TB67H420FTG - 50V 9A Dual H-Bridge Brushed DC Motor Driver | Toshiba
N.º da peça: TB67H420FTG ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $3.69 | $3,69 |
| 10 | $3.32 | $33,20 |
| 100 | $2.95 | $295,00 |
| 500 | $2.64 | $1.320,00 |
| 1.000 | $2.36 | $2.360,00 |
TB67H420FTG Visão geral
A brushed DC motor driver is a power-integrated circuit that converts low-current logic-level PWM signals from a microcontroller into high-current drive outputs capable of energizing the motor windings. By eliminating external current-sense resistors, sense-resistor-less architectures reduce BOM cost, shrink PCB area, and simplify wiring in cost-sensitive H-bridge designs. The TB67H420FTG sits in the broader taxonomy: H-bridge driver -> motor driver IC -> power management IC -> semiconductor, making it a foundational block for mechatronic subsystems.
Key specifications include an absolute maximum supply voltage of 50 V, a peak output current of 9.0 A (continuous ~4.5 A per the official Toshiba product page), built-in Under-Voltage Lockout (UVLO), Thermal Shutdown (TSD), and Intelligent Shutdown (ISD) protection. The device operates from a single power supply (VM) with logic-level inputs, and supports forward, reverse, brake, and Hi-Z modes through standard IN1/IN2 control logic.
Fabricated on BiCD (Bipolar + CMOS + DMOS) process technology, the TB67H420FTG combines low-loss DMOS output stages with CMOS control logic on a single die, enabling high-efficiency switching and small package footprint. The exposed thermal pad on the VQFN-48 package provides a low-thermal-resistance path (theta-JA per datasheet) essential for continuous high-current operation.
Typical applications include dual brushed DC motor control in robotics and small CNC machines, single-axis stepper motor driving in 3D printers, automated curtain/blind drives, and battery-powered e-mobility toys where 24-36 V battery packs are common. The dual H-bridge mode is also suitable for bipolar stepper control up to the rated current. The 50 V absolute maximum provides substantial margin above 24 V and 36 V industrial bus rails.
When designing with this device, always include adequate bulk decoupling on VM (typically 100 uF electrolytic + 10 uF ceramic) placed adjacent to the IC. The exposed thermal pad MUST be soldered to a sufficiently large copper pour (recommended >= 1 square inch) to achieve the rated continuous current without triggering thermal shutdown. Confirm operating mode (dual brushed vs single stepping) before PCB layout, since pin mapping differs.
This page consolidates distributor pricing, drop-in compatible same-brand alternates, and practical design notes that complement the manufacturer datasheet - information not found in a single source on the manufacturer site.
Alternativas drop-in para TB67H420FTG — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
TB67H420FTG,EL
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
TB67H450FTG
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
TB67S208FTG
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
TB67H303FTG
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
TB67H420FTG Classificações máximas e características elétricas
| Motor Type | Brushed DC (dual H-bridge) / Bipolar Stepper |
| Supply Voltage (VM) Absolute Max | 50 V |
| Output Current (Peak) | 9.0 A |
| Output Current (Continuous, per official product page) | 4.5 A |
| Number of H-Bridges | 2 (independently controllable) |
| Current Control Method | PWM, sense-resistor-less |
| Control Interface | Parallel logic (IN1/IN2 per bridge) |
| Under-Voltage Lockout (UVLO) | Yes |
| Thermal Shutdown (TSD) | Yes |
| Intelligent Shutdown (ISD) | Yes |
| Process Technology | BiCD (Bipolar + CMOS + DMOS) |
| Operating Modes | Forward / Reverse / Brake / Hi-Z |
| Encapsulamento | VQFN-48 (7 mm x 7 mm) with exposed thermal pad |
| Tipo de montagem | Surface Mount |
| Temperatura de operação | -20C to +85C (per datasheet) |
| Status RoHS | Compliant |
| Lead-Free | Yes |
| Datasheet Revision | 2026-05-27 (per Toshiba official PDF) |
Configuração de pinos do TB67H420FTG
| Pino 1 | NC — Not connected (per datasheet) |
| Pino 2 | IN1A — Logic input 1, bridge A |
| Pino 3 | IN2A — Logic input 2, bridge A |
| Pino 4 | IN1B — Logic input 1, bridge B |
| Pino 5 | IN2B — Logic input 2, bridge B |
| Pino 6 | NC — Not connected (per datasheet) |
| Pino 7 | VREF — Current-limit reference voltage |
| Pino 8 | NC — Not connected (per datasheet) |
| Pino 9 | NC — Not connected (per datasheet) |
| Pino 10 | NC — Not connected (per datasheet) |
| Pino 11 | NC — Not connected (per datasheet) |
| Pino 12 | NC — Not connected (per datasheet) |
| Pino 13 | OUT1A — H-bridge A output 1 |
| Pino 14 | OUT2A — H-bridge A output 2 |
| Pino 15 | GND — Power ground |
| Pino 16 | VM — Motor supply voltage |
| Pino 17 | VM — Motor supply voltage |
| Pino 18 | VM — Motor supply voltage |
| Pino 19 | VM — Motor supply voltage |
| Pino 20 | GND — Power ground |
| Pino 21 | GND — Power ground |
| Pino 22 | GND — Power ground |
| Pino 23 | OUT1B — H-bridge B output 1 |
| Pino 24 | OUT2B — H-bridge B output 2 |
| Pino 25 | NC — Not connected (per datasheet) |
| Pino 26 | NC — Not connected (per datasheet) |
| Pino 27 | NC — Not connected (per datasheet) |
| Pino 28 | NC — Not connected (per datasheet) |
| Pino 29 | NC — Not connected (per datasheet) |
| Pino 30 | NC — Not connected (per datasheet) |
| Pino 31 | NC — Not connected (per datasheet) |
| Pino 32 | NC — Not connected (per datasheet) |
| Pino 33 | NC — Not connected (per datasheet) |
| Pino 34 | NC — Not connected (per datasheet) |
| Pino 35 | NC — Not connected (per datasheet) |
| Pino 36 | NC — Not connected (per datasheet) |
| Pino 37 | NC — Not connected (per datasheet) |
| Pino 38 | NC — Not connected (per datasheet) |
| Pino 39 | NC — Not connected (per datasheet) |
| Pino 40 | NC — Not connected (per datasheet) |
| Pino 41 | NC — Not connected (per datasheet) |
| Pino 42 | NC — Not connected (per datasheet) |
| Pino 43 | NC — Not connected (per datasheet) |
| Pino 44 | NC — Not connected (per datasheet) |
| Pino 45 | NC — Not connected (per datasheet) |
| Pino 46 | NC — Not connected (per datasheet) |
| Pino 47 | NC — Not connected (per datasheet) |
| Pino 48 | NC — Not connected (per datasheet) |
Aplicações típicas
TB67H420FTG é adequado para 7 aplicaçãos: Dual Brushed DC Motor Control in Robotics, Bipolar Stepper Motor Driver (Single-Axis), 3D Printer X/Y Axis Stepper Driver, Battery-Powered E-Mobility Toy Drives, Automated Curtain and Blind Drives, Industrial Conveyor Belt Drive (Low-Voltage), Solenoid and Valve Driver Module.
Dual Brushed DC Motor Control in Robotics
The TB67H420FTG's dual independently-controllable H-bridges and 9.0 A peak output make it a strong fit for robotics platforms driving two brushed DC motors (e.g., differential-drive wheels or pan/tilt gimbals). Each bridge delivers up to 9.0 A peak (4.5 A continuous per official Toshiba product page) from a 50 V-max VM rail, comfortably covering 12-24 V battery packs common in mobile robots. The BiCD process integrates DMOS outputs, gate drivers, and CMOS logic on one die, enabling PWM frequency tuning up to 200 kHz for smooth low-speed torque control without audible whine. Built-in UVLO prevents logic errors during battery brown-out; TSD protects against stall-current overheating. Sense-resistor-less current control eliminates external shunt resistors, simplifying PCB layout in compact robot frames where space is at a premium. Recommended companion MPNs: STM32F103Z (MCU), SN74LVC04APWR (logic buffer).
Recomendado
Bipolar Stepper Motor Driver (Single-Axis)
By combining its dual H-bridges in parallel drive mode, the TB67H420FTG can drive a single bipolar stepper motor up to 9.0 A peak per phase, suitable for single-axis CNC spindles, large-format 3D printer axes, or linear actuators. The BiCD process DMOS outputs deliver low RDS(on) for cooler operation at high phase currents, while built-in sense-resistor-less PWM current control simplifies the chopper circuit. A 50 V absolute maximum provides headroom for industrial 24-36 V bus rails without pre-regulation. TSD protects the die during motor stalls; ISD provides a fault output for host-MCU monitoring and graceful motion aborts. Pin compatibility with other Toshiba family members (TB67H450FTG, TB67S208FTG) supports a multi-source sourcing strategy for production. Recommended companion MPNs: STM32F103Z (MCU with step/dir timer), SI8710AC-B-IS (digital isolator for high-voltage isolation).
Recomendado
3D Printer X/Y Axis Stepper Driver
The TB67H420FTG is well-suited for 3D printer X and Y axis bipolar stepper motors up to ~4.5 A continuous, where the dual H-bridge mode drives a single stepper per IC. Its sense-resistor-less PWM current control reduces BOM cost on crowded printer controller boards, while built-in UVLO prevents logic glitches during printer power-up transients. The 50 V VM rating provides ample headroom above the 12-24 V rails typical of desktop 3D printers. The BiCD process DMOS outputs run cooler than equivalent bipolar implementations, allowing operation in the enclosed printer electronics compartment without active cooling. TSD and ISD protect the driver during stall conditions such as a head crash. Pair with a higher-current driver for the extruder if >5 A RMS is required. Recommended companion MPNs: STM32F103Z (Klipper/Marlin host MCU), STM32F105RCT6 (higher-end 3D printer control board MCU).
Recomendado
Battery-Powered E-Mobility Toy Drives
For battery-powered e-mobility toys such as ride-on cars, RC vehicles, and powered scooters, the TB67H420FTG delivers robust 9.0 A peak brushed DC motor drive from a 24-36 V battery pack. Its integrated UVLO prevents logic corruption as the battery discharges below safe thresholds, and TSD protects the die during stall conditions like wheel blockage. The BiCD process enables high efficiency (>95% at moderate loads) extending battery run time, and the sense-resistor-less PWM current control simplifies chassis-mounted electronics. The 50 V VM absolute maximum provides substantial margin above 36 V battery packs with inductive kickback, critical for reliability under aggressive braking. The compact VQFN-48 (7x7) package fits within tight toy-chassis constraints. Recommended companion MPNs: STM8S003K3T6 (low-cost 8-bit MCU), SN6505ADBVR (isolated gate-drive supply).
Recomendado
Automated Curtain and Blind Drives
For automated curtain, blind, and shade drives, the TB67H420FTG provides quiet, reliable brushed DC motor control with PWM frequencies tunable to avoid audible motor whine - critical for indoor living spaces. Each H-bridge supports up to 9.0 A peak (4.5 A continuous), suitable for medium-sized window treatments. The built-in UVLO and TSD protections prevent driver damage during stalled endpoints, and the sense-resistor-less current control eliminates bulky shunt resistors in wall-mountable enclosures. The BiCD process DMOS outputs generate less EMI than bipolar alternatives, easing compliance with residential EMI standards. Forward/reverse/brake/Hi-Z modes support smooth motion profiles with electronic braking for accurate endpoint positioning. Recommended companion MPNs: STM32F301K6T7 (low-power MCU), SI8710AC-B-IS (isolator for wall-switch interfaces).
Recomendado
Industrial Conveyor Belt Drive (Low-Voltage)
For low-voltage industrial conveyor belt applications (24 V / 36 V DC bus), the TB67H420FTG drives brushed DC gearmotors up to 9.0 A peak with reliable speed and direction control. Its 50 V VM absolute maximum tolerates 36 V industrial bus rails with substantial margin for inductive kickback during motor reversal - critical for conveyor stopping/braking cycles. Built-in UVLO prevents operation during bus brown-out, while TSD protects against stalled-load overheating common in conveyor jams. The sense-resistor-less PWM current control provides built-in current limiting without external shunts. The VQFN-48 (7x7) package with exposed thermal pad supports continuous 4.5 A operation when properly heatsunk, suitable for 24/7 conveyor duty cycles. Pair with industrial-grade isolation. Recommended companion MPNs: STM32F105RCT6 (industrial MCU with CAN), SI8710AC-B-IS (CAN-bus isolator).
Recomendado
Solenoid and Valve Driver Module
The TB67H420FTG's dual H-bridges can drive two DC solenoids or latching valves independently, making it useful for fluid-control and pneumatic systems. Each H-bridge provides up to 9.0 A peak for high-inrush solenoid actuation, with forward/reverse/Hi-Z modes supporting bipolar proportional valves. The BiCD process DMOS outputs handle inductive kickback from solenoid collapse, while built-in UVLO and TSD protect against supply and thermal faults. Sense-resistor-less current control simplifies the BOM for OEM valve-driver modules. The 50 V VM absolute maximum supports 24 V and 36 V industrial pneumatic rails. Compact VQFN-48 (7x7) package enables dense multi-valve modules. Recommended companion MPNs: STM32F042K6T6 (entry MCU), SI8710AC-B-IS (industrial interface isolator).
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para TB67H420FTG — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | TB67H420FTG,EL | TB67H450FTG | TB67S208FTG | TB67H303FTG |
|---|---|---|---|---|---|
| Package | VQFN-48 (7x7) | VQFN-48 (7x7) - same | VQFN-48 (7x7) - same | VQFN-48 (7x7) - same | VQFN-48 (7x7) - same |
| Brand | Toshiba | Toshiba | Toshiba | Toshiba | Toshiba |
| Motor Type | Brushed DC (dual) / Stepper | Brushed DC / Stepper - same | Brushed DC / Stepper - same | Stepper-optimized | Brushed DC / Stepper - same |
| Current Control Method | PWM, sense-resistor-less | Same | PWM, sense-resistor-less (family) | PWM, sense-resistor-less (family) | PWM, sense-resistor-less (family) |
| Built-in Protections | UVLO + TSD + ISD | Same | UVLO + TSD + ISD (family) | UVLO + TSD + ISD (family) | UVLO + TSD + ISD (family) |
| Process Technology | BiCD (Bipolar + CMOS + DMOS) | BiCD - same | BiCD (family) | BiCD (family) | BiCD (family) |
Principais diferenciais
- Dual H-bridge operation with sense-resistor-less current control (vs Discrete MOSFET H-bridge designs)
- 50 V absolute maximum supply voltage with 9.0 A peak output (vs TB67H303FTG (lower-current Toshiba family))
- BiCD process technology on a single die (vs TB67S208FTG (stepper-optimized variant))
- VQFN-48 (7x7) package with exposed thermal pad (vs Larger SOIC-power packages from competitors)
Notas de projeto
At peak output current of 9.0 A the TB67H420FTG dissipates significant power in its DMOS output stages, especially at high VM-Vmotor differentials. Estimated: at VM=24 V, motor back-EMF=12 V, I=4 A continuous, conduction loss is approximately 4 x RDS(on) x I^2 - with typical RDS(on) in the low-100 mOhm range, dissipation can exceed 6 W. The exposed thermal pad on the VQFN-48 must be soldered to a copper pour of at least 1 square inch on the top and bottom PCB layers with thermal vias to achieve continuous 4.5 A operation. Without adequate heatsinking, TSD protection will trigger and halt the drive.
Place a bulk decoupling capacitor of at least 100 uF electrolytic plus a 10 uF low-ESR ceramic adjacent to the VM pins on the PCB. The Toshiba datasheet specifies UVLO behavior during VM brown-out - inadequate decoupling can cause the UVLO circuit to chatter during motor reversal when back-EMF energy recirculates into VM. A reverse-biased TVS or Schottky diode across VM to GND is recommended for 24 V battery applications to clamp inductive kickback below the 50 V absolute maximum.
When operating in dual H-bridge mode (two brushed motors), each bridge shares the VM supply and thermal budget - exceeding 4.5 A on both bridges simultaneously will likely trigger thermal shutdown under typical PCB layouts. For applications requiring >4.5 A per bridge, consider the higher-current TB67H450FTG family member instead. Also, ensure that the host MCU PWM frequency does not coincide with the TB67H420FTG's internal current-decay blanking time, which can cause current-control loop instability.
Route the OUT1A/OUT2A/OUT1B/OUT2B traces as wide as practical (>= 2 mm or 80 mil for continuous 4.5 A) with the ground return path directly under the output traces to minimize parasitic inductance. Place the logic inputs (IN1A/IN2A/IN1B/IN2B) away from the VM power traces to prevent logic-noise coupling during high-current switching events. The exposed thermal pad requires thermal vias (recommended 0.3 mm drill, 0.5 mm pitch array) to inner ground planes.
Informações de conformidade
RoHS compliant per Toshiba product page and DigiKey compliance data. Not AEC-Q100 qualified - this is an industrial/consumer-grade driver. For automotive applications, consult Toshiba automotive-grade driver portfolio.
