參數資料
型號: UC2849DWTR
英文描述: Current-Mode SMPS Controller
中文描述: 電流模式開關電源控制器
文件頁數: 6/8頁
文件大?。?/td> 530K
代理商: UC2849DWTR
6
UC1842A/3A/4A/5A
UC2842A/3A/4A/5A
APPLICATIONS DATA (cont.)
Oscillator Section
Open-Loop Laboratory Test Fixture
Oscillator Frequency vs Timing Resistance
Maximum Duty Cycle vs Timing Resistor
High peak currents associated with capacitive loads necessi-
tate careful grounding techniques. Timing and bypass capaci-
tors should be connected close to pin 5 in a single point
ground. The transistor and 5k potentiometer are used to sam-
ple the oscillator waveform and apply an adjustable ramp to
pin 3.
Slope Compensation
A fraction of the oscillator ramp can be resistively
summed with the current sense signal to provide slope
compensation for converters requiring duty cycles over
50%.
Note that capacitor, C, forms a filter with R2 to suppress
the leading edge switch spikes.
相關PDF資料
PDF描述
UC2849J Analog IC
UC2849N Omnifet II: fully autoprotected Power MOSFET
UC2849PW Current-Mode SMPS Controller
UC2849PWTR Current-Mode SMPS Controller
UC2849Q Current-Mode SMPS Controller
相關代理商/技術參數
參數描述
UC2849DWTRG4 功能描述:低壓差控制器 - LDO Sec Side Avg Current Mode RoHS:否 制造商:Micrel 最大輸入電壓:5.5 V 輸出電壓:Adjustable 輸出電流:10 mA 負載調節(jié): 輸出類型:Adjustable, Fixed 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:SOT-23-6
UC2849J 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC
UC2849N 功能描述:初級與次級側 PWM 控制器 Sec Side Avg Current Mode RoHS:否 制造商:ON Semiconductor 輸出端數量:1 開關頻率:250 KHz 工作電源電壓:- 0.3 V to + 28 V 最大工作溫度:+ 85 C 最小工作溫度:- 5 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Reel
UC2849NG4 功能描述:初級與次級側 PWM 控制器 Sec Side Avg Current Mode RoHS:否 制造商:ON Semiconductor 輸出端數量:1 開關頻率:250 KHz 工作電源電壓:- 0.3 V to + 28 V 最大工作溫度:+ 85 C 最小工作溫度:- 5 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Reel
UC2849PW 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Current-Mode SMPS Controller