NCP4200MNR2G

NCP4200MNR2G is a synchronous, multi-phase, buck converter with an I2C interface. It combines a highly efficient, multi-phase, synchronous buck-switching regulator controller with an I2C interface, which enables digital programming of key system parameters to optimize system performance and provide feedback to the system. It uses an internal 8-bit DAC to read a Voltage Identification (VID) code directly from the processor, which is used to set the output voltage between 0.375V and 1.6V. This device uses a multi-mode PWM architecture to drive the logic-level outputs at a programmable switching frequency that can be optimized for VR size and efficiency. It supports PSI, which is a Power Save Mode. It includes an I2C interface which can be used to program system set points such as voltage offset, load-line and phase balance, and output voltage. The applications include desktop PC power supplies for VRM modules.

• I2C interface enables digital programmability of set points and read-back of monitored values
• Logic-level PWM outputs for interface to external high power drivers
• Fast enhanced PWM for excellent load transient performance
• Active current balancing between all output phases
• Built in power-good/crowbar blanking supports on-the-fly (OTF) VID code changes
• Digitally programmable 0.375V to 1.6V output supports both VR11 and VR11.1 specifications
• Programmable short-circuit protection with programmable latchoff delay
• Supports active low PSI – power saving mode during light loads
• Input voltage range from 1.7 to 24V
• QFN40 package, operating ambient temperature range from -40 to +125°C