Datasheet Texas Instruments UCC24636DBVT — 数据表

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Design UCC24636
SLUSCG2A – MARCH 2016 – REVISED MARCH 2016 UCC24636 Synchronous Rectifier (SR) Controller
With Ultra-Low Standby Current
1 Features 3 Description The UCC24636 SR is a compact, 6-pin secondaryside synchronous rectifier MOSFET controller and
driver for high efficiency Flyback converters operating
in Discontinuous (DCM) and Transition mode (TM).
Unlike traditional SR controllers which measure the
SR MOSFET drain voltage, UCC24636 implements a
volt-second balance control method to determine the
turn off transition of the SR MOSFET; hence, SR
conduction time is independent of the MOSFET
RDSON, parasitic inductance or ringing allowing
flexibility to designers in component slelction and
PCB layout. This control method enables maximum
SR conduction time and highest rectifier efficiency for
a given MOSFET. 1 Secondary-Side SR Controller Optimized for 5-V
to 24-V Output Discontinuous/Transition Mode …