AN3303

SRK2000 main characteristics

Doc ID 18164 Rev 2

11/27

Figure 9.

Conduction time sensing during normal operation

Once in sleep mode, gate driving is re-enabled when body diode conduction time of both

MOSFETs exceeds 60 % of the half-cycle. Figure 10 shows details of time measuring for

sleep mode exiting.

Figure 10.

Conduction time sensing under sleep mode

Also in this case the decision is made considering the measurement on eight consecutive

switching cycles.

Furthermore, after each sleep mode entering/exiting transition, the timing is ignored for a

certain number of cycles, to let the resulting transient in the output current fade out; then the