PMIC combines 60-V transient support, 2.2-MHz switching frequency

PMIC combines 60-V transient support, 2.2-MHz switching frequency

The first in a family of automotive-qualified dc/dc controllers and converters, the TPS54362-Q1 power management IC combines 60-V transient support, 2-MHz switching frequency, and 65-µA quiescent current in a monolithic package. It converts an unregulated input voltage to a fixed lower-output voltage to power automotive applications, such as infotainment, navigation systems, and power supply for electronic control units. The controller helps reduce overall solution size, cost, and design complexity compared to discrete designs.

The dc/dc controller has a 3.6 to 48-V input range with up to 60-V transients, and has an integrated voltage supervisor for monitoring system performance. A voltage-mode buck regulator provides a cycle-by-cycle current limit. The pulse skip-mode operation under no load reduces the supply current to 65 µA. Using the enable pin helps reduce the supply shutdown current to 1 µA. An open drain reset signal indicates when the nominal output drops below the threshold set by an external resistor divider network. The output voltage-startup ramp is controlled by a soft-start capacitor, and an internal undervoltage shutdown is activated when the input supply ramps down to 2.6 V. ($2.75 ea/1,000 — available now.)

Texas Instruments , Dallas , TX
Product Information Center 800-477-8924
http://www.ti.com