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How does it work with Sync Rec?. Understanding T1 Currents. Interval 1 QA, QD, QF on QB, QC, QE are off Energy delivered from primary. -dIL OUT /2. Understanding T1 Currents. Between Interval 1 and 2 QD turns off and QDd LC Tanks QC’s body diode will conduct. -dIL OUT /2.
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Understanding T1 Currents • Interval 1 • QA, QD, QF on • QB, QC, QE are off • Energy delivered from primary -dILOUT/2
Understanding T1 Currents • Between Interval 1 and 2 • QD turns off and QDd LC Tanks • QC’s body diode will conduct -dILOUT/2
Understanding T1 Currents • Interval 2 • QC and QE turn on • QC body diode stops conducting -dILOUT/2
Misconception • Interval 2 • Misconception • QE and QF equally split current • When T1 Primary Shorted by QA and QC • Turns ratio forces most of I through QF • ΔILOUT is forced/divided through both windings -dILOUT/2
Understanding T1 Currents • Between Interval 2 and 3 • QA and QF turn off and QBd LC Tanks • QB’s body diode will conduct
Understanding T1 Currents • Interval 3 • QB turns on • Energy delivered from primary • QB’s body diode stops conducting
Understanding T1 Currents • Between Interval 3 and 4 • QC turns off and QDd LC Tanks • QD’s body diode will conduct
Understanding T1 Currents • Interval 4 • QD and QF turn on • QD body diode stops conducting
Understanding T1 Currents • Between Interval 4 and 1 • QB turns off and QBd LC Tanks • QA’s body diode will conduct • The cycle will start all over again