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Toshiba Semiconductor and Storage TB9051FTG,EL
- Part No.:
- TB9051FTG,EL
- Manufacturer:
- Toshiba Semiconductor and Storage
- Category:
- Motor Drivers, Controllers
- Package:
- 28-PowerQFN
- Datasheet:
-
TB9051FTG,EL.pdf
- Description:
- MOTOR CONTROLLER SINGLE CHANNEL
- Quantity:
- Payment:
- Shipping:
Inventory:3,235
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Product details
Overview
TB9051FTG from Toshiba Electronic Devices & Storage Corporation is a PWM-controlled single-channel H-bridge DC brushed motor driver IC for automotive applications, integrating high-efficiency Bi-CMOS output stages with 0.45 Ω max (Pch+Nch) on-resistance at 150°C, 5 A peak output current, and AEC-Q100 qualification - used in throttle/valve actuation, seat positioning, and door mirror adjustment.
For engineers reviewing the TB9051FTG datasheet, TB9051FTG pinout, TB9051FTG application, or TB9051FTG equivalent, this page delivers verified technical context, real-world motor control modes (Forward/Reverse/Brake), integrated diagnostics (DIAG, OCM), protection features (over-current, over-temperature, VBAT/VCC monitoring), and automotive-grade thermal and voltage robustness.
Technical Context
The TB9051FTG implements a fully integrated H-bridge with independent Pch/Nch DMOS output stages, chopper-type current limiting (Ilim-H = 6.5 A typ., Ilim-L = 6.25 A typ.), and 4 μs typ. dead-time control to prevent shoot-through. Its dual enable architecture (EN/ENB) supports fail-safe disable logic and diagnostic latching.
It embeds five independent protection circuits: VBAT undervoltage (detection threshold ~4.5 V), VCC undervoltage/POR (3.07 V typ.), VCC overvoltage (~6.0 V), over-temperature (TSD = 170°C typ.), and over-current (11 A typ. for short-circuit events). The DIAG pin provides open-drain latched fault reporting, while OCM enables real-time high-side current monitoring (0–6 A → 0–13.38 mA).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Type | PWM-controlled H-bridge with Forward/Reverse/Short-brake operation modes |
| Max Output Current | 5 A continuous (peak rating); supports automotive actuators like throttle valves and seat motors |
| On-Resistance (Pch+Nch) | ≤0.45 Ω at Tj = 150°C, VBAT = 8 V - enables low conduction loss and thermal efficiency |
| Operating Voltage Range | VBAT = 4.5 V to 28 V (40 V absolute max for 0.5 sec); compatible with 12 V/24 V automotive systems |
| Temperature Range | −40°C to +125°C ambient (Ta); qualified per AEC-Q100 Grade 1 |
| Protection Functions | Integrated over-current, over-temperature, VBAT undervoltage, VCC undervoltage/POR, and VCC overvoltage detection |
| Diagnostic Interface | Open-drain DIAG pin with latched fault reporting; OCM pin outputs 0.223% of high-side current (0–13.38 mA for 0–6 A) |
Pinout & Package
Package: P-QFN28-0606-0.65-001 - 6 mm × 6 mm, 0.65 mm pitch, exposed E-Pad for thermal dissipation; RoHS-compliant and AEC-Q100 qualified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OCC | Over-current control input | Selects fault response mode (latched vs. auto-retry) for short-circuit events |
| VCC | 5 V logic/analog supply | Powers internal circuitry; monitored for POR and undervoltage lockout |
| EN / ENB | Enable / inverted-enable inputs | Complementary logic pair enabling fail-safe shutdown and DIAG latch clearing |
| PWM1 / PWM2 | H-bridge control signals | Determine motor direction and brake state (Forward: H/L; Reverse: L/H; Brake: L/L or H/H) |
| OUT1 / OUT2 | H-bridge output terminals | Drive brushed DC motor; rated for 40 V max, connected to PGND via power ground pins |
| OCM | High-side current monitor output | Analog current sink (0–13.38 mA) proportional to motor current - enables closed-loop feedback without shunt resistor |
| DIAG | Diagnostic status output | Open-drain signal asserting low during faults (over-temp, over-current, supply anomalies) |
| VBAT / PGND / AGND | Power and ground connections | VBAT (pins 11,12,24,25) supplies H-bridge; PGND (13–17,19–21) handles high-current return; AGND (pin 4) references analog/IO |
Key Features
| Feature | Design Value |
|---|---|
| Chopper-type current limiting | Ilim-H = 6.5 A typ., Ilim-L = 6.25 A typ., with 11.5 μs blanking time - protects motor and IC during stall conditions |
| Thermal-adjusted current limit | Threshold drops to 2.5 A typ. above Twar (150–170°C) - prevents thermal runaway under sustained overload |
| Through-current prevention | 4 μs typ. dead-time between Pch/Nch switching - eliminates shoot-through risk in H-bridge operation |
| Initial diagnosis function | Automated power-up check of VBAT/VCC levels and voltage integrity - reports failures via DIAG before enabling outputs |
| High-side current monitoring | OCM pin delivers linear 0.223% scaled current (0–13.38 mA for 0–6 A) - enables precise load sensing without external shunt |
| AEC-Q100 Grade 1 compliance | Qualified for −40°C to +125°C operation with full automotive reliability testing - suitable for safety-critical body electronics |
Applications
| Throttle Valve Actuation | Seat Position Adjustment |
|---|---|
Use Scenario: Precise angular control of engine air intake valve using closed-loop PWM drive. IC Role / Device Role / Timing Role: H-bridge driver executing Forward/Reverse/Brake commands from ECU; OCM provides real-time current feedback for position estimation. Use Value: Enables accurate throttle response with stall detection and thermal derating - critical for emissions compliance and drivability. |
Use Scenario: Bidirectional movement of automotive power seat mechanisms with end-stop detection. IC Role / Device Role / Timing Role: Motor driver delivering controlled torque in both directions; DIAG signals mechanical binding or overcurrent events. Use Value: Eliminates need for external current sense resistors and discrete protection - reduces BOM count and PCB area in space-constrained modules. |
| Door Mirror Folding | Engine Bulb Control |
Use Scenario: Automatic folding/unfolding of side-view mirrors with soft-start and jam detection. IC Role / Device Role / Timing Role: PWM-driven H-bridge with short-brake mode for rapid stop; OCM monitors current rise to detect obstruction. Use Value: Integrates motor control, diagnostics, and current sensing in one package - meets OEM requirements for silent, reliable mirror actuation. |
Use Scenario: Driving high-intensity incandescent or halogen bulbs (e.g., fog lamps, interior lighting) with inrush current management. IC Role / Device Role / Timing Role: Robust DC driver handling bulb cold-resistance surges; over-current protection prevents fuse blowouts. Use Value: Replaces electromechanical relays with solid-state switching - improves lifetime, EMC performance, and ECU integration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar H-bridge motor driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DRV8872NQPR | Lower max current (3.6 A), no OCM pin, uses external current sense; 5 V logic only | Lacks integrated high-side current monitoring and thermal-adjusted current limiting | Preferred where cost sensitivity outweighs diagnostic depth and thermal robustness |
| BD6212F-E2 | Higher Rds(on) (0.8 Ω typ.), no DIAG latch, no VCC overvoltage detection, non-AEC-Q100 | Suitable for non-automotive industrial motors but lacks automotive-grade fault coverage | Appropriate for consumer-grade applications where AEC-Q100 and multi-level protection are not required |
Compared with DRV8872NQPR and BD6212F-E2, the TB9051FTG delivers superior automotive readiness through AEC-Q100 qualification, integrated OCM-based current feedback, latched DIAG reporting, and thermal-adaptive current limiting - making it the only option among the three qualified for safety-critical throttle and seat control.
Availability
TB9051FTG is available at Aetrix Electronics and suitable for automotive body electronics, engine management subsystems, and ADAS-related actuator control requiring stable component supply across long production lifecycles.
Supply support for TB9051FTG 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 semiconductor solutions for automotive, industrial, and consumer markets, with leadership in power management and motor control ICs.
The TB9051FTG belongs to Toshiba's automotive-qualified Bi-CMOS motor driver family, engineered specifically for precision, safety-critical DC motor actuation in harsh vehicle environments - emphasizing diagnostic completeness, thermal resilience, and functional safety alignment.
FAQ
What is the maximum continuous output current rating for the TB9051FTG?
The TB9051FTG is rated for 5 A maximum continuous output current under specified thermal conditions (Tj ≤ 150°C, VBAT = 8 V). This rating supports common automotive actuators including throttle valves and seat motors. Peak currents beyond 5 A may be tolerated briefly during startup or transient events, but sustained operation above this level triggers chopper-type current limiting or thermal shutdown depending on junction temperature.
How does the TB9051FTG implement over-current protection?
The TB9051FTG uses two distinct over-current protection mechanisms: chopper-type current limiting (Ilim-H = 6.5 A typ.) for motor stall conditions, and fast short-circuit detection (11 A typ.) for VBAT/GND/load shorts. The OCC pin selects behavior - when high, it enables auto-retry with 500 ms timeout; when low, it latches faults until EN/ENB reset. Both paths assert DIAG = L and force OUT1/OUT2 into High-Z.
Can the TB9051FTG operate with a 24 V battery system?
Yes, the TB9051FTG supports VBAT from 4.5 V to 28 V, making it fully compatible with 24 V commercial vehicle systems. Its absolute maximum VBAT rating is 40 V for up to 0.5 seconds, accommodating load-dump transients common in heavy-duty automotive environments. Internal VBAT undervoltage detection activates below ~4.5 V to disable outputs safely.
What is the function of the OCM pin on the TB9051FTG?
The OCM pin on the TB9051FTG outputs a current proportional to the high-side motor current (0–6 A → 0–13.38 mA), enabling real-time load monitoring without an external shunt resistor. With a 220 Ω pull-down, this yields 0–2.94 V for ADC interfacing. It supports use cases like throttle angle estimation, jam detection, and closed-loop current regulation - directly enhancing system intelligence and fault diagnostics.
Is the TB9051FTG pin-compatible with other Toshiba motor drivers?
No, the TB9051FTG is not pin-compatible with other Toshiba motor drivers such as the TB9052FTG or TB9053FTG. Its 28-pin P-QFN layout, dual enable (EN/ENB) interface, OCC control pin, and OCM monitoring functionality are unique to this device. Migration requires PCB redesign and firmware adaptation to match its specific control timing, diagnostic signaling, and protection behavior.
TB9051FTG,EL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Toshiba Semiconductor and Storage
- Series:
- -
- Package/Case:
- 28-PowerQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Motor Type - Stepper:
- -
- Motor Type - AC, DC:
- Brushed DC
- Function:
- Driver - Fully Integrated, Control and Power Stage
- Output Configuration:
- Half Bridge (2)
- Interface:
- PWM
- Technology:
- Bi-CMOS
- Step Resolution:
- -
- Applications:
- -
- Current - Output:
- 6A
- Voltage - Supply:
- 4.5V ~ 5.5V
- Voltage - Load:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-QFN (6x6)
TB9051FTG,EL FAQ
1.How can I place an order for TB9051FTG,EL through Aetrix?
Please submit a Request for Quotation (RFQ) for TB9051FTG,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 TB9051FTG,EL reliable?
The price and inventory of TB9051FTG,EL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TB9051FTG,EL is usually 5 days.
3.What payment methods are accepted for TB9051FTG,EL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TB9051FTG,EL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TB9051FTG,EL?
TB9051FTG,EL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TB9051FTG,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 TB9051FTG,EL?
For technical support, including TB9051FTG,EL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TB9051FTG,EL requirements.
6.How does Aetrix verify that TB9051FTG,EL is sourced from the original manufacturer or authorized distributors?
All TB9051FTG,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 TB9051FTG,EL meets industry standards.
7.What is the process for return or replacement of TB9051FTG,EL?
All TB9051FTG,EL units undergo pre-shipment inspection (PSI). If there is an issue with TB9051FTG,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 TB9051FTG,EL part is unused and in its original packaging.
Return procedure for TB9051FTG,EL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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