The L98GD8 driver from STMicroelectronics has eight totally configurable channels for driving MOSFETs in versatile high-side and low-side configurations. It is ready to function from a 58V provide, and the L98GD8 offers wealthy diagnostics and safety for security and reliability.
The 48V energy internet lets automotive makers enhance the capabilities of mild-hybrid programs together with built-in starter-generators, extending electric-drive modes, and enhancing power restoration to satisfy stringent new, globally harmonized vehicle-emission assessments. Powering extra giant masses at 48V, such because the e-compressor, pumps, followers, and valves additional raises the general electrical effectivity and lowers the car weight.
ST’s L98GD8 assists the transition, as an built-in resolution optimized for driving the gates of NMOS or PMOS FETs in 48V-powered programs. With eight impartial, configurable outputs, a single driver IC controls MOSFETs related as particular person energy switches or as high-side and low-side switches in as much as two H-bridges for DC-motor driving. It may well additionally present peak-and-hold management for electrically operated valves. The gate present is programmable, serving to engineers decrease MOSFET switching noise to satisfy electromagnetic compatibility (EMC) rules.
Automotive-qualified and featured to satisfy the trade’s excessive security and reliability calls for, the L98GD8 has per-channel diagnostics for short-circuit to battery, open-load, and short-to-ground faults. Additional diagnostic options embody logic inbuilt self-test (BIST), over-/under-voltage monitoring with {hardware} self-check (HWSC), and a configurable communication examine (CC) watchdog timer.
As well as, overcurrent sensing permits many versatile configurations whereas the power to observe the drain-source voltage of exterior MOSFETs and the voltage throughout an exterior shunt resistor assist additional improve system reliability. There may be additionally an ultrafast overcurrent shutdown with dual-redundant failsafe pins, battery-under voltage monitoring, an ADC for battery and die temperature monitoring, and H-bridge present limiting.
The L98GD8 is in manufacturing now, in a 10mm x 10mm TQFP64 bundle with a budgetary pricing beginning at $3.94 for orders of 1000 items.
