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Offline Controllers | NCP1380
概览
The NCP1380 is a high performance device aimed at powering quasi-resonant converters. Capitalizing on a proprietary valley lockout system, the controller shifts gears and reduces the switching frequency as the power loading becomes lighter. This results in a stable operation despite switching events always triggering in the drain-source valley. This system works down to the 4th valley and toggles to a variable frequency mode beyond, ensuring an excellent standby power performance. To improve the safety in the overload situations, the controller includes an Over Power Protection (OPP) circuit which clamps the delivered power at high-line. Safety-wise, a fixed internal timer relies on the feedback voltage to detect a fault. Once the timer elapses, the controller stops and stays latched for option A and C or enters auto-recovery mode for option B and D. Particularly well suited for adapter applications, the controller features a pin to implement either a combined overvoltage / overtemperature protection (version A and B) or a combined brownout / overvoltage protection (version C and D).
- AC-DC adapters for notebooks
- Offline battery chargers
- Auxiliary power supplies (flat TV, appliances)
- Power AC-DC converters for adapters, TVs and set top boxes
- Quasi-resonant peak current mode control operation
- Valley switching operation with valley lockout
- Frequency foldback at light load
- Adjustable overpower protection
- Auto-recovery or latched internal output short circuit protection
- Fixed internal 80 ms timer for short circuit protection
- Combined overvoltage and overtemperature protection (A and B versions)
- Combined overvoltage protection and brownout (C and D versions)
- VCC range operation up to 28 V
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NCP1380ADR2G
Obsolete
Pb
A
H
P
SOIC-8
1
260
REEL
2500
N
Flyback
Current Mode
Variable
Yes
9
Yes
Yes
Yes
28
500 / 800
Price N/A
More Details
NCP1380BDR2G
Active
Pb
A
H
P
SOIC-8
1
260
REEL
2500
Y
Flyback
Current Mode
Variable
Yes
9
Yes
No
Yes
28
500 / 800
$0.4237
More Details
NCP1380CDR2G
Active
Pb
A
H
P
SOIC-8
1
260
REEL
2500
Y
Flyback
Current Mode
Variable
Yes
9
Yes
Yes
Yes
28
500 / 800
$0.4835
More Details
NCP1380DDR2G
Active
Pb
A
H
P
SOIC-8
1
260
REEL
2500
Y
Flyback
Current Mode
Variable
Yes
9
Yes
No
Yes
28
500 / 800
$0.4237
More Details
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