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Controllers | ADP3293

Synchronous Buck Controller, 8-bit, Programmable, 2-3 Phase

Obsolete

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Overview

The ADP3293 is a highly efficient, multi-phase, synchronous buck switching regulator controller optimized for converting a 12 V main supply voltage into the core supply voltage of high performance Intel processors. It uses an internal 8-bit DAC to read a voltage identification (VID) code directly from the processor, to set the output voltage between 0.5 V and 1.6 V. This device uses a multi-mode control architecture to drive the logic-level PWM outputs. The switching frequency can be programmed according to VR size and efficiency. The chip can provide 2- or 3-phase operation, allowing for the construction of up to four complementary buck switching stages. The ADP3293 also includes programmable no load offset and load line slope setting function that adjusts the output voltage as a function of the load current, optimally positioning it for a system transient. The ADP3293 also provides accurate and reliable short-circuit protection, adjustable current limit, and a delayed power-good output that accommodates on-the-fly output voltage changes requested by the CPU.

  • Intel Desktop/Server PC power supply
  • VRM module

  • Desktop/server processor
  • GPU

  • Selectable 2-,or 3-Phase operation at up to 1MHz
  • +/-7mV worse-case differential sensing error
  • Logic-level PWM outputs for interface to external high power drivers
  • Fast-Enhanced PWM Flexmode
  • TRDET function
  • Active current balancing
  • Build-in Power-Good/Crowbar blanking
  • Digitally programmable 0.5V to 1.6V output
  • Programmable Over-Current protection with programmable latch-off delay

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ADP3293JCPZ-RL

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Obsolete

CAD Model

Pb

A

H

P

LFCSP-40

932AC

3

260

REEL

2500

N

Step-Down

2/3

Current/Voltage Mode

6

14.5

100 - 1000

Price N/A

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