ON Semiconductor has introduced AEC Qualified ICs which, thanks to their wide input voltage range and extensive operational temperature range, are highly optimized for automotive powertrain and in-cabin deployment.
Running off a 2 volt (V) to 44 V input voltage, the NCV8876 non-synchronous boost controller with automatic wake up and shutdown functions is designed to supply a minimum output voltage during start-stop conditions in order to counteract any sag in the vehicle's battery voltage. The NCV8876 is enabled when the supply voltage drops below 7.2 V, then boost operation is initiated once this voltage goes under 6.8 V, with the IC driving an external N-channel MOSFET. A quiescent current of just 11 microamperes (µA) is drawn when the device is in sleep mode so that power consumption is minimized. Among its array of protection features are cycle-by-cycle current limiting, thermal shutdown (with a 170 ?C threshold) and hiccup-mode over-current protection. Its peak current mode control with internal slope compensation ensures device stability over the entire voltage range. This also ensures that it is protected during a current fault condition by turning off the power switch for the remainder of the cycle if the current limit is exceeded.
The NCV8876 is offered in an SOIC-8 package and priced at $.90 USD per unit in 3,000 unit quantities.