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See Technical Specifications

NCP4304ADR2G

Secondary Side Controller, Synchronous Rectification, for High Efficiency SMPS Topologies

Manufacturer:

ON Semiconductor, LLC
Mfr.Part #:

NCP4304ADR2G
Datasheet:

NCP4304ADR2G Datasheet (PDF)
Case Outline:

751-07
MSL Temp (°C):

260
Container Type:

REEL
Topology:

Flyback, Forward, Half Bridge
EDA/CAD Models:

Request Free CAD Models for NCP4304ADR2G

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NCP4304ADR2G General Description

The NCP4304A/B is a full featured controller and driver tailored to control synchronous rectification circuitry in switch mode power supplies. Due to its versatility, it can be used in various topologies such as flyback, forward and Half Bridge Resonant LLC. The combination of externally adjustable minimum on and off times helps to fight the ringing induced by the PCB layout and other parasitic elements. Therefore, a reliable and noise less operation of the SR system is insured. The extremely low turn off delay time, high sink current capability of the driver and automatic package parasitic inductance compensation system allow to maximize synchronous rectification MOSFET conduction time that enables further increase of SMPS efficiency. Finally, a wide operating VCC range combined with two versions of driver voltage clamp eases implementation of the SR system in 24 V output applications.

Key Features

Precise True Secondary Zero Current Detection with Adjustable Threshold
Automatic Parasitic Inductance Compensation
Typically 40 ns Turn off Delay from Current Sense Input to Driver
Zero Current Detection Pin Capability up to 200 V
Optional Ultrafast Trigger Input
Disable Input
Adjustable Minimum ON Time and Minimum OFF Time
5 A/2.5 A Peak Current Sink/Source Drive Capability
Operating Voltage Range up to 30V

Application

High Power Density AC/DC Power Supplies

Specifications

Status	Active	Case Outline	751-07
MSL Temp (°C)	260	Container Type	REEL
Product Category	Switching Controllers	Topology	Flyback, Forward, Half Bridge
Number of Outputs	1 Output	Switching Frequency	500 kHz
Duty Cycle - Max	50 %	Input Voltage	9.9 V
Output Voltage	4.5 V	Output Current	5 A
Minimum Operating Temperature	- 40 C	Maximum Operating Temperature	+ 125 C
Mounting Style	SMD/SMT	Fall Time	35 ns, 50 ns
Isolation	Non-Isolated	Operating Supply Current	35 uA
Product Type	Switching Controllers	Rise Time	80 ns, 120 ns
Series	NCP4304	Factory Pack Quantity	2500
Subcategory	PMIC - Power Management ICs	Type	Primary & Secondary Side PWM Controllers
Unit Weight	0.019048 oz