTG,EL?
All TB62261FTG,EL units undergo pre-shipment inspection (PSI). If there is an issue with TB62261FTG,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 TB62261FTG,EL part is unused and in its original packaging.
Return procedure for TB62261FTG,EL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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