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ADP3193A

ON Semiconductor
Part Number ADP3193A
Manufacturer ON Semiconductor
Published Oct 19, 2022
Description Synchronous Buck Controller
Detailed Description 8-Bit, Programmable, 2- to 3-Phase, Synchronous Buck Controller ADP3193A FEATURES Selectable 2- or 3-phase operation at...
Datasheet PDF File ADP3193A PDF File

ADP3193A
ADP3193A


Overview
8-Bit, Programmable, 2- to 3-Phase, Synchronous Buck Controller ADP3193A FEATURES Selectable 2- or 3-phase operation at up to 1 MHz per phase ±7.
7 mV worst-case differential sensing error over temperature Logic-level PWM outputs for interface to external high power drivers Fast enhanced PWM (FEPWM) flex mode for excellent load transient performance Active current balancing between all output phases Built-in power-good/crowbar blanking supports on-the-fly VID code changes Digitally programmable 0.
5 V to 1.
6 V output supports both VR10.
x and VR11 specifications Programmable short-circuit protection with programmable latch-off delay APPLICATIONS Desktop PC power supplies for Next generation Intel® processors VRM modules GENERAL DESCRIPTION The ADP3193A1 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 8-bit DAC to read a voltage identification (VID) code directly from the processor, which is used to set the output voltage between 0.
5 V and 1.
6 V.
This device 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- or 3-phase operation, allowing for the construction of up to three complementary buck switching stages.
The ADP3193A also includes programmable no load offset and slope functions to adjust the output voltage as a function of the load current, optimally positioning it for a system transient.
The ADP3193A also provides accurate and reliable short-circuit protection, adjustable current limiting, and delayed power-good output that accommodates on-the-fly output voltage changes requested by the CPU.
FUNCTIONAL BLOCK DIAGRAM GND 14 VCC 23 SHUNT REGULATOR UVLO SHUTDOWN 850mV – EN 1 + DAC +150mV – + CSREF + DAC –...


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