STMicroelectronics lança drivers de portão automotivos

STMicroelectronics launches automotive gate drivers

STMicroelectronics has released one-, two- and four-channel automotive high-side gate drivers in a common PowerSSO-16 package style, with pin assignments that simplify scaling circuit designs to add more driver channels.

Gate drivers target applications throughout the vehicle, including safety, comfort, powertrain, body electronics, infotainment and driver assistance systems. Meeting the automotive industry's LV124 test schedule for deep cold starting allows use with heavy loads such as engine starts and ensures reliable operation even in extreme winter conditions.

With a low standby current of just a few microamps, these drivers minimize battery drain when the vehicle is turned off and not in use.

The drivers are manufactured using ST's proprietary VIPower M0-9 technology, which enables extensive integration in a small die, as well as high current capacity and high efficiency. On-chip features include protection such as charge current limiting, charge discharge protection up to 35V, and fast thermal transient limiting. Flexible restart management allows the designer to configure driver responses to failures and thus better meet application needs.

The drivers provide reverse battery protection through auto-wake capability, which limits power dissipation on the PCB to a survivable level.

Additionally, diagnostic capabilities include high-precision proportional load current detection that allows you to detect load defects such as the disconnection of a string of LEDs. There is also detection of overload, short circuit to ground, short circuit to VCC and open load out of state. All diagnostics are maintained whether the driver is on or off, allowing faults to be detected even when the load is not powered.

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