The NCP81172M integrated circuit is a general-purpose two-phase buck controller with integrated gate drivers and a PWM VID interface. It supports an input voltage from 4.5 V to 24 V and an output voltage of up to 2.0 V. It accepts a power-saving PSI command from the processor and operates in single-phase diode emulation mode under light-load conditions.

The switching frequency is adjustable from 200 kHz to 800 kHz, and the circuit supports applications using ceramic capacitors exclusively. It includes differential output voltage sensing, a Power Good output, programmable overcurrent protection, and overvoltage and undervoltage protection.

• Type: Integrated circuit
• Compatibility: Universal
• Controller type: Two-phase buck
• Input voltage: 4.5 V to 24 V
• Output voltage: Up to 2.0 V
• Interface: PWM VID
• Switching frequency: 200 kHz to 800 kHz
• Gate drivers: Integrated
• Output voltage sensing: Differential
• Power-saving management: PSI interface
• Power Good output: Yes
• Overcurrent protection: Programmable
• Overvoltage protection: Yes
• Undervoltage protection: Yes
• Package: QFN-24