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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Motor Drivers, Controllers

Toshiba Semiconductor and Storage TB67S285FTG,EL

Name: TB67S285FTG,EL
Brand: Toshiba Semiconductor and Storage
SKU: TB67S285FTG,EL
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TB67S285FTG,EL

Manufacturer:: Toshiba Semiconductor and Storage

Category:: Motor Drivers, Controllers

Package:: 48-VFQFN Exposed Pad

Datasheet:: TB67S285FTG,EL.pdf

Description:: IC MOTOR DRIVER BIPOLAR 48VQFN

Quantity:: RFQ Add To RFQ list

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Product details

Overview

TB67S285FTG from Toshiba Electronic Devices & Storage Corporation is an active gain control (AGC), serial-interface bipolar stepping motor driver IC rated for 50 V motor supply and 3.0 A output current, featuring sense-resistor-less current detection (ACDS), 4-bit torque adjustment, and integrated thermal/overcurrent/open-load error detection. It targets precision motion control in compact industrial automation modules.

For engineers reviewing the TB67S285FTG datasheet, TB67S285FTG pinout, TB67S285FTG application, or TB67S285FTG equivalent, key selection considerations include its QFN48 package with thermal pad, AGC anti-stall architecture, adjustable PWM chopping frequency via OSCM pin, 16-step torque control, and dual open-drain error flag outputs (LO1/LO2) with configurable detection thresholds.

Technical Context

The TB67S285FTG implements Advanced Dynamic Mixed Decay (ADMD) current control using internal MOSFETs with 0.4 Ω typical R_DS(on), enabling precise constant-current PWM without external sense resistors. Its AGC architecture dynamically reduces current threshold during stall conditions while maintaining bottom limit via CLIM pins.

Control is delivered via a 3-wire serial interface (DATA/CLOCK/LATCH) with cascading support through DOUT/COUT/LOUT pins. Internal oscillator frequency (f_OSCM) sets chopping frequency (f_chop = f_OSCM/16), adjustable from 50 kHz to 70 kHz using external ROSC/COSC components or fixed at ~57 kHz with internal mode.

Key Specifications

Parameter	Value and Actual Design Meaning
Motor Supply Voltage	10 V to 47 V - Enables direct connection to common industrial DC bus rails without intermediate regulation.
Output Current Rating	3.0 A - Maximum continuous phase current per H-bridge channel, supporting NEMA 17–23 stepper motors.
R_DS(on) (HS + LS)	0.4 Ω (typ.) - Low conduction loss improves thermal efficiency and reduces heatsink requirements in sealed enclosures.
Current Control Method	ACDS (sense-resistor-less) - Eliminates external shunt resistors, reducing BOM count and PCB area while maintaining ±10% current accuracy.
AGC Architecture	Active Gain Control with FLIM/LTH/BOOST/CLIM configuration - Dynamically suppresses resonance and prevents stall under variable load without firmware intervention.
Torque Resolution	4-bit (16 steps) - Allows fine-grained microstepping current scaling from 0% to 100% in 5%–10% increments for vibration-sensitive positioning.
Error Detection	TSD, ISD, OPD, POR - Integrated protection flags reported on LO1/LO2 pins; no external monitoring circuitry required.
Package	QFN48 (7.0 mm × 7.0 mm) with exposed thermal pad - Supports >2.5 W power dissipation when soldered to 4-layer PCB with 4× thermal vias.

Pinout & Package

Package: P-VQFN48-0707-0.50-004 - 48-pin quad flat no-lead with 0.5 mm pitch and exposed thermal pad on underside. Requires soldering of corner pads and rear thermal pad directly to GND plane for thermal and electrical integrity.

Pin/Terminal	Circuit Role	Design Meaning
OUTA+/OUTA-/OUTB+/OUTB-	H-bridge motor phase outputs	Drive bipolar stepper coils in full/half-step modes; each pair supports bidirectional 3.0 A current with fast decay control.
VMA/VMB	Motor power inputs	Dual VM supply pins reduce trace inductance and improve current sharing across high-side/low-side MOSFETs.
RSAGND/RSBGND	Motor ground return paths	Separate ground returns for A/B channels minimize crosstalk and enable independent current sensing via ACDS.
VREFA/VREFB	Current reference inputs	Analog voltage inputs (GND–3.6 V) setting base current threshold; scaled by TRQ bits for 16-step torque control.
DATA/CLOCK/LATCH	Serial command interface	3-wire SPI-compatible input controlling PHASE/ENABLE/TRQ registers; supports daisy-chaining via DOUT/COUT/LOUT.
LO1/LO2	Open-drain error flags	Simultaneous reporting of TSD (both low), ISD (LO1 low), OPD (LO2 low); require 10–100 kΩ pull-up to VCC.
AGC0/AGC1/CLIM0/CLIM1/BOOST/FLIM/LTH	AGC configuration pins	Multi-state logic inputs (VCC/GND/pull-up/pull-down) configuring anti-stall behavior, bottom current limit, boost step count, and frequency activation window.
OSCM	Oscillator frequency control	Configures f_OSCM (0.64–2.4 MHz) to set f_chop; internal fixed mode (~57 kHz) enabled by shorting to GND.

Key Features

Feature	Design Value
Active Gain Control (AGC)	Prevents motor stall under sudden load increase by dynamically lowering current threshold while enforcing configurable bottom limit (CLIM) and boost recovery profile.
Advanced Current Detection System (ACDS)	Replaces external sense resistors with internal current mirror and comparator, reducing component count and improving noise immunity in high-dI/dt environments.
ADMD Constant Current Control	Intelligently sequences Charge → Fast Decay → Slow Decay within each chopping cycle to minimize current ripple (<15%) and audible noise.
Serial Cascade Capability	DOUT/COUT/LOUT outputs allow up to 8 drivers to share one microcontroller SPI port, simplifying multi-axis motion controller PCB layout.
Integrated 5 V Regulator	Derives logic supply (VCC) from VM rail, eliminating need for separate 5 V LDO and enabling single-rail system design.
Thermal Protection	Thermal shutdown (TSD) triggers at T_j ≥ 150°C and releases only after VM power cycle or STANDBY deassertion - prevents latch-up in enclosed housings.

Applications

Industrial CNC Positioning Stage	Medical Infusion Pump Drive
Use Scenario: Closed-loop X-Y stage moving optical sensors with sub-10 µm repeatability under varying payload inertia. IC Role / Device Role / Timing Role: Bipolar stepper driver executing full/half-step commands via serial interface; AGC suppresses resonance during rapid acceleration/deceleration. Use Value: Eliminates external current sense resistors and reduces position error by 40% vs. fixed-threshold drivers due to dynamic current adaptation.	Use Scenario: Precision syringe actuation delivering 0.1 mL/hr–100 mL/hr with <±2% flow accuracy over 72-hour operation. IC Role / Device Role / Timing Role: Motor driver implementing microstepping with 16-level torque control to minimize vibration-induced fluid pulsation. Use Value: ACDS current detection ensures consistent per-step torque despite battery voltage sag; LO1/LO2 provide real-time stall detection for safety-critical fault logging.
Automated Test Equipment (ATE) Handler	3D Printer Extruder Motion Control
Use Scenario: High-speed pick-and-place arm indexing IC trays with 0.5 s cycle time and <±0.05 mm placement tolerance. IC Role / Device Role / Timing Role: Serial-controlled stepper driver managing acceleration profiles; OSCM-adjustable chopping frequency minimizes EMI during RF-sensitive test phases. Use Value: 50–70 kHz f_chop range avoids interference with 2.4 GHz Wi-Fi bands used for test data streaming; STANDBY pin enables zero-power idle state between cycles.	Use Scenario: Dual extruder system requiring synchronized movement with adaptive torque during filament jam detection. IC Role / Device Role / Timing Role: Stepper driver with OPD detection flagging open-circuit heater cartridge failure; AGC maintains extrusion pressure during partial nozzle blockage. Use Value: Built-in motor load open (OPD) detection eliminates need for external continuity check circuitry; CLIM configuration sustains minimum extrusion force during recovery.

Industrial CNC Positioning Stage

Medical Infusion Pump Drive

Use Scenario: Closed-loop X-Y stage moving optical sensors with sub-10 µm repeatability under varying payload inertia.

IC Role / Device Role / Timing Role: Bipolar stepper driver executing full/half-step commands via serial interface; AGC suppresses resonance during rapid acceleration/deceleration.

Use Value: Eliminates external current sense resistors and reduces position error by 40% vs. fixed-threshold drivers due to dynamic current adaptation.

Use Scenario: Precision syringe actuation delivering 0.1 mL/hr–100 mL/hr with <±2% flow accuracy over 72-hour operation.

IC Role / Device Role / Timing Role: Motor driver implementing microstepping with 16-level torque control to minimize vibration-induced fluid pulsation.

Use Value: ACDS current detection ensures consistent per-step torque despite battery voltage sag; LO1/LO2 provide real-time stall detection for safety-critical fault logging.

Automated Test Equipment (ATE) Handler

3D Printer Extruder Motion Control

Use Scenario: High-speed pick-and-place arm indexing IC trays with 0.5 s cycle time and <±0.05 mm placement tolerance.

IC Role / Device Role / Timing Role: Serial-controlled stepper driver managing acceleration profiles; OSCM-adjustable chopping frequency minimizes EMI during RF-sensitive test phases.

Use Value: 50–70 kHz f_chop range avoids interference with 2.4 GHz Wi-Fi bands used for test data streaming; STANDBY pin enables zero-power idle state between cycles.

Use Scenario: Dual extruder system requiring synchronized movement with adaptive torque during filament jam detection.

IC Role / Device Role / Timing Role: Stepper driver with OPD detection flagging open-circuit heater cartridge failure; AGC maintains extrusion pressure during partial nozzle blockage.

Use Value: Built-in motor load open (OPD) detection eliminates need for external continuity check circuitry; CLIM configuration sustains minimum extrusion force during recovery.

Equivalent & Alternatives

The following parts are listed as comparable options for similar bipolar stepping motor driver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STSPIN820	8–45 V VM range, 1.5 A max current, integrated current sense but requires external sense resistor; no AGC or ACDS.	Lacks anti-stall functionality and sense-resistor-less operation; suited for cost-sensitive, lower-current applications where stall risk is low.	Select STSPIN820 only if motor current ≤1.5 A and system firmware can implement stall detection via back-EMF monitoring.
MP6500	4.5–35 V VM, 2.5 A, 1/8–1/32 microstepping, integrated current sense with external resistor; no AGC or serial cascade.	Offers finer microstepping but lacks serial daisy-chain capability and dynamic current adaptation; requires more GPIOs for control.	Choose MP6500 when microstepping resolution >16 steps is mandatory and multi-driver synchronization is handled externally.

Compared with STSPIN820 and MP6500, the TB67S285FTG uniquely combines 3.0 A drive capability, AGC anti-stall, ACDS sense-resistor-less control, and 3-wire serial cascade in a thermally optimized QFN48 package-making it optimal for space-constrained, high-reliability multi-axis systems where stall prevention and BOM reduction are critical.

Availability

TB67S285FTG is available at Aetrix Electronics and suitable for industrial CNC positioning stages, medical infusion pump drives, automated test equipment handlers, and 3D printer extruder motion control requiring stable component supply and long-term production continuity.

Supply support for TB67S285FTG 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 consumer applications, with emphasis on thermal robustness and integration density.

The TB67S285FTG belongs to Toshiba's BiCD-process stepping motor driver family, engineered specifically for compact, high-current motion control systems needing integrated protection, minimal external components, and adaptive torque response.

FAQ

What is the maximum motor supply voltage supported by the TB67S285FTG?

The TB67S285FTG supports a motor supply voltage (VM) range of 10 V to 47 V, with an absolute maximum rating of 50 V. Operation above 47 V risks exceeding safe operating area limits and triggering thermal shutdown. The TB67S285FTG is not rated for 48 V nominal industrial rails without derating or additional input filtering.

How does the TB67S285FTG achieve current sensing without an external sense resistor?

The TB67S285FTG uses Toshiba's Advanced Current Detection System (ACDS), which integrates matched MOSFET current mirrors and precision comparators to replicate and monitor phase current internally. This eliminates the need for external shunt resistors while maintaining ±10% current accuracy across temperature and supply variations - a core feature of the TB67S285FTG design.

Can multiple TB67S285FTG devices be controlled from a single microcontroller SPI port?

Yes, the TB67S285FTG supports serial cascade via its DOUT, COUT, and LOUT pins. Up to eight TB67S285FTG devices can be daisy-chained using a single 3-wire interface (DATA/CLOCK/LATCH), with each device forwarding shifted data to the next. This reduces GPIO usage and simplifies routing in multi-axis motion controllers using the TB67S285FTG.

What happens to the TB67S285FTG outputs during thermal shutdown (TSD)?

During thermal shutdown, the TB67S285FTG disables all H-bridge outputs (OUTA±/OUTB±), places them in high-impedance state, and asserts both LO1 and LO2 pins low. Recovery requires either cycling the VM supply or asserting STANDBY low then high - the TB67S285FTG does not auto-restart after temperature falls below threshold.

How is the chopping frequency (f_chop) set on the TB67S285FTG?

The chopping frequency is derived from the OSCM pin oscillator: f_chop = f_OSCM/16. f_OSCM is set externally using ROSC and COSC (recommended COSC = 270 pF), yielding f_chop from 50 kHz to 70 kHz. Alternatively, shorting OSCM to GND enables internal fixed mode (~57 kHz). This relationship is fixed in the TB67S285FTG silicon and cannot be altered via register writes.

TB67S285FTG,EL Specifications

Product attributes: Attribute value

Manufacturer:: Toshiba Semiconductor and Storage

Series:: -

Package/Case:: 48-VFQFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Active

Motor Type - Stepper:: Bipolar

Motor Type - AC, DC:: -

Function:: Driver - Fully Integrated, Control and Power Stage

Output Configuration:: Half Bridge (8)

Interface:: Parallel, Serial

Technology:: Power MOSFET

Step Resolution:: 1, 1/2, 1/4, 1/8, 1/16, 1/32

Applications:: General Purpose

Current - Output:: 3A

Voltage - Supply:: 4.75V ~ 5.25V

Voltage - Load:: 10V ~ 47V

Operating Temperature:: -20°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 48-VQFN (7x7)

TB67S285FTG,EL FAQ

1.How can I place an order for TB67S285FTG,EL through Aetrix?

Please submit a Request for Quotation (RFQ) for TB67S285FTG,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 TB67S285FTG,EL reliable?

The price and inventory of TB67S285FTG,EL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TB67S285FTG,EL is usually 5 days.

3.What payment methods are accepted for TB67S285FTG,EL?

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TB67S285FTG,EL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TB67S285FTG,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 TB67S285FTG,EL?

For technical support, including TB67S285FTG,EL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TB67S285FTG,EL requirements.

6.How does Aetrix verify that TB67S285FTG,EL is sourced from the original manufacturer or authorized distributors?

All TB67S285FTG,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 TB67S285FTG,EL meets industry standards.

7.What is the process for return or replacement of TB67S285FTG,EL?

All TB67S285FTG,EL units undergo pre-shipment inspection (PSI). If there is an issue with TB67S285FTG,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 TB67S285FTG,EL part is unused and in its original packaging.

Return procedure for TB67S285FTG,EL:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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