The ADP3168 is a highly efficient, multiphase, synchronous buck switching regulator controller optimized for converting a 12 V main supply into the core supply voltage required by high performance Intel processors. It uses an internal 6-bit DAC to read a voltage identification (VID) code directly from the
processor, which is used to set the output voltage between 0.8375 V and 1.6 V, and uses a multimode PWM architecture to drive the logic-level outputs at a programmable switching frequency that can be optimized for VR size and efficiency. The phase relationship of the output signals can be programmed to provide 2-, 3-, or 4-phase operation, allowing for the construction of up to four complementary buck switching stages.
The ADP3168 also includes programmable no-load offset and slope functions to adjust the output voltage as a function of the load current so that it is always optimally positioned for a system transient. The ADP3168 also provides accurate and reliable short-circuit protection, adjustable current limiting, and
a delayed Power Good output that accommodates on-the-fly output voltage changes requested by the CPU. The device is specified over the commercial temperature range of 0°C to 85°C and is available in a 28-lead TSSOP package.
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Desktop PC power supplies for: Next generation Intel® processors VRM modules
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Selectable 2-, 3-, or 4-phase operation at up to 1 MHz per phase ±10 mV worst-case differential sensing error over temperature Logic-level PWM outputs for interface to external high power drivers Active current balancing between all output phases Built-in Power Good/crowbar blanking supports On-the-fly VID code changes 6-bit digitally programmable 0.8375 V to 1.6 V output Programmable short-circuit protection with programmable latch-off delay
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Parameter Rating
VCC −0.3 V to +15 V
FBRTN −0.3 V to +0.3 V
VID0 to VID5, EN, DELAY, ILIMIT,
CSCOMP, RT, PWM1 to PWM4, COMP −0.3 V to +5.5 V
SW1-SW4 &
Post a Buying Lead
Required Field 
