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Friday, January 31, 2025

ST, Toshiba, and Infineon Launch Drivers for Manifold Motor Programs


STMicroelectronics, Toshiba, and Infineon have every launched new motor driver merchandise to help electrical mobility—a mainstay within the transportation business. 

 

New driver technologies

The brand new driver applied sciences goal varied automotive programs: oil pumps, electrical sunroofs, engine cooling followers, and past. 
 

This business depends on dependable, highly effective, and environment friendly motor programs, which embody each superior motor expertise and motor-driving built-in circuits.

 

ST: DC Motor Pre-Driver

STMicroelectronics lately launched its L99H92 automotive DC motor gate driver.

Engineered for driving 4 exterior N-channel MOSFET transistors in configurable automotive DC-motor functions, akin to sunroofs and energy trunk carry gates, the L99H92 driver (datasheet linked) helps twin unbiased half-bridge or single full-bridge configurations.

To help automotive functions, the L99H92 is certified below AEC-Q100 and is rated for an influence provide working vary from 4.51 V to twenty-eight V, with its gate drivers changing into operational from a minimal of 5.41 V. It might probably keep a 100% PWM obligation cycle right down to this voltage, due to a dual-stage cost pump that ensures the excessive and low sides of the MOSFETs obtain a minimal gate-source voltage of 6.2 V at 5.5 V and eight.2 V at voltages above 8 V, with respective cost pump load currents of 5 mA and 10 mA.

 

Block diagram of the L99H92

Block diagram of the L99H92. Picture used courtesy of STMicroelectronics
 

The machine incorporates a programmable gate driving present as much as 170 mA to manage the output voltage slew fee and higher handle electromagnetic interference (EMI). It additionally options built-in diagnostics and safety mechanisms, together with overcurrent safety, drain-source voltage monitoring, thermal pre-warning, and shutdown capabilities.

Architecturally, the L99H92 consists of two unbiased present sense amplifiers with low offset and thermal drift, appropriate for high-side, in-line, and low-side present sensing. These amplifiers help programmable positive factors of 10x, 20x, 50x, and 100x.

 

Toshiba: Gate Driver IC 

Toshiba lately introduced its new SmartMCD Collection TB9M003FG gate driver IC.

The TB9M003FG (datasheet linked) comes geared up with an embedded microcontroller, integrating an Arm Cortex-M0 core. Working at a frequency of 40 MHz, the microcontroller can quickly course of management algorithms important in dynamic automotive environments the place fast response occasions are crucial. It additionally helps a variety of communication protocols, together with LIN and PWM.

One of many TB9M003FG’s core strengths is its built-in vector engine, which facilitates sensorless management methods, thus eliminating the necessity for mechanical sensors. This characteristic simplifies the system design and improves reliability by decreasing the mechanical put on elements. The vector engine helps varied motor management capabilities, together with fixed-point calculations and PI management of d-axis and q-axis currents.

A motor driving circuit using SmartMCD

A motor driving circuit utilizing SmartMCD. Picture used courtesy of Toshiba
 

With a provide voltage starting from 6 V to 18 V and an operational temperature vary of -40°C to 150°C, the TB9M003FG is powerful sufficient to face up to the cruel environments sometimes present in automotive functions. Its bundle, a P-HTQFP48, measures simply 9.0 mm × 9.0 mm, and the machine is AEC-Q100 Grade 0 certified. 

 

Infineon: Brushless DC Motor Driver

Infineon has additionally expanded its motor driver portfolio with the TLE9140EQW, designed for driving brushless DC motors concentrating on the 24/48-V market

One of many TLE9140EQW‘s (datasheet linked) key worth propositions is its large provide voltage vary from 8.0 V to 72 V, which permits it to deal with transient voltage spikes as much as 100 V. This sturdy voltage-handling functionality is complemented by a complete gate cost driver functionality of 290 nC at 20 kHz, which ensures environment friendly switching efficiency for high-frequency motor management functions.

 

Block diagram of the TLE9140EQW

Block diagram of the TLE9140EQW. Picture used courtesy of Infineon
 

Infineon designed the TLE9140EQW’s structure to maximise operational effectivity and reliability. It contains a 16-bit serial peripheral interface (SPI) for communication and detailed management and monitoring of the machine’s operation. The built-in cost pump helps a 100% obligation cycle, which is essential for steady motor operation with out efficiency degradation. The machine consists of quite a lot of protecting measures akin to undervoltage and overvoltage shutdown, overtemperature safety, and cross-current safety.  

The machine can also be engineered for minimal quiescent present draw, consuming solely 26 µA in standby mode.

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