Home > ST launches two 40V automotive MOSFETs with excellent noise performance

ST launches two 40V automotive MOSFETs with excellent noise performance

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article image STL140N4F7AG and STL190N4F7AG MOSFETs

STMicroelectronics Pty Ltd announces the release of two new 40V automotive MOSFETs with superior noise performance and efficiency.

The new 40V automotive-qualified MOSFETs feature the latest STripFET F7 technology, which combines superior switching performance and energy efficiency with very low emitted noise and high immunity to false turn-on.

The new devices with current ratings up to 120A find application in high-current powertrain, body, or chassis and safety systems, while the switching characteristics make them perfectly suited for motor drives such as in Electric Power Steering (EPS).

ST’s STripFET families use DeepGATE technology to achieve low RDS(on) per die area and low RDS(on) x gate charge (Qg), giving superior energy efficiency in familiar power packages as well as high avalanche ruggedness.

STripFET F7 enhances switching performance and maximises energy efficiency by lowering the body-diode reverse-recovery charge (Qrr) and reverse-recovery time (trr), while softer recovery minimises electromagnetic interference (EMI), thereby easing demand for filtering components. Additionally, optimised device capacitances increase noise immunity, relieving the need for snubber circuitry, and threshold-voltage tuning ensures high false turn-on immunity without requiring a dedicated gate driver. In bridge circuits such as motor drives, the soft diode recovery helps prevent shoot-through currents to enhance reliability.

The 40V STL140N4F7AG and STL190N4F7AG MOSFETs are qualified to AEC-Q101 in the PowerFLAT 5x6 package with wettable flanks. Key benefits also include a compact footprint and 0.8mm profile enabling high system power density, and the flank design aiding solder-joint reliability and lifespan as well as allowing 100% automatic optical inspection. 

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