NCP4354AADAPGEVB: 65 W Adapter Off-Mode Controller Demonstration Evaluation Board

The NCP4353 and NCP4354 are secondary side SMPS controllers designed for use in applications which require extremely low no load power consumption. The device is capable of detecting 'no load' conditions and entering the power supply into a low consumption OFF mode. During OFF mode, the primary side controller is turned off and energy is provided by the output capacitors thus eliminating the power consumption required to maintain regulation. During OFF mode, the output voltage relaxes and is allowed to decrease to an adjustable level. Once more energy is required, the NCP4353 or NCP4354 automatically restarts the primary side controller.During normal power supply operation, the devices provide integrated voltage feedback regulation, replacing the need for a shunt regulator. The A versions include a current regulation loop in addition to voltage regulation. Feedback control as well as ONOFF signal can be provided with only one optocoupler.The NCP4354 includes a LED driver pin implemented with an open drain MOSFET driven by a 1 kHz square wave with a 12.5% duty cycle for indication purpose. The NCP4354 is available in SOIC-8 package and the NCP4353 is available in TSOP-6.

Evaluation/Development Tool Information

Product	Status	Compliance	Short Description	Parts Used
NCP4354AADAPGEVB	Active	Pb-free	65 W Adapter Off-Mode Controller Demonstration Evaluation Board	NCP1246BD065R2G NCP4354ADR2G

Technical Documents

Type	Document Title	Document ID/Size	Rev
Eval Boards	65 W Off-Line Adapter Featuring Very Low No-Load Power Consumption Evaluation Board User's Manual	EVBUM2138/D - 746.0 KB	0
Eval Board: BOM	NCP4354AADAPGEVB Bill of Materials ROHS Compliant	NCP4354AADAPGEVB_BOM_ROHS.PDF - 279.0 KB	0
Eval Board: Gerber	NCP4354AADAPGEVB Gerber Layout Files (Zip Format)	NCP4354AADAPGEVB_GERBER.ZIP - 2900 KB	1
Eval Board: Schematic	NCP4354AADAPGEVB Schematic	NCP4354AADAPGEVB_SCHEMATIC.PDF - 94.0 KB	0
Eval Board: Test Procedure	NCP4354AADAPGEVB Test Procedure	NCP4354AADAPGEVB_TEST_PROCEDURE.PDF - 83.0 KB	0
Video	Standby Power Adapter Solutions with the NCP4354AADAPGEVB Evaluation Board	TND6069/D	1