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TPS92314DR 参数 Datasheet PDF下载

TPS92314DR图片预览
型号: TPS92314DR
PDF下载: 下载PDF文件 查看货源
内容描述: 离线式初级侧感应控制器, PFC [Off-Line Primary Side Sensing Controller with PFC]
分类和应用: 功率因数校正控制器
文件页数/大小: 26 页 / 916 K
品牌: TI [ TEXAS INSTRUMENTS ]
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SNVS856B – JUNE 2012 – REVISED MAY 2013
Off-Line Primary Side Sensing Controller with PFC
Check for Samples:
1
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)
Over Current Limit Options:
– TPS92314: 1.15V
– TPS92314A: 2.0V
Advanced Over Current and Over Voltage
Protection
Internal Over-temperature Protection
8-Pin SOIC Package
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.
The over current protection is implemented by a cycle
by cycle current limit of the primary inductor current.
TPS92314A has a higher OCP threshold which is
more suitable for universal line application and
TPS92314 can optimize the system cost. Other
supervisory features of the TPS92314/14A include
VCC over voltage protection and under-voltage
lockout, output LEDs over-voltage protection and
controller thermal shutdown. The TPS92314/14A is
available in 8-pin SOIC package.
spacer
2
APPLICATIONS
Residential LED Lamps: A19 (E26/27, E14),
PAR30/38, GU10
Solid State Lighting
TYPICAL APPLICATION
D
OUT
LED+
Z
SN
T1
R1a
D1
R1b
D
VCC
R
VCC
L
AUX
C
OUTa
C
OUTb
C
IN
D
SN
L
P
L
S
6
±
7
LED
AC
IN
C
VCC
D
ZCD
R
AUX1
R
AUX2
LED-
C
Y1
Q1
TPS92314
GATE
AGND ISNS
ZCD PGND
COMP DLY
C
COMP
R
DLY
VCC
R
FILTER
R
ISNS
1
2
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.
Copyright © 2012–2013, Texas Instruments Incorporated
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.