TB9083FTG(EL)

Overview

The TB9083FTG(EL) is a three-phase brushless DC motor pre-driver IC designed for automotive applications, including electric power steering and electric brakes. It controls external N-channel power MOSFETs and integrates safety relays to eliminate external components. The device supports ASIL-D functional safety per ISO 26262, featuring built-in redundancy, ABIST, LBIST, and CRC-verified SPI interfaces. It operates within a supply voltage range of 3 V to 5.5 V, with a maximum PWM chopping frequency of 20 kHz. The IC includes an amplifier for current detection with six selectable gain settings and is housed in a compact P-VQFN48 package with wettable flanks.

Feature Summary

• Supports ASIL-D functional safety specifications compliant with ISO 26262 Second Edition requirements.
• Integrates three-channel pre-drivers and safety relays for motor and power control, reducing component count.
• Includes an internal amplifier for motor current detection with six configurable gain levels.
• Features redundant design, analog/logic built-in self-tests, and SPI interface with CRC verification.

Applications

• Electric Power Steering (EPS) systems
• Electric brake actuators
• Automotive pump drivers

Procurement Notes

Verify the specific suffix EL against the manufacturer's datasheet to confirm package type and tape/reel specifications. Ensure compliance with AEC-Q100 qualification standards required for automotive deployment. Confirm moisture sensitivity level handling procedures during assembly. Validate that the selected variant matches the intended ASIL-D safety integrity requirements for the target application.

Selection Notes

Select this component for high-safety automotive BLDC motor control where integrated relay functionality reduces board space. The small P-VQFN48 package with wettable flanks aids in automated inspection and reliability. Consider the internal current detection amplifier if external sensing circuits are to be minimized. Verify compatibility with the system's SPI communication protocol and CRC error checking needs.

Part Context

This part belongs to Toshiba's automotive gate driver family, specifically targeting three-phase BLDC motors. It complements other Toshiba solutions like the TB9084FTG by offering integrated safety relay control. The inclusion of wettable flank technology in the VQFN48 package distinguishes it from standard QFN packages, enhancing solder joint visibility and reliability for critical automotive systems.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Evaluate alternative Toshiba pre-drivers based on pin compatibility and safety certification levels if substitution is necessary.

FAQ

Does the TB9083FTG(EL) include internal safety relays?

Yes, the IC integrates three-channel pre-drivers along with safety relays for controlling the motor and power supply, which helps reduce the number of external components required.

What is the maximum PWM chopping frequency supported?

The device supports a PWM chopping frequency of up to 20 kHz.

How does the IC handle current detection?

It features a built-in amplifier for motor current detection that amplifies the voltage generated across shunt resistors, offering six selectable gain control options.