TPS92310 Datasheet, PDF (1/19 Pages) Texas Instruments – Off-Line Primary Side Sensing Controller with PFC

TPS92310
February 23, 2012
Off-Line Primary Side Sensing Controller with PFC
General Description
The TPS92310 is an off-line controller specifically designed
to drive high power LEDs for lighting applications. With the
primary side sensing, constant on-time and quasi-resonant
switching techniques, the TPS92310 application circuit gives
high Power Factor, good EMI performance and high system
efficiency. Also, using this device, low external component
count application solutions can be designed easily. Power
Factor Correction is inherent if the TPS92310 is operated in
the constant on-time mode with an adaptive algorithm. The
control algorithm of TPS92310 adjusts the on-time with ref-
erence to the primary side inductor peak current and sec-
ondary side inductor discharge time dynamically, the re-
sponse time of which is set by an external capacitor. Also,
minimized EMI and switching loss is achieved with quasi-res-
onant switching. Other supervisory features of the TPS92310
include cycle-by-cycle primary side inductor current limit,
VCC under-voltage lockout, output over-voltage protection
and thermal shutdown. The TPS92310 is available in the
MSOP-10 package.
Features
■ ^{Regulates LED current without secondary side sensing}
■ ^{Adaptive ON-time control with inherent PFC}
■ ^{Critical-Conduction-Mode (CRM) with Zero-Current}
Detection (ZCD) for valley switching
■ ^{Programmable switch turn ON delay}
■ ^{Programmable Constant ON-Time (COT) and Peak}
Current Control
■ ^{Over-temperature protection}
Applications
■ ^{LED Lamps: A19 (E26/27, E14), PAR30/38, GU10}
■ ^{Solid State Lighting}
Typical Application
FIGURE 1.
© 2012 Texas Instruments Incorporated 301808 SNVS792
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