3-Phase universal BLDC Motor Gate Driver IC for diverse voltage applications ranging from 8V~72V
News
New MOTIX™ motor gate driver IC: enabling easy migration from 12 V to 48 V systems and full support of functional safety requirements
09/05/2024Infineon Technologies AG (FSE: IFX / OTCQX: IFNNY) introduces the MOTIX™ TLE9140EQW gate driver IC for brushless DC motors targeting the demanding 24/48 V market. The TLE9140 is tailored for automotive motor control applications featuring higher voltage requirements from 24 V up to a maximum of 72 V, where higher system reliability and faster switching behavior are necessary. The IC is the ideal complement to Infineon’s MOTIX MCU TLE987x and TLE989x 32-bit motor control SoC solutions but also suitable as 48 V BLDC driver with common MCUs on the market. Typical applications include pumps and fans, windshield wipers, the HVAC module, or e-compressors. In addition, the TLE9140 is applied as 3-phase motor gate driver for applications in commercial, construction, and agricultural vehicles as well as in light electric vehicles such as eBikes, eScooters or eMotorcycles.
“Our new motor gate driver IC allows customers to easily scale their existing 12 V MOTIX TLE987x and TLE989x motor control designs to 24 V or 48 V systems”, says Andreas Doll, Senior Vice President, and General Manager Smart Power at Infineon. “The TLE9140EQW enables the reuse of hardware and software designs, allowing our customers to shorten their time-to-market and optimize their development costs when moving to 24/48 V systems.”
The gate driver IC offers functional safety according to ISO 26262 ASIL B. It is housed in a small TS-DSO-32 package. The IC offers a high voltage capability up to 110 V, a gate driver capability of ~230 nC/MOSFET up to 20 kHz as well as SPI communication. It has an active low-side (LS) freewheeling function during V SM overvoltage (OV) and a wide range of important diagnostic and protection functions such as timeout-watchdog, drain-source monitoring, overvoltage, undervoltage, cross-current and over-temperature protection as well as off-state diagnostics.
In addition, the TLE9140 includes Infineon’s patented gate shaping function, an adaptive MOSFET control that can compensate for fluctuations in the MOSFET parameters in the system. It automatically adjusts the gate current to achieve the desired switching behavior. This allows the system to be optimized in terms of electromagnetic emissions (EMI) by slower slew rates, while minimizing power dissipation through shorter dead times and shorter rise/fall times.
To accelerate the evaluation and design-in process, Infineon’s MOTIX motor control ICs are accompanied by a wide range of software and tools. The TLE9140 evaluation board is user-friendly and enables rapid evaluation and prototyping. In addition, Infineon provides a configuration wizard and a device driver for the TLE9140 that provides a simple API for generating the control frames for the external bridge driver via SPI. Both are available free of charge.
As the market strives for cars and trucks with better performance, manufacturers need to optimize the supply to automotive applications such as cooling fans, water pumps and wiper applications. In addition, as mobility with motorcycles and bikes is being redefined in the electric revolution, manufacturers of these applications need scalable and innovative solutions to insure safe and reliable mobility. The new Infineon MOTIX™ TLE9140EQW BLDC gate driver is the right product to design exactly these applications in 8V to 72V systems. The IC also perfectly complements MOTIX™ MCU TLE987x (e.g. TLE9877/ TLE9879) products allowing a scalable inverter solution from 8 – 72V to maximize HW and SW re-use. Furthermore, the innovative and small TS-DSO-32 packing allows for space and weight reduction on the PCB, which enables designing cost competitive application solutions.
This compact BLDC gate driver IC is easily compatible with up to 3kW applications and even with higher performance classes depending on the overall applications design.
Summary of Features
- High voltage capability / robustness up to 110V
- Gate driving capability: ~230nC / MOSFET up to 20kHz
- Gate-shaping feature
- Active LS freewheeling during VSM OV
- BEMF comparator
- Timeout-Watchdog
- Diagnostics & Protections
- Drain-Source monitoring
- Off-state diagnostics
- Overvoltage & Undervoltage protection
- Cross-current protection
- Overtemperature protection
- SPI communication
- Grade-0: Operational up to 175°C junction temperature
- ISO26262 compliance:
- Development acc. to ISO26262
- Safe switch off path fulfilling ASIL-B metric
Benefits
- In conjunction with MOTIX™ MCU:
- Easy approach and scaling for 24V/48V battery voltage applications
- Optimized 24V/48V chipset comprising of MOTIX™ MCU and discrete motor driver IC using the supervision and protection functions from the SOC solution
- Input pin is high voltage compatible which allows the device to be controlled by the output of the MOTIX™ MCU, hence additional GPIO Pins are made available for other functions
- Maximize re-use of MOTIX™ MCU motor control software for faster time-to-market
- Product also allows for flexible MCU selection for increased flexible application design
- Max junction temp of 175°C to support challenging mission profiles
- Configurable low side freewheeling features protects the 48V system from overvoltage damage
- Small packaging design TS-DSO-32 saving space and weight (8.65 x 3.9 mm @ body size, 52mm² PCB footprint)
- Development acc. to ISO26262 achieving ASIL-B
Potential Applications
- Engine cooling pump
- water pump
- oil pump
- e-compressor
- e-bike/ e-scooter
- CAV/ Truck
- eTruck
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