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Description:5-Bit Programmable 2-Phase Synchronous Buck Controller
Manufacturer:Analog Devices
Datasheet:PDF (292K).
Click here to download *)

The ADP3160 and ADP3167 are highly efficient, dual output, synchronous buck switching regulator controllers optimized for converting a 5 V or 12 V main supply into the core supply voltage required by high-performance processors, such as Pentium 4 and Athlon. The ADP3160 uses an internal 5-bit DAC to read a voltage identification (VID) code directly from the processor that is used to set the output voltage between 1.1 V and 1.85 V. The devices use a current-mode PWM architecture to drive two logiclevel outputs at a programmable switching frequency that can be optimized for VRM size and efficiency. The output signals are 180 degrees out of phase, allowing for the construction of two complementary buck switching stages. These two stages share the dc output current to reduce overall output voltage ripple. An active current balancing function ensures that both phases carry equal portions of the total load current, even under large transient loads, to minimize the size of the inductors. The ADP3160 control

Click here to download ADP3160 Datasheet
Click here to download ADP3160 Datasheet
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