L99MH98 datasheet(2/147 Pages) STMICROELECTRONICS

2 / 147 page

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Engine vibrations compensation system

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Power lift gate

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Central door lock

Description

L99MH98 is an integrated octal half-bridge pre-driver dedicated to control up to sixteen N-channel MOSFETs.

It is intended for DC motor control applications such as automotive power seat control or other applications.

A 24-bit serial peripheral interface (SPI) is used for configuring and controlling the eight half-bridges or four

‑bridge. SPI status registers provide high-level diagnostic information such as supply voltage monitoring, the

charge pump voltage monitoring, temperature warning and overtemperature shutdown.

Each gate driver monitors independently its external MOSFET drain-source voltage for fault conditions.

The L99MH98 supports indirect current measurement on external MOSFETs, allowing cost saving and lower

system complexity, avoiding the usage of shunt resistors.

A more efficient gate current control of the external MOSFETs, called “three stages gate current”, decreases and

optimizes electromagnetic interference (EMI).

Protection features (drain-source monitoring for short circuit detection, overtemperature warning and shutdown,

timeout watchdog for MCU control, detailed off-state diagnostic via SPI) ensure the ASIL-B achievement

according to ISO 26262 standard.

The L99MH98 is hosted in a VFQFPN48L package with exposed pad. This package has wettable flanks for easy

visual inspection of the solder joint.

L99MH98

DS14611 - Rev 3

page 2/147

L99MH98 Fiches technique(PDF) 2 Page - STMicroelectronics