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ADP3207

ON Semiconductor
Part Number ADP3207
Manufacturer ON Semiconductor
Description 7-Bit Programmable Multiphase Mobile CPU Synchronous Buck Controller
Published Jan 16, 2016
Detailed Description 7-Bit Programmable Multiphase Mobile CPU Synchronous Buck Controller ADP3207 FEATURES 1-, 2-, or 3-phase operation at u...
Datasheet PDF File ADP3207 PDF File

ADP3207
ADP3207

Overview
7-Bit Programmable Multiphase Mobile CPU Synchronous Buck Controller ADP3207 FEATURES 1-, 2-, or 3-phase operation at up to 750 kHz per phase ±8 mV worst-case differential sensing error over temperature Interleaved PWM outputs for driving external high power MOSFET drivers 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 on-the-fly 7-bit digitally programmable 0.
3 V to 1.
5 V output Overload and short-circuit protection with programmable latch-off delay Built-in clock enable output delays CPU clock until CPU supply voltage stabilizes APPLICATIONS Notebook power supplies for next generation Intel® processors GENERAL DESCRIPTION The ADP32071 is a high efficiency, multiphase, 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 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.
The ADP3207 uses a multimode architecture to drive the logiclevel PWM outputs at a programmable switching frequency that can be optimized depending on the output current requirement.
The part switches between multiphase and single-phase operation to maximize its effectiveness under all load conditions.
In addition, the ADP3207 includes a programmable slope function to adjust the output voltage as a function of the load current.
As a result, it is always best positioned for a system transient.
1 Patent 6,683,441.
FUNCTIONAL BLOCK DIA...


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