NCP1345中文资料PDF规格书
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NCP1345规格书详情
The NCP1345 is a highly integrated quasi−resonant flyback
controller suitable for designing high−performance off−line USB−PD
and USB Type−C power converters. The included dual−pin VCC
architecture allows direct connection to the aux winding for simplified
VCC management with a reduced parts count and increased
performance.
The NCP1345 also features a precise, primary side based output
current limiting circuit to ensure a constant output current limit
regardless of programmed output voltage, or nameplate output power.
The quasi−resonant (QR) current−mode flyback stage features
proprietary valley−lockout circuitry to ensure stable valley switching
down to the 6th valley, then transitions to frequency foldback mode to
reduce switching losses. As the load decreases further, the NCP1345
enters skip mode to manage the power delivery.
To help ensure converter ruggedness, the NCP1345 implements
several key protective features such as internal brownout detection, a
maximum output current limit regardless of input voltage, a latched
over voltage and NTC−ready overtemperature protection through a
dedicated pin, and line removal detection to safely discharge the X2
capacitors when the line is removed.
Features
• Integrated High−Voltage Startup Circuit with Brownout Detection
• Integrated X2 Capacitor Discharge Capability
• Wide VCCL Range from 8 V to 38 V
• 150 V VCCH Pin for Connection to High−Voltage Aux Winding
• 36.5 V VCC Overvoltage Protection
• Primary Side Based Constant Output Current Limiting
• Abnormal Overcurrent Fault Protection for Winding Short Circuit
Detection
• Internal Temperature Shutdown
• Valley Switching Operation with Valley−Lockout for Noise−Free
Operation
• Rapid Frequency Foldback for Fast Reduction of Switching
Frequency
• Skip Mode with Output Voltage Compensation
• Minimized No Load Power Consumption
• Frequency Jittering for Reduced EMI Signature
• Latching or Auto−Recovery Overload Protection
• Adjustable Overpower Protection
• Fixed/Adjustable Maximum Frequency Clamp
• Fault Pin for Severe Fault Conditions, NTC Compatible for OTP
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
ON/安森美 |
21+ |
XDFN-4 |
56000 |
公司进口原装现货 批量特价支持 |
询价 | ||
ON/安森美 |
22+ |
XDFN-4 |
18000 |
原装正品 |
询价 | ||
ON(安森美) |
23+ |
NA |
8000 |
原厂原装现货订货价格优势终端BOM表可配单提供样品 |
询价 | ||
onsemi |
23+ |
10-SOP |
24568 |
确保原装正品,一站式配单-认准水星电子。 |
询价 | ||
ON |
2020+ |
DFN |
80000 |
只做自己库存,全新原装进口正品假一赔百,可开13%增 |
询价 | ||
ON(安森美) |
23+ |
标准封装 |
8000 |
正规渠道,只有原装! |
询价 | ||
ON/安森美 |
23+ |
XDFN-4 |
50000 |
全新原装正品现货,支持订货 |
询价 | ||
ON |
21+ |
NA |
3000 |
进口原装 假一罚十 现货 |
询价 | ||
ON(安森美) |
22+ |
NA |
8000 |
原厂原装现货 |
询价 | ||
ON |
22+ |
DFN |
28600 |
只做原装正品现货假一赔十一级代理 |
询价 |