NCP4318 Synchronous Rectification Controllers

onsemi NCP4318 Synchronous Rectification Controllers are designed for LLC resonant converters with minimum external components. The controllers have a two-gate driver stage for driving the SR MOSFETs which are rectifying the outputs of the secondary transformer windings. The two gate driver stages have their own Drain and Source sensing inputs and operate independently of each other. The advanced adaptive dead-time control compensates a voltage across parasitic inductance to minimize the body diode conduction and maximize the system efficiency. The advanced turn-off control algorithm allows stable SR operation over the entire load range. NCP4318 has two versions of pin assignment, NCP4318AXX, NCP4318BXX.

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Description Datasheet Availability Pricing (USD) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Topology
Number of Outputs
Switching Frequency
Output Voltage
Output Current
Minimum Operating Temperature
Maximum Operating Temperature
Mounting Style
Package/Case
Packaging
onsemi NCP4318ALSDR2G
onsemi Switching Controllers ADVANCED SYNCHRONOUS RECTIFIER CONTROLLER FOR LLC RESONANT CONVERTER
Datasheet
2,497In Stock
Cut Tape
$1.26
$0.909
$0.822
$0.728
View
Reel
$0.572
Min.: 1
Mult.: 1
: 2,500
1 Output 22 kHz to 500 kHz 10.5 V 4.5 A - 40 C + 125 C SMD/SMT Reel, Cut Tape

onsemi Switching Controllers ADVANCED SYNCHRONOUS RECTIFIER CONTROLLER FOR LLC RESONANT CONVERTER
Datasheet
2,643In Stock
Cut Tape
$1.47
$1.07
$0.968
$0.856
Reel
$0.694
View
Min.: 1
Mult.: 1
: 2,500
Buck 2 Output 22 kHz 6 V 4.5 A - 40 C + 125 C SMD/SMT SOIC-8 Reel, Cut Tape
onsemi NCP4318ALCDR2G
onsemi Switching Controllers ADVANCED SYNCHRONOUS RECTIFIER CONTROLLER FOR LLC RESONANT CONVERTER
Datasheet
22,660In Stock
Cut Tape
$1.30
$0.94
$0.851
$0.754
View
Reel
$0.629
MouseReel Available
Min.: 1
Mult.: 1
: 2,500
1 Output 22 kHz to 500 kHz 10.5 V 4.5 A - 40 C + 125 C SMD/SMT Reel, Cut Tape, MouseReel
onsemi NCP4318BLCDR2G
onsemi Switching Controllers ADVANCED SYNCHRONOUS RECTIFIER CONTROLLER FOR LLC RESONANT CONVERTER
Datasheet
2,500In Stock
2,500Expected 2026/12/11
Cut Tape
$1.30
$0.94
$0.85
$0.751
View
Reel
$0.627
MouseReel Available
Min.: 1
Mult.: 1
: 2,500
1 Output 22 kHz to 500 kHz 10.5 V 4.5 A - 40 C + 125 C SMD/SMT Reel, Cut Tape, MouseReel

onsemi Switching Controllers ADVANCED SYNCHRONOUS RECTIFIER CONTROLLER FOR LLC RESONANT CONVERTER
Datasheet
2,500Expected 2027/05/03
Cut Tape
$1.40
$1.01
$0.914
$0.844
$0.712
Reel
$0.654
Min.: 1
Mult.: 1
: 2,500
Buck 2 Output 22 kHz 6 V 4.5 A - 40 C + 125 C SMD/SMT SOIC-8 Reel, Cut Tape