NCP81040

NCP81040 Programmable Multi-Phase Synchronous Buck Converter with I2C Interface The NCP81040 is an integrated power control IC 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. 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. The NCP81040 can be programmed to provide 2−, 3−, or 4−phase operation, allowing for the construction of up to four complementary buck−switching stages. The NCP81040 supports PSI, which is a Power Save Mode. The NCP81040 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. Key system performance data, such as CPU current, CPU voltage, and power and fault conditions can also be read back over the I2C from the NCP81040. The NCP81040 operates over the industrial temperature range of −40°C to +125°C and is available in a 40 Lead QFN package. Features Selectable 2−, 3−, or 4−Phase Operation at Up to 1.5 MHz per Phase I2C Interface − Enables Digital Programmability of Set Points and Read−back of Monitored Values Logic−Level PWM Output...