Datasheet Texas Instruments TPS92314D/NOPB — 数据表

TPS92314
TPS92314A
www.ti.com SNVS856B – JUNE 2012 – REVISED MAY 2013 Off-Line Primary Side Sensing Controller with PFC
Check for Samples: TPS92314, TPS92314A FEATURES DESCRIPTION The TPS92314/14A is an off-line controller
specifically designed to drive high power LEDs for
lighting applications. Features include adaptive
constant on-time control and quasi-resonant
switching. Resonant switching allows for a reduced
EMI signature and increased system efficiency. Thus,
the device introduces a low external parts count and
high level of integration. The control algorithm of
TPS92314/14A adjusts the on time with reference to
the primary side inductor peak current and secondary
side inductor discharge time dynamically, the
response time of which is set by an external
capacitor. 1 2 Regulates LED Current Without Secondary
Side Sensing
Adaptive ON-time Control with Inherent PFC
Critical-Conduction-Mode (CRM) with ZeroCurrent Detection (ZCD) for Valley Switching
Programmable Switch Turn ON Delay
Programmable Constant ON-Time (COT)
Over Current Limit Options:
– TPS92314: 1.15V …