Primary-Side Push-Pull Oscillator with Dead-Time Control ...
UCC28089SLUS623A -- SEPTEMBER 2004 -- REVISED AUGUST 2006PRIMARY- side Push-Pull OSCILLATORWITH Dead-Time Oscillator with ProgrammableDeadtimeDHigh-Current Totem-Pole Dual Output StageDrives Push-Pull Configuration with 1-A Sinkand Source CapabilityDCan be Used in Push-Pull , Half-Bridge, orFull-Bridge TopologiesDOscillator Synchronization OutputDLow Start-Up Current of 130 Run CurrentDOver-Current ShutdownDDigitally Controlled Over-Current/RetryFeatureDUndervoltage Lockout with HysteresisAPPLICATIONSDHigh Efficiency Cascaded ConvertersDInvertersDElectronic BallastsDUninterruptable Power Supplies (UPS)DAC or DC LinksDESCRIPTIONThe UCC28089 is a versatile BiCMOS controller fordc-to-dc or off-line fixed-frequency switching powersupplies. The UCC28089 has dual alternating outputstages in dual-alternating Push-Pull configuration. Bothoutputs switch at half the Oscillator frequency using atoggleflip-flopanddutycycleislimitedtol essthan50%.
UCC28089 SLUS623A -- SEPTEMBER 2004 -- REVISED AUGUST 2006 PRIMARY-SIDE PUSH-PULL OSCILLATOR WITH DEAD-TIME CONTROL www.ti.com 1 FEATURES D Push-Pull Oscillator With Programmable Deadtime D High-Current Totem-Pole Dual Output Stage …
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