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Toshiba Semiconductor and Storage TB67S141HG
- Part No.:
- TB67S141HG
- Manufacturer:
- Toshiba Semiconductor and Storage
- Category:
- Motor Drivers, Controllers
- Package:
- 25-SIP Formed Leads
- Datasheet:
-
TB67S141HG.pdf
- Description:
- IC MOTOR DRIVER UNIPOLAR 25HZIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,276
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Product details
Overview
TB67S141HG from Toshiba Electronic Devices & Storage Corporation is a phase-controlled PWM chopping-type 2-phase unipolar stepping motor driver IC fabricated in BiCD process. It supports VM up to 45 V, delivers peak output current of 3.0 A per channel, features 0.25 Ω (typ.) low-side MOSFET on-resistance, and enables full/half(a)/quarter-step resolution for precision motion control in industrial automation systems.
For engineers reviewing the TB67S141HG datasheet, TB67S141HG pinout, TB67S141HG application, or TB67S141HG equivalent, key selection considerations include its integrated brake/standby modes, thermal and overcurrent error detection with open-drain ALM/ERR outputs, adjustable fixed off-time via OSCM pin, and constant-current threshold setting via VREF voltage.
Technical Context
The TB67S141HG implements a dual-channel PWM-controlled constant-current architecture with independent phase and current setup logic (PHASEA/PHASEB, INA1–INB2) for unipolar stepper excitation. Its internal oscillator (fOSCM = 820–8200 kHz) governs fixed off-time PWM timing, while analog noise blanking (250–550 ns) ensures robust current sensing under switching transients.
It integrates protection functions including thermal shutdown (Tj = 140–170 °C), overcurrent detection (ISD = 3.1–5.0 A), and low-voltage lockout (VMR = 7.0–9.0 V), all signaled via dedicated open-drain outputs (ALM, ERR). The VCC regulator (4.75–5.25 V) powers internal logic independently of VM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VM Supply Range | 10–40 V (operating); 45 V absolute max - defines compatible motor bus voltage and heatsink requirements |
| Peak Output Current | 3.0 A per channel - sets maximum torque capability and PCB copper weight/trace width design |
| Output MOSFET RDS(on) | 0.25 Ω (typ.) - determines conduction loss and thermal rise at rated current |
| Step Resolution | Full / half(a) / quarter - enables 4× microstepping granularity without external indexer |
| VREF Control Range | 0–4.0 V - maps linearly to IOUT(max) = VREF × 0.75 A for precise current calibration |
| Fixed Off-Time Range | 5–40 μs - adjustable via OSCM pull-down resistor (3.9–39 kΩ) to optimize efficiency vs. torque ripple |
| Thermal Shutdown Threshold | 140–170 °C (junction) - triggers automatic output disable to prevent permanent damage |
| Logic Input Voltage | VIL ≤ 0.8 V, VIH ≥ 2.0 V - ensures compatibility with 3.3 V and 5 V microcontrollers |
Pinout & Package
Package: HZIP25-P-1.00F (25-pin heat sinked SIP, 1.00 mm pitch, exposed thermal pad).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VM (Pin 25) | Motor power supply input | High-current path (up to 3 A/channel); requires low-inductance decoupling and thermal relief |
| OUTA+/OUTA-/OUTB+/OUTB- (Pins 17,19,23,21) | Motor winding drive outputs | Four-terminal unipolar interface; each pair drives one coil with bidirectional current control |
| RSGNDA/RSGNDB (Pins 18,22) | Current sense ground references | Separate low-impedance return paths for accurate current feedback per channel |
| VREF (Pin 3) | Constant-current threshold set | Analog input scaling IOUT(max) = VREF × 0.75 A; 0 V disables current regulation |
| OSCM (Pin 4) | Fixed off-time oscillator control | Pull-down resistor sets PWM off-time (5–40 μs); critical for torque smoothness and thermal management |
| PHASEA/PHASEB (Pins 7,8) | Phase polarity control | Determines direction of current flow per coil during step transitions; enables full/half/quarter sequencing |
| INA1/INA2/INB1/INB2 (Pins 9,10,11,12) | Current magnitude control inputs | Binary-coded inputs selecting 0%, 38%, 71%, or 100% of VREF-set current per phase |
| BRAKE (Pin 14) | Brake mode enable | High forces 100% current in direction defined by PHASE; short-circuits motor windings for rapid stop |
| STBY (Pin 13) | Standby mode control | Low reduces quiescent current to <1 mA; resets ISD/TSD latches and halts all output activity |
| ERR (Pin 5) | Error detect output | Open-drain signal asserting low on TSD or ISD fault; requires external 10–100 kΩ pull-up |
| ALM (Pin 6) | Thermal alarm output | Auto-recovering open-drain signal (120 °C ±15 °C trip, 90 °C ±15 °C release) for predictive thermal management |
| VCC (Pin 2) | Internal regulator monitor | Supplies 4.75–5.25 V to logic; used to disable VREF regulation when shorted to VREF |
| GND (Pins 15,24) | Signal and power ground | Two dedicated pins minimize ground bounce; must be connected to single-point star ground on PCB |
| VCOM (Pin 20) | Common motor reference | Return node for unipolar motor center taps; tied to VM through external diode in some configurations |
Key Features
| Feature | Design Value |
|---|---|
| PWM constant-current drive | Enables stable torque across speed range by regulating peak coil current independent of back-EMF |
| Three-step resolution modes | Full/half(a)/quarter step selectable via logic inputs - eliminates need for external microstepping controller |
| Integrated brake function | Hardware-level winding short-circuit control (BRAKE pin) for immediate motor stopping without software intervention |
| Dual thermal monitoring | Separate ALM (warning) and TSD (shutdown) outputs allow staged thermal response and system-level fault handling |
| Low-power standby mode | Reduces ICC to <1 mA while preserving configuration state - ideal for battery-powered or energy-sensitive applications |
| Robust protection suite | Includes overcurrent (ISD), thermal shutdown (TSD), and undervoltage lockout (POR) with latch-reset via STBY or VM cycle |
Applications
| Industrial CNC Positioning | Medical Infusion Pump Actuation |
|---|---|
Use Scenario: Precision open-loop positioning of X/Y/Z axes in desktop CNC mills using 5 V logic and 24 V unipolar stepper motors. IC Role / Device Role / Timing Role: TB67S141HG serves as the direct motor driver, interpreting step/direction signals from MCU and executing current-regulated phase commutation. Use Value: Full/half/quarter step resolution enables sub-micron positioning accuracy; 0.25 Ω RDS(on) minimizes heat generation at 2 A continuous load. | Use Scenario: Controlled delivery of IV fluids via peristaltic pump driven by unipolar stepper, requiring fail-safe current limiting and thermal monitoring. IC Role / Device Role / Timing Role: TB67S141HG provides regulated current drive and real-time fault reporting (ERR/ALM) to MCU for closed-loop safety validation. Use Value: Integrated ISD (3.1–5.0 A) and TSD (140–170 °C) detection eliminate need for external current sensors or thermistors, reducing BOM count and board space. |
| Automated Laboratory Instrumentation | Print Head Carriage Control |
Use Scenario: Sample carousel indexing and reagent dispensing in benchtop analyzers, operating in ambient temperatures up to 55 °C. IC Role / Device Role / Timing Role: TB67S141HG acts as the stepper interface between ARM Cortex-M4 controller and 42 mm unipolar motor, managing acceleration profiles. Use Value: Adjustable fixed off-time (via OSCM) allows optimization for low-acoustic operation; ALM auto-recovery prevents spurious shutdowns during transient heating. | Use Scenario: Bidirectional movement of inkjet print head carriage across A4-width platen using compact unipolar stepper. IC Role / Device Role / Timing Role: TB67S141HG executes microstepped motion with synchronized brake activation at end stops to suppress mechanical ringing. Use Value: Hardware BRAKE pin enables immediate winding short-circuit without CPU involvement, reducing position overshoot by >30% versus software-only deceleration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unipolar stepper motor driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TB6600HG | Higher VM rating (50 V), higher peak current (4.5 A), but no ALM output or quarter-step mode | Suitable for higher-voltage/higher-torque systems where thermal warning is not required | Choose TB6600HG only if >40 V VM or >3 A current is needed; TB67S141HG offers finer resolution and predictive thermal signaling |
| LV8742TA | Lower VM max (36 V), integrated current DAC (no VREF resistor), but lacks brake mode and has fixed 1/8-step only | Better for space-constrained designs needing digital current control, but less flexible in motion profile tuning | Select LV8742TA when SPI-based current programming is preferred and brake functionality is unnecessary |
Compared with TB6600HG and LV8742TA, the TB67S141HG uniquely combines quarter-step resolution, hardware brake control, and dual-stage thermal monitoring (ALM + TSD) in a single HZIP25 package - enabling safer, quieter, and more precise unipolar stepper control without external components.
Availability
TB67S141HG is available at Aetrix Electronics and suitable for industrial CNC positioning, medical infusion pump actuation, automated laboratory instrumentation, and print head carriage control requiring stable component supply and long-term production continuity.
Supply support for TB67S141HG 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 is a Japanese semiconductor manufacturer specializing in power devices, motor drivers, and analog ICs for industrial and automotive applications.
The TB67S141HG belongs to Toshiba's BiCD-process stepper motor driver family, designed specifically for high-efficiency, thermally robust unipolar stepper control in space-constrained industrial equipment.
FAQ
What is the maximum motor supply voltage supported by the TB67S141HG?
The TB67S141HG supports a motor supply voltage (VM) up to 45 V as an absolute maximum rating, with recommended operating range of 10–40 V. Exceeding 45 V risks permanent device damage due to lack of internal overvoltage protection. For reliable long-term operation at 40 V, ensure adequate heatsinking and verify thermal performance under worst-case load conditions.
How does the VREF pin control output current in the TB67S141HG?
The TB67S141HG uses VREF to set peak output current via the formula IOUT(max) = VREF × 0.75 A. Applying 2.0 V to VREF yields 1.5 A peak current; 0 V disables current regulation entirely. VREF accepts 0–4.0 V, and must be decoupled with a 0.1 µF capacitor. Direct connection to VCC disables regulation and forces full-scale current.
Can the TB67S141HG drive bipolar stepper motors?
No, the TB67S141HG is explicitly designed for unipolar stepper motors only. Its output structure (four independent terminals per phase with common VCOM) and control logic (PHASE/INx inputs) are incompatible with bipolar H-bridge commutation. Attempting to drive a bipolar motor may result in incorrect phase sequencing, excessive heating, or device failure.
What is the purpose of the ALM and ERR pins on the TB67S141HG?
The ALM pin is an auto-recovering open-drain output that asserts low at 120 °C ±15 °C (thermal warning), releasing at ~90 °C; the ERR pin is a latched open-drain output that asserts low on thermal shutdown (TSD) or overcurrent (ISD) faults. Both require external 10–100 kΩ pull-up resistors to 3.3 V or 5 V and provide distinct fault severity levels for system-level response.
How do I configure quarter-step operation on the TB67S141HG?
Quarter-step mode is selected by applying specific logic combinations to INA1/INA2/INB1/INB2: e.g., INA1=H/INA2=L yields 38% current on Phase A, while INB1=H/INB2=H yields 100% on Phase B. PHASEA/PHASEB determine polarity. All four inputs must be driven synchronously with step timing; refer to Table 6.3 in the TB67S141HG datasheet for exact binary codes per microstep position.
TB67S141HG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Toshiba Semiconductor and Storage
- Series:
- -
- Package/Case:
- 25-SIP Formed Leads
- Packaging:
- Tray
- Product Status:
- Active
- Motor Type - Stepper:
- Unipolar
- Motor Type - AC, DC:
- -
- Function:
- Driver - Fully Integrated, Control and Power Stage
- Output Configuration:
- Half Bridge (2)
- Interface:
- Parallel
- Technology:
- Power MOSFET
- Step Resolution:
- 1, 1/2, 1/4
- Applications:
- General Purpose
- Current - Output:
- 3A
- Voltage - Supply:
- 4.75V ~ 5.25V
- Voltage - Load:
- 10V ~ 40V
- Operating Temperature:
- -20°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 25-HZIP
TB67S141HG FAQ
1.How can I place an order for TB67S141HG through Aetrix?
Please submit a Request for Quotation (RFQ) for TB67S141HG 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 TB67S141HG reliable?
The price and inventory of TB67S141HG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TB67S141HG is usually 5 days.
3.What payment methods are accepted for TB67S141HG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TB67S141HG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TB67S141HG?
TB67S141HG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TB67S141HG 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 TB67S141HG?
For technical support, including TB67S141HG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TB67S141HG requirements.
6.How does Aetrix verify that TB67S141HG is sourced from the original manufacturer or authorized distributors?
All TB67S141HG 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 TB67S141HG meets industry standards.
7.What is the process for return or replacement of TB67S141HG?
All TB67S141HG units undergo pre-shipment inspection (PSI). If there is an issue with TB67S141HG, 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 TB67S141HG part is unused and in its original packaging.
Return procedure for TB67S141HG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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