Fine Tuning of Digital Control in POL Regulators Optimize Dynamic Response and Minimize Component Count

Each electronic circuit on the printed circuit board (PCB) is designed to operate over a limited range of DC voltage, outside of which circuit operation or performance is not guaranteed. A generalized view of the static voltage and associated tolerance is shown in Figure 1. In order to achieve high speed and low power dissipation, recent microprocessor , DSP and FPGA chips require voltage levels of 1 to 3.3 VDC with a tolerance of as little as ±30 mV. These types of requirements place severe demands upon the power system.