NCP1360 Low Power Offline Constant Current & Constant Voltage Primary Side PWM Current-Mode Controller Product Overview
◆The NCP1360 offers a new solution targeting output power levels from a few watts up to 20 W in a universal-mains flyback application.
◆Thanks to a novel method this new controller saves the secondary feedback circuitry (opto-coupler and TL431 reference) while achieving excellent line and load regulation.
◆The NCP1360 operates in valley lockout quasi-resonant peak current mode control mode at high load to provide high efficiency.When the power on the secondary side starts to diminish, the controller automatically adjusts the duty-cycle then at lower load the controller enters in pulse frequency modulation at fixed peak current with a valley switching detection. This technique allows keeping the output regulation with tiny dummy load. Valley lockout at the first 4 valleys prevent valley jumping operation and then a valley switching at lower load provides high efficiency.
◆Features
■No frequency clamp, 80 or 110 kHz Maximum Switching Frequency
■Quasi-Resonant with Valley Switching Operation
■Fixed Peak Current & Deep frequency foldback @ light load operation
■Cycle by Cycle peak current limit
■Wide Operation VCC range (up to 28 V)
■Internal Temperature Shutdown
■CS & Vs/ZCD pin Short and Open Protection
■Constant Current Primary-side feedback eliminates secondary controller
■±10% Current Regulation
■Build-in soft-sart
◆Benefits
■Prevents high frequency interference with a touchscreen
■Offers high efficiency operation
■Low consumption at light load
■Safe operation
■Design flexibility
■Safe operation
■Safe operation
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NCP1360 、 TL431 、 NCP1360AABCYSNT1G 、 NCP1360BABCYSNT1G 、 NCP1360BACCYSNT1G 、 NCP1360BBCCYSNT1G 、 NCP1360BCCCYSNT1G |
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Datasheet |
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Please see the document for details |
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TSOP-6 |
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English Chinese Chinese and English Japanese |
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8/11/2019 |
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170 KB |
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