As shown in the previous two examples, the common reason for using DVS is to improve efficiency or reduce losses. However, there are other interesting applications. Many systems require a precisely regulated supply voltage. For the voltage range shown in Fig. 3, a 1.2 V core voltage can be used. The voltage may be 1.2 V ± 10%. In this example, the voltage is kept constant under static load and dynamic load change. If the feedback control is set in the middle of the allowable range, half of the range is applicable to the static error source and also to the dynamic voltage change after the load transient. There is a trick, that is, slightly increase the output voltage at low load and slightly decrease the output voltage at high load. In the case of high load, sometimes lower load will be adopted, and small voltage overshoot will generally occur at this time. This voltage overshoot can be kept within the allowable range by slightly reducing the set point voltage of the high load, as shown in Fig. 3. The left side is high load and the right side is low load.