ON Semiconductor has introduced a series of switching buck regulators for space-constrained, electromagnetic compatibility (EMC) sensitive automotive entertainment and infotainment applications. The company claims the highly integrated devices offer industry leading conversion ratios for battery connected switch-mode power supplies.
The NCV890100, NCV890101, NCV890130, NCV890131, NCV890200, NCV890201, and NCV890231 each incorporate an internal power switch and operate at 2 MHz. The 2 MHz switching frequency allows the use of smaller, less costly inductors and capacitors for both the input and output filters. The switching frequency of the NCV890101, NCV890131, NCV890201, and NCV890231 devices can also be synchronized to an external clock source.
"The combination of the high switching frequency and an internal N-channel power switch enables the design of highly compact automotive power systems,” said Jim Alvernaz, ON Semiconductor director of automotive products.
ON notes, while competitive devices are capable of converting 16 down to 3.3V, the devices in its new series have the capacity to convert an 18V input to outputs as low as 3.3V, and a 16V input to outputs as low as 2.5V—while maintaining a constant switching frequency of 2 MHz.
These switching buck regulators can operate over a voltage range from 4.5 up to 36V, and can tolerate load dump voltages up to 40V (45V for 890x3x versions), making them well suited to harsh automotive start-stop and cold-crank conditions. The NCV890100, NCV890101, NCV890130 and NCV890131 deliver 1.2A of peak output current, while the NCV890200, NCV890201 and NCV890231 deliver a peak output current of 2A.
Packaging and pricing
The NCV890100, NCV890101, NCV890200, NCV890130, NCV890131, NCV890231, and NCV890201 are all AEC-Q100 qualified and Production Part Approval Process (PPAP) capable. The devices are offered in Pb-free, RoHS-compliant DFN-8, DFN-10 and SOIC-8 packages, and are priced at $1.13 to $1.50 per unit in 2,500 unit quantities.
Get a weekly highlights update from Automotive Designline delivered directly to your inbox by signing up for our weekly automotive electronics newsletter here