TPS92310
www.ti.com SNVS792 – FEBRUARY 2012 TPS92310 Off-Line Primary Side Sensing Controller With PFC
Check for Samples: TPS92310 FEATURES 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
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. Also, minimized EMI and switching
loss is achieved with quasi-resonant switching. Other
supervisory features of the TPS92310 include cycleby-cycle primary side inductor current limit, VCC
under-voltage lockout, output over-voltage protection
and thermal shutdown. The TPS92310 is available in
the VSSOP-10 package. 1 2 Regulates LED Current Without Secondary …
