65W, 19V, Power Supply Evaluation Board

Overview

The NCP1239B65WGEVB is a 65 W, 19V, fixed-frequency current-mode controller Evaluation Board featuring the Dynamic Self-Supply. This function greatly simplifies the design of the auxiliary supply and the Vcc capacitor by activating the internal startup current source to supply the controller during start-up, transients, latch, stand-by etc. With a supply range up to 35 V, the controller hosts a jittered 65 or 100-kHz switching circuitry operated in peak current mode control. When the power on the secondary side starts to decrease, the controller automatically folds back its switching frequency down to minimum level of 26 kHz. As the power further goes down, the part enters skip cycle while limiting the peak current that insures excellent efficiency in light load condition. It features a timer-based fault detection that ensures the detection of overload and an adjustable compensation to help keep the maximum power independent of the input voltage.

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65W, 19V, Power Supply Evaluation Board

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$125

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NCP1239B65WGEVB_TEST_PROCEDURE.pdf

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Eval Board: Test Procedure

125.95 KB

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Eval Board: Test Procedure

July 23, 2015

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NCP1239B65WGEVB_SCHEMATIC.pdf

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Eval Board: Schematic

192.51 KB

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Eval Board: Schematic

July 23, 2015

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NCP1239B65WGEVB_GERBER.zip

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Eval Board: Gerber

593.92 KB

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Eval Board: Gerber

July 23, 2015

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NCP1239B65WGEVB_BOM_ROHS.pdf

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Eval Board: BOM

63.49 KB

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Eval Board: BOM

July 23, 2015

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