SLVSA67F February 2010 – April 2020 TPS62400-Q1 , TPS62402-Q1 , TPS62404-Q1 , TPS62405-Q1
UNLESS OTHERWISE NOTED, this document contains PRODUCTION DATA.
This feature reduces the voltage under- and overshoots at load steps from light to heavy load and from heavy to light. Power-save-mode operation activates dynamic voltage positioning and provides more headroom for both the voltage drop at a load step and the voltage increase when a load is switched off, which improves load-transient behavior.
At light loads, in which the converter operates in PFM mode, the output voltage regulation is typically 1% higher than the nominal value. In case of a load transient from light load to heavy load, the output voltage drops until it reaches the skip comparator low threshold set to 2% below the nominal value and enters PWM mode. During a load transition from heavy load to light load, the device also minimizes voltage overshoot because of active regulation turning on the N-channel switch.