The BD9S series. Source: RohmA series of automotive synchronous secondary buck DC/DC converters has been made available from Rohm offering a low power consumption with a wide temperature range.
The BD9S series offers high reliability in a compact form factor with a temperature range of -40° to 125° making it suitable for radars, cameras and sensors used in assisted driving.
The series includes a function to adjust the startup time and a PGOOD output indication to improve system functional safety. The series supports output currents from 0.6 to 4.0 A and is offered in 2 and 3 mm2 packages for a power conversion efficiency of 90%. The current mode control ensures fast response to load transients and combines with a fixed 2.2 MHz switching frequency to prevent interference in the AM band.
