NCP81278

NCP81278 Compact 2-Phase Synchronous Buck Controller with Integrated Gate Drivers and PWM VID Interface The NCP81278, a general−purpose two−phase synchronous buck controller, integrates gate drivers and PWM VID interface in a QFN−20 package and provides a compact−footprint power management solution for new generation computing processors. It has a programmable power save interface (PSI) and is able to operate in 1−phase diode emulation mode to obtain high efficiency in light−load condition. Operating in high switching frequency up to 800 kHz allows employing small size inductor and capacitors. The part is able to support all−ceramic−capacitor applications. Features 3.6 V to 24 V Input Voltage Range Output Voltage up to 2.0 V with PWM VID Interface Differential Output Voltage Sense Integrated Gate Drivers 200 kHz ~ 800 kHz Switching Frequency Power Saving Interface (PSI) Support both 3.3 V and 1.8 V VID Power Good Output Programmable Over Current Protection Over Voltage Protection Under Voltage Protection Thermal Shutdown Protection QFN20, 3x3 mm, 0.4 mm Pitch Package Typical Applications GPU and CPU Power Graphics Card Applications Desktop and Notebook Applications www.onsemi.com QFN20 CASE 485BC MARKING DIAGRAM 81278 ALYWG G 81278 A L Y W G = Specific Device Code = Assembly Location = Wafer Lot = Year = Work Week = Pb−Free Package (Note: Microdot may be in either location) PIN CONNECTIONS PH1 LG1 PVCC LG2 PH2 BST1 HG1 EN PSI VID 1 ...