Specification	NCP4390DR2G

Applications	Secondary-Side Controller, Synchronous Rectifier
Current - Supply	2.8 mA
Mounting Type	Surface Mount
Operating Temperature [Max]	125 ¯C
Operating Temperature [Min]	-40 °C
Package / Case	16-SOIC
Package / Case [x]	0.154 in
Package / Case [y]	3.9 mm
Supplier Device Package	16-SOIC
Voltage - Supply [Max]	18 V
Voltage - Supply [Min]	0 V

NCP4390 Series

Resonant Controller with Synchronous Rectifier Control, Enhanced Light Load

Part	Mounting Type	Current - Supply	Supplier Device Package	Operating Temperature [Min]	Operating Temperature [Max]	Package / Case	Package / Case [x]	Package / Case [y]	Applications	Voltage - Supply [Max]	Voltage - Supply [Min]
ON Semiconductor NCP4390DR2G	Surface Mount	2.8 mA	16-SOIC	-40 °C	125 ¯C	16-SOIC	0.154 in	3.9 mm	Secondary-Side Controller Synchronous Rectifier	18 V	0 V

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 2.38
		10	$ 2.14
		25	$ 2.02
		100	$ 1.62
		250	$ 1.41
		500	$ 1.37
		1000	$ 1.09
	Digi-Reel®	1	$ 2.38
		10	$ 2.14
		25	$ 2.02
		100	$ 1.62
		250	$ 1.41
		500	$ 1.37
		1000	$ 1.09
	Tape & Reel (TR)	2500	$ 1.00
Newark	Each (Supplied on Cut Tape)	1	$ 2.54
		10	$ 1.61
		25	$ 1.52
		50	$ 1.44
		100	$ 1.34
		250	$ 1.22
		500	$ 1.14
		1000	$ 1.08
ON Semiconductor	N/A	1	$ 0.92

Description

General part information

NCP4390 Series

The NCP4390 is an advanced Pulse Frequency Modulated (PFM) controller for LLC resonant converters with Synchronous Rectification (SR) that offers best in class efficiency for isolated DC/DC converters. It employs a current mode control technique based on a charge control, where the triangular waveform from the oscillator is combined with the integrated switch current information to determine the switching frequency. This provides a better control-to-output transfer function of the power stage simplifying the feedback loop design while allowing true input power limit capability. Closed-loop soft-start prevents saturation of the error amplifier and allows monotonic rising of the output voltage regardless of load condition. A dual edge tracking adaptive dead time control minimizes the body diode conduction time thus maximizing efficiency.