Infineon OPTIREG Switcher Regulators, available now from Mouser, are synchronous step-down regulators that are specifically designed for automotive applications. The device provides a current capability of 2A or 2.5A, fixed 3.3V or 5V output voltage, and a feedback voltage accuracy of ±1.5% in PWM mode. The device's integrated power stages, soft-start feature, and integrated compensation network decrease the required quantity of external components and therefore, system costs and board space. The wide input voltage range and a 100% duty cycle operation mode make the regulators ideal for battery cranking scenarios in automotive applications. The wide switching frequency range enables the pick of appropriate coils and capacitors. The switching frequency can be synchronised to an external clock signal.
Spread spectrum frequency modulation can be activated to increase the EMI performance in PWM operation. The device provides low current consumption in PFM mode at light loads to optimise efficiency. These devices can detect undervoltage and overvoltage conditions of the output voltage and shows this with the reset output signal. Overcurrent and overload protections evade excessive current to guard the device during short circuit conditions at the buck converter output. The integrated thermal shutdown feature protects the device from overheating. The enhanced PG-TSDSO-14 exposed pad package provides advantageous thermal performance in the application.
Typical automotive applications include the vehicle body, ADAS, infotainment and telematics, and navigation.