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參數(shù)資料
| 型號： | NCP1377 |
| 廠商： | ON SEMICONDUCTOR |
| 英文描述： | PWM Current-Mode Controller for Free-Running Quasi-Resonant Operation |
| 中文描述： | PWM電流模式控制器自由運行準諧振操作 |
| 文件頁數(shù)： | 1/16頁 |
| 文件大?。?/td> | 165K |
| 代理商： | NCP1377 |
Semiconductor Components Industries, LLC, 2004
October, 2004 Rev. 1
1
Publication Order Number:
NCP1377/D
NCP1377, NCP1377B
PWM CurrentMode
Controller for FreeRunning
QuasiResonant Operation
The NCP1377 combines a true current mode modulator and a
demagnetization detector which ensures full borderline/critical
Conduction Mode in any load/line conditions together with
minimum drain voltage switching (QuasiResonant operation). Due
to its inherent skip cycle capability, the controller enters burst mode
as soon as the power demand falls below a predetermined level. As
this happens at low peak current, no audible noise can be heard. For
NCP1377, an internal 8.0 s timer prevents the freerun frequency to
exceed 100 kHz (therefore below the 150 kHz CISPR22 EMI
starting limit), while the skip adjustment capability lets the user
select the frequency at which the burst foldback takes place. For
NC1377B, the internal timer duration is reduced to 3.0 s to allow
operation at higher frequencies (up to 300 kHz).
The transformer core reset detection is done through an auxiliary
winding which, brought via a dedicated pin, also enables fast
Over Voltage Protection (OVP). Once an OVP has been detected, the
IC permanently latches off. The 1377 features a sampling time of
4.5 s whereas it is 1.5 s for the B version.
The NCP1377 also features an efficient protective circuitries
which, in presence of an overcurrent condition, disables the output
pulses and enters a safe burst mode, trying to restart. Once the default
has gone, the device autorecovers. Finally an internal 1.0 ms
SoftStart eliminates the traditional startup stress.
Features
PbFree Package is Available
FreeRunning Borderline/Critical Mode QuasiResonant Operation
Latched Overvoltage Protection
AutoRecovery ShortCircuit Protection Via UVLO Crossover
External Latch Triggering, e.g. Via Overtemperature Signal
CurrentMode with Adjustable Skip Cycle Capability
Internal 1.0 ms SoftStart
Internal Temperature Shutdown
Internal Leading Edge Blanking
500 mA Peak Current Source/Sink Capability
Under Voltage Lockout Level of 12.5 V (On) and 7.5 V (Min)
Direct Optocoupler Connection
SPICE Models Available for TRANsient Analysis
Internal Minimum T
OFF
Typical Applications
ACDC Adapters for Notebooks, etc.
Offline Battery Chargers
Consumer Electronics (DVD Players, SetTop Boxes, TVs, etc.)
Auxiliary Power Supplies (USB, Appliances, TVs, etc.)
SOIC8
D SUFFIX
CASE 751
PIN CONNECTIONS
Device
Package
SOIC8
Shipping
2500 Tape & Reel
ORDERING INFORMATION
NCP1377DR2
MARKING DIAGRAMS
A
WL, L
YY, Y
WW, W = Work Week
= Assembly Location
= Wafer Lot
= Year
1
8
1
8
PDIP7
P SUFFIX
CASE 626B
1
Dmg
8 HV
2
FB
3
CS
4
GND
6 V
CC
5 Drv
(Top View)
NCP1377BDR2
SOIC8
2500 Tape & Reel
NCP1377P
PDIP7
50 Units/Tube
NCP1377BP
PDIP7
50 Units/Tube
1377B
ALYW
1377
ALYW
1377P
AWL
YYWW
1
1377BP
AWL
YYWW
1
For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
1
8
1
8
NCP1377DR2G
SOIC8
(PbFree)
2500 Tape & Reel
http://onsemi.com
相關PDF資料 |
PDF描述 |
|---|---|
| NCP1377B | PWM Current-Mode Controller for Free-Running Quasi-Resonant Operation |
| NCP1377BDR2 | PWM Current-Mode Controller for Free-Running Quasi-Resonant Operation |
| NCP1377BP | PWM Current-Mode Controller for Free-Running Quasi-Resonant Operation |
| NCP1377P | PWM Current-Mode Controller for Free-Running Quasi-Resonant Operation |
| NCP1377DR2 | PWM Current-Mode Controller for Free-Running Quasi-Resonant Operation |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| NCP1377/D | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:PWM Current -Mode Controller |
| NCP1377_06 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:PWM Current−Mode Controller for Free−Running Quasi−Resonant Operation |
| NCP1377_11 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:PWM Current-Mode Controller for Free-Running Quasi-Resonant Operation |
| NCP1377B | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:PWM Current-Mode Controller for Free-Running Quasi-Resonant Operation |
| NCP1377BD1R2G | 功能描述:電流型 PWM 控制器 ANA PWM CURRNT MODE CNTR RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
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