7-Bit Programmable, Multi-Phase Mobile, CPU Synchronous Buck Controller

The ADP3207C is a high efficiency, multi?phase, synchronous, buck?switching regulator controller optimized for converting notebook battery voltage into the core supply voltage required by high performance Intel processors. The part uses an internal 7?bit Digital?to?Analog Converter (DAC) to read Voltage Identification (VID) code directly from the processor that sets the output voltage. The phase relationship of the output signals can be programmed to provide 1?, 2?, or 3?phase operation, allowing for the construction of up to three interleaved buck?switching stages.

Features

? 1?, 2?, or 3?Phase Operation at Up to 750 kHz per Phase

? 7 mV Worst?Case Differential Sensing Error Overtemperature

? Input Voltage Range of 3.3 V to 22 V

? Interleaved PWM Outputs for Driving External High Power MOSFET Drivers

? Enhanced PWM FlexMode for Excellent Load Transient Performance

? Automatic Power?Saving Modes Maximize Efficiency During Light Load and Deeper Sleep Operation

? Soft Transient Control Reduces Inrush Current and Audio Noise

? Active Current Balancing Between Output Phases

? Independent Current Limit and Load Line Setting Inputs for Additional Design Flexibility

? Built?In, Power?Good Masking Supports VID OTF

? 7?Bit Digitally Programmable 0.3 V to 1.5 V Output

? Overload and Short?Circuit Protection Latchoff Delay

? Built?In, Clock Enable Output Delays CPU Clock Until CPU Supply Voltage Stabilizes

? Current Monitor Output Signals the Total Output Power of the Buck Converter

? This is a Pb?Free Device

Applications

? Notebook Power Supplies for Next Generation Intel? Processors