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參數(shù)資料
| 型號： | UC184XA |
| 廠商： | Microsemi Corporation |
| 英文描述： | CURRENT MODE PWM CONTROLLER |
| 中文描述： | 電流模式PWM控制器 |
| 文件頁數(shù)： | 6/8頁 |
| 文件大小： | 530K |
| 代理商： | UC184XA |
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.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| UC184XA_05 | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:CURRENT MODEPWM CONTROLER |
| UC184XAY | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:CURRENT MODEPWM CONTROLER |
| UC1851 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Programmable, Off-Line, PWM Controller |
| UC1851J | 制造商:Rochester Electronics LLC 功能描述:PROG OFF-LINE PWM CONT,LTB ENDS 12/31/01 - Bulk |
| UC1851J883B | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Programmable, Off-Line, PWM Controller |
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