NCP1612B2中文資料安森美半導(dǎo)體數(shù)據(jù)手冊PDF規(guī)格書
NCP1612B2規(guī)格書詳情
The NCP1612 is designed to drive PFC boost stages based on an innovative Current Controlled Frequency Fold-back (CCFF) method. In this mode, the circuit classically operates in Critical conduction Mode (CrM) when the inductor current exceeds a programmable value. When the current is below this preset level, the NCP1612 linearly decays the frequency down to about 20 kHz when the current is null. CCFF maximizes the efficiency at both nominal and light load. In particular, the stand-by losses are reduced to a minimum.
General Features
? Near-unity Power Factor
? Critical Conduction Mode (CrM)
? Current Controlled Frequency Fold-back (CCFF): Low Frequency Operation is Forced at Low Current Levels
? On-time Modulation to Maintain a Proper Current Shaping in CCFF Mode
? Skip Mode Near the Line Zero Crossing
? Fast Line/Load Transient Compensation (Dynamic Response Enhancer)
? Valley Turn On
? High Drive Capability: ?500 mA/+800 mA
? VCC Range: from 9.5 V to 35 V
? Low Start-up Consumption
? Six Versions: NCP1612A, B, A1, A2, A3 and B2 (see Table 1)
? Line Range Detection
? pfcOK Signal
? This is a Pb-Free Device
Safety Features
? Separate Pin for Fast Over-voltage Protection (FOVP) for Redundancy
? Soft Over-voltage Protection
? Brown-out Detection
? Soft-start for Smooth Start-up Operation (A, A1, A2 and A3 Versions)
? Over Current Limitation
? Disable Protection if the Feedback is Not Connected
? Thermal Shutdown
? Latched Off Capability
? Low Duty-cycle Operation if the Bypass Diode is shorted
? Open Ground Pin Fault Monitoring
? Saturated Inductor Protection
? Detailed Safety Testing Analysis (Refer to Application Note AND9079/D)
Typical Applications
? PC Power Supplies
? All Off Line Appliances Requiring Power Factor Correction
| 供應(yīng)商 | 型號 | 品牌 | 批號 | 封裝 | 庫存 | 備注 | 價(jià)格 |
|---|---|---|---|---|---|---|---|
PTIF |
2310+ |
SOP/DIP |
3699 |
優(yōu)勢代理渠道,原裝現(xiàn)貨,可全系列訂貨 |
詢價(jià) | ||
ON(安森美) |
2405+ |
Original |
50000 |
只做原裝優(yōu)勢現(xiàn)貨庫存,渠道可追溯 |
詢價(jià) | ||
ON Semiconductor |
2021+ |
SOIC |
57500 |
科研單位合格供應(yīng)商!現(xiàn)貨庫存 |
詢價(jià) | ||
三年內(nèi) |
1983 |
只做原裝正品 |
詢價(jià) | ||||
ON |
21+ |
NA |
3000 |
進(jìn)口原裝 假一罰十 現(xiàn)貨 |
詢價(jià) | ||
ON/安森美 |
23+ |
SOP10 |
50000 |
全新原裝正品現(xiàn)貨,支持訂貨 |
詢價(jià) | ||
ON |
SOP10 |
893993 |
集團(tuán)化配單-有更多數(shù)量-免費(fèi)送樣-原包裝正品現(xiàn)貨-正規(guī) |
詢價(jià) | |||
ON Semiconductor |
22+ |
10SOIC |
9000 |
原廠渠道,現(xiàn)貨配單 |
詢價(jià) | ||
ON Semiconductor |
21+ |
10SOIC |
13880 |
公司只售原裝,支持實(shí)單 |
詢價(jià) | ||
ON |
21+ |
NA |
3000 |
進(jìn)口原裝 假一罰十 現(xiàn)貨 |
詢價(jià) |
