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NCP1937B2DR2G集成电路(IC)PFC(功率因数校正)规格书PDF中文资料
厂商型号 |
NCP1937B2DR2G |
参数属性 | NCP1937B2DR2G 封装/外壳为20-LSOP(0.154",3.90mm 宽),17 引线;包装为管件;类别为集成电路(IC) > PFC(功率因数校正);产品描述:IC PFC CTRLR CRM 20SOIC |
功能描述 | Combination Power Factor Correction and Quasi-Resonant Flyback Controllers for Adapters |
文件大小 |
1.29878 Mbytes |
页面数量 |
40 页 |
生产厂商 | ON Semiconductor |
企业简称 |
ONSEMI【安森美半导体】 |
中文名称 | 安森美半导体公司官网 |
原厂标识 | |
数据手册 | |
更新时间 | 2024-9-26 12:03:00 |
NCP1937B2DR2G规格书详情
This combination IC integrates power factor correction (PFC) and
quasiïresonant flyback functionality necessary to implement a
compact and highly efficient Switched Mode Power Supply for an
adapter application.
The PFC stage exhibits nearïunity power factor while operating in a
Critical Conduction Mode (CrM) with a maximum frequency clamp.
The circuit incorporates all the features necessary for building a robust
and compact PFC stage while minimizing the number of external
components.
The quasiïresonant currentïmode flyback stage features a
proprietary valleyïlockout circuitry, ensuring stable valley switching.
This system works down to the 4th valley and toggles to a frequency
foldback mode with a minimum frequency clamp beyond the 4th
valley to eliminate audible noise. Skip mode operation allows
excellent efficiency in light load conditions while consuming very low
standby power consumption.
Common General Features
• Wide VCC Range from 9 V to 30 V with Builtïin Overvoltage
Protection
• HighïVoltage Startup Circuit and Active Input Filter Capacitor
Discharge Circuitry for Reduced Standby Power
• Integrated HighïVoltage BrownïOut Detector
• Integrated HighïVoltage Switch Disconnects PFC Feedback Resistor
Divider to Reduce Standby Power
• Fault Input for Severe Fault Conditions, NTC Compatible (Latch and
AutoïRecovery Options)
• 0.5 A / 0.8 A Source / Sink Gate Drivers
• Internal Temperature Shutdown
• Power Savings Mode Reduces Supply Current Consumption to
70 A Enabling Very Low Input Power Applications
PFC Controller Features
• Critical Conduction Mode with Constant On Time Control (Voltage
Mode) and Maximum Frequency Clamp
• Accurate Overvoltage Protection
• BiïLevel LineïDependent Output Voltage
• Fast Line / Load Transient Compensation
• Boost Diode ShortïCircuit Protection
• FeedïForward for Improved Operation across Line and Load
• Adjustable PFC Disable Threshold Based on Output Power
QR Flyback Controller Features
• Valley Switching Operation with Valleyï
Lockout for NoiseïFree Operation
• Frequency Foldback with Minimum Frequency
Clamp for Highest Performance in
Standby Mode
• Minimum Frequency Clamp Eliminates
Audible Noise
• TimerïBased Overload Protection
(Latched or AutoïRecovery options)
• Adjustable Overpower Protection
• Winding and Output Diode ShortïCircuit
Protection
• 4 ms SoftïStart Timer
NCP1937B2DR2G属于集成电路(IC) > PFC(功率因数校正)。安森美半导体公司制造生产的NCP1937B2DR2GPFC(功率因数校正)功率因数校正 (PFC) 是用于调整交流电路中的电压和电流之间的相位角,使之趋近于零的半导体器件。不同模式包括平均电流、边界导通、连续导通、临界导通、电流控制式频率折返、不连续和不连续导通,开关频率从 6 kHz 至 1.7 MHz 可调。
产品属性
更多- 产品编号:
NCP1937B2DR2G
- 制造商:
onsemi
- 类别:
集成电路(IC) > PFC(功率因数校正)
- 包装:
管件
- 模式:
临界传导(CRM)
- 电压 - 供电:
9V ~ 30V
- 工作温度:
-40°C ~ 125°C
- 安装类型:
表面贴装型
- 封装/外壳:
20-LSOP(0.154",3.90mm 宽),17 引线
- 供应商器件封装:
20-SOIC
- 描述:
IC PFC CTRLR CRM 20SOIC
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
ON/安森美 |
23+ |
NA |
10000 |
电子元器件供应原装现货. 优质独立分销。原厂核心渠道 |
询价 | ||
ON/安森美 |
23+ |
NA |
30000 |
房间原装现货特价热卖,有单详谈 |
询价 | ||
ON/安森美 |
23+ |
SOP |
5000 |
原装正品实单必成 |
询价 | ||
ON/安森美 |
22+ |
N/A |
10000 |
现货,原厂原装假一罚十! |
询价 | ||
ON/安森美 |
23+ |
NA/ |
29 |
优势代理渠道,原装正品,可全系列订货开增值税票 |
询价 | ||
三年内 |
1983 |
纳立只做原装正品13590203865 |
询价 | ||||
2322+ |
NA |
33220 |
无敌价格 主销品牌 正规渠道订货 免费送样!!! |
询价 | |||
ON/安森美 |
23+ |
NA |
6000 |
原装正品,优势订货 |
询价 | ||
ON/安森美 |
21+ |
SOP17 |
60000 |
绝对原装正品现货,假一罚十 |
询价 | ||
ON/安森美 |
2021+ |
SOIC-20 |
100500 |
一级代理专营品牌!原装正品,优势现货,长期排单到货 |
询价 |