onsemi NCP81278DMNTXG

The NCP81278D/T, a 2−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 receives power save input (PSI) from processors and operates 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 inductors and capacitors. Introduction of multi−phase current−mode RPM control results in fast transient response and good dynamic current balance. It is able to support all−ceramic−capacitor applications.

• 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 Cycle−by−Cycle Current Limit
• Over Voltage Protection
• Fast Under Voltage Protection
• Slow Under Voltage Protection (NCP81278T Only)
• Thermal Shutdown Protection
• QFN20, 3x3 mm, 0.4 mm Pitch Package

• GPU and CPU Power
• Graphics Card Applications
• Desktop and Notebook Applications