TPS92310DGS Datasheet, PDF (1/23 Pages) Texas Instruments – TPS92310 Off-Line Primary Side Sensing Controller With PFC

TPS92310
www.ti.com
SNVS792 – FEBRUARY 2012
TPS92310 Off-Line Primary Side Sensing Controller With PFC
Check for Samples: TPS92310
FEATURES
1
•2 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
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 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 VSSOP-10 package.
Typical Application
D₃
LED Stack
D₁
AC
IN
C_IN
R₁
*Z₁
T₁
L_P
L_S
C_OUT
V_LAUX
R₄
D₂
R₂
L_AUX
*Optional
C_VCC
D_ZCD
C_COMP
R_DLY
C_ZCD
R₃
TPS92310
VCC
ZCD
AGND
COMP
DLY
GATE
ISNS
PGND
MODE1
MODE2
Y₁
V_SW
Q₁
R_ISNS
GND
Figure 1.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2012, Texas Instruments Incorporated