Intel DZ87KLT-75K Motherboard
Voltage Regulator
Contents
The CPU voltage regulator circuit of the Intel DZ87KLT-75K has eight phases for the CPU, controlled by an IR3563B chip, which uses a digital design. It is important to keep in mind that, while there are competing products with 12 phases, some of them use a six-phase controller chip, doubling the number of phases to 12 by using phase-doubler chips.
Each of the phases is driven by an IR3553 chip, which combines the three required transistors (“driver,” “high side,” and “low side”) in a single integrated circuit.
Figure 11: Voltage regulator circuit
The portrayed motherboard comes with a series of LEDs for you to monitor the use of the phases.
Figure 12: Phase-monitoring LEDs
The Intel DZ87KLT-75K uses solid capacitors and ferrite-core coils. If you want to learn more about the voltage regulator circuit, please read our tutorial on the subject.
