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參數(shù)資料
| 型號(hào)： | UCC28517N |
| 廠商： | Texas Instruments, Inc. |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | ADVANCED PFC/PWM COMBINATION CONTROLLERS |
| 中文描述： | 先進(jìn)PFC / PWM組合控制器 |
| 文件頁數(shù)： | 12/39頁 |
| 文件大小： | 725K |
| 代理商： | UCC28517N |
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SLUS517B DECEMBER 2002 REVISED AUGUST 2004
12
www.ti.com
APPLICATION INFORMATION
The UCC28510 series of combination controllers include a power factor correction (PFC) controller that is
synchronized with a pulse width modulator (PWM) controller integrated into one chip. The PFC controller has
all of the features for an average current mode controlled PFC. The PWM controller has all of the features for
an isolated peak current program mode controlled converter. The two controllers are synchronized at a fixed
frequency so that the PFC controller is leading edge modulated (LEM) and the PWM controller is trailing edge
modulated (TEM). The LEM/TEM combination reduces the ripple current in the energy storage capacitor of the
PFC stage. A comparison between the ripple current in the energy storage capacitor with traditional TEM/TEM
modulation versus LEM/TEM modulation is shown in Figure 2.
Q1
Q2
iD1
iQ2
iES
iES= iD1 iQ2
ON
OFF
ON
OFF
ON
OFF
ON
OFF
T
T
TEM/TEM
LEM/TEM
D1
L1
+
–
DAC
VAC
L2
iES
LOAD
CES
Q1
Q2
D2
iD1
iQ2
iIN
iL
COUT
PFC BOOST CONVERTER
BUCK DERIVED CONVERTER
Figure 2. Equivalent PFC+PWM Power Supply System and the Comparison of the Energy Storage
Capacitor Current for Traditional TEM/TEM with LEM/TEM Controllers.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UCC28517NE4 | 功能描述:功率因數(shù)校正 IC Advanced PFC/PWM Comb Controller RoHS:否 制造商:Fairchild Semiconductor 開關(guān)頻率:300 KHz 最大功率耗散: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel |
| UCC28521 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:ADVANCED PFC/PWW COMBINATION CONTROLLER WITH TRAILING-EDGE/TRAILING-EDGE MODULATION |
| UCC28521DW | 功能描述:功率因數(shù)校正 IC PWM/PFC Controller w/TEM/TEM Modulation RoHS:否 制造商:Fairchild Semiconductor 開關(guān)頻率:300 KHz 最大功率耗散: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel |
| UCC28521DWG4 | 功能描述:功率因數(shù)校正 IC Adv PWM/PFC Combo Cntrlr RoHS:否 制造商:Fairchild Semiconductor 開關(guān)頻率:300 KHz 最大功率耗散: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel |
| UCC28521DWR | 功能描述:功率因數(shù)校正 IC PWM/PFC Controller w/TEM/TEM Modulation RoHS:否 制造商:Fairchild Semiconductor 開關(guān)頻率:300 KHz 最大功率耗散: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel |
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