Figure 6-3 defines the switching timings related to the zero-current detection (ZCD) block, and the device’s drain-to-source current, IN pin signal, and ZCD output signals are demonstrated. ZCD block starts detecting the positive drain-to-source after blanking period defined by t_{ZCD_Blank} measured from the rising edge of IN pin signal. Later, when a positive drain-to-source current is detected, the ZCD pin outputs a pulse-signal with width t_{WD_ZVD}, and the delay time in between positive current detection and ZCD pulse's rising edge is defined as t_{zc_Det} . See the Zero-Current Detection (ZCD) (LMG3427R030 only) section for more information about the ZCD timing parameters.

Figure 6-4 ZCD Timing Specifications