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(yè)數(shù)： 2/39頁(yè)
文件大?。?/td> 725K
代理商： UCC28517N
SLUS517B DECEMBER 2002 REVISED AUGUST 2004
2
www.ti.com
DESCRIPTION (CONTINUED)
The transient response of the circuit is enhanced by allowing a much faster charge/discharge of the voltage
amplifier output capacitance when the output voltage falls outside a certain regulation window. A number of
additional features such as UVLO circuit with selectable hysteresis levels, an accurate reference voltage for the
voltage amplifier, zero power detect, OVP/enable, peak current limit, power limiting, high-current output gate
driver characterize the PFC section.
The PWM section features peak current mode control (with a ramp signal available to add slope compensation),
programmable soft-start, accurate maximum duty cycle clamp, peak current limit and high-current output gate
driver. The oscillator for the combination controller is available in two versions. In UCC28510, UCC28511,
UCC28512, and UCC28513, the PWM and the PFC circuits are switched at the same frequency. In the
UCC28514, UCC28515, UCC28516, and UCC28517, the PWM stage frequency is twice that of the PFC
frequency. The PWM stage is suppressed until the PFC output has reached 90% of its programmed value during
startup. During line dropout and turn off, the device allows the PWM stage to operate until the PFC output has
dropped to 47% (UCC28512, UCC28513, UCC28516, and UCC28517) or 71% (UCC28510, UCC28511,
UCC28514, and UCC28515) of its nominal value. See available options table on page 1 for a summary of
options.
The UCC28510 family also features leading-edge modulation for the PFC stage and trailing-edge modulation
for the PWM stage in order to reduce the ripple current in the boost output capacitor. The current amplifier
implementation associated with this scheme also results in better noise immunity.
Available in 20-pin N and DW packages.
SIMPLIFIED APPLICATION DIAGRAM
12
3
16
18
10
5
7
2
UCC2851X
GT1
VSENSE
ISENSE1
IAC
GT2
VREF
VERR
RT
+
D1
VAC
15
14
13
11
17
19
20
PWRGND
VAOUT
1
6
VFF
MOUT
CAOUT
PKLMT
SS2
8
9
D_MAX
CT_BUFF
GND
ISENSE2
VCC
REF
PRIMARY
SECONDARY
+
VOUT
+
4
REF
BIAS
RECT
+
PWM
VLOOP
Z
Z
Z
相關(guān)PDF資料
PDF描述
UCC2882-1 Average Current Mode Synchronous Controller With 5-Bit DAC
UCC2882 Average Current Mode Synchronous Controller With 5-Bit DAC
UCC2882- Average Current Mode Synchronous Controller With 5-Bit DAC
UCC2975TRPW Precision 500 mA regulators
UCC2977 Multi-Topology Piezoelectric Transformer Controller
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
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*