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NCP1365XS1GEVB: Low Power Offline Constant Current & Constant Voltage Primary Side PWM Current-Mode Controller with High Voltage Startup Current Source Evaluation Board

The NCP1365XS1GEVB Evaluation Board is designed to efficiently evaluate the NCP1365, which 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 eliminates the need for a secondary feedback circuitry (typically an opto-coupler and TL431 reference) while achieving excellent line and load regulation. The NCP1365 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.
Evaluation/Development Tool Information
Product Status Compliance Short Description Parts Used Action
NCP1365XS1GEVB Active
Pb-free
Low Power Offline Constant Current & Constant Voltage Primary Side PWM Current-Mode Controller with High Voltage Startup Current Source Evaluation Board NCP1365AABCYDR2G NCP1365BABCYDR2G
Technical Documents
Type Document Title Document ID/Size Rev
Eval Board: BOM NCP1365XS1GEVB Bill Of Materials (ROHS Compliant) NCP1365XS1GEVB_BOM_ROHS.pdf - 61 KB  0 
Eval Board: Gerber NCP1365XS1GEVB Gerber Layout Files (Zip Format) NCP1365XS1GEVB_GERBER.zip - 28 KB  0 
Eval Board: Test Procedure NCP1365XS1GEVB Test Procedure NCP1365XS1GEVB_TEST_PROCEDURE.pdf - 155 KB  0 
Eval Board: Schematic NCP1365XS1GEVBGEVB Schematic NCP1365XS1GEVBGEVB_SCHEMATIC.pdf - 81 KB  0 
Video Low Power Offline Constant Current & Constant Voltage Primary Side PWM Current-Mode Controller - NCP1365XS1GEVB WVD17551/D   
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Low Power Offline Constant Current & Constant Voltage Primary Side PWM Current-Mode Controller - NCP1365XS1GEVB
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