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FAN6248XC / XD: Advanced Synchronous Rectifier Controller for LLC Resonant Converter

Datasheet: Advanced Synchronous Rectifier Controller for LLC Resonant Converter
Rev. 2 (219kB)
Product Overview
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The FAN6248 is an advanced synchronous rectifier (SR) controller that is optimized for LLC resonant converter topology with minimum external components. It has two driver stages for driving the SR MOSFETs which are rectifying the outputs of the secondary transformer windings. The two gate driver stages have their own sensing inputs and operate independently of each other. The adaptive parasitic inductance compensation function minimizes the body diode conduction maximizing the efficiency. The advanced control algorithm allows stable SR operation over entire load range. According to the operating frequency and turn-off threshold voltage, FAN6248 has four different versions - FAN6248HCMX, FAN6248HDMX, FAN6248LCMX, FAN6248LDMX
Features
 
  • Highly integrated self-contained control of synchronous rectifier with a minimum external component count
  • Optimized for LLC resonant converter
  • Anti shoot-through control for reliable SR operation
  • Separate 100 V rated sense inputs for sensing the drain and source voltage of each SR MOSFET
  • Adaptive parasitic inductance compensation to minimize the body diode conduction
  • SR current inversion detection under light load condition
  • Light load detection
  • Adaptive minimum on time for noise immunity
  • Operating voltage range up to 30 V
  • Low start-up and stand-by current consumption
  • Operating frequency range from 25 kHz up to 700 kHz
  • High driver output voltage of 10.5 V to drive all MOSFET brands to the lowest RDS(ON)
  • Low operating current in green mode (typ. 350 µA)
Applications   End Products
  • LLC Resonant Converter
 
  • High Power Density Adapter
  • High-Efficiency Desktop and Server Power Supplies
  • Networking and Telecom Power Supplies
  • Large Screen TV Power
  • High Power LED Lighting
Availability & Samples
Specifications
Product
Status
Compliance
Description
Package
MSL
Container
Budgetary Price/Unit
Type
Case Outline
Type
Temperature
Type
Qty.
FAN6248HCMX Active
Pb-free
Halide free
FAN6248XC / XD, for large Lstray SR MOSFET, TO220 or D2Pak, 60k~ 700kHz SOIC-8 751EB 1 260 Tape and Reel 2500 $0.4131
FAN6248HDMX Active
Pb-free
Halide free
FAN6248XC / XD, for small Lstray SR MOSFET, PQFN or DPak, 60k~ 700kHz SOIC-8 751EB 1 260 Tape and Reel 2500 $0.4131
FAN6248LCMX Active
Pb-free
Halide free
FAN6248XC / XD, for large Lstray SR MOSFET, TO220 or D2Pak, 25k~ 100kHz SOIC-8 751EB 1 260 Tape and Reel 2500 $0.4131
FAN6248LDMX Active
Pb-free
Halide free
FAN6248XC / XD, for small Lstray SR MOSFET, PQFN or DPak, 25k~ 100kHz SOIC-8 751EB 1 260 Tape and Reel 2500 $0.4131
Market Leadtime (weeks) : 4 to 8
ON Semiconductor   (2020-09-02 00:00) : 17,500
Market Leadtime (weeks) : 17 to 20
Market Leadtime (weeks) : 13 to 16
Market Leadtime (weeks) : 4 to 8
ON Semiconductor   (2020-09-02 00:00) : 10,000

Product
Description
Pricing ($/Unit)
Compliance
Status
VCC Max (V)
Vref Typ (V)
ICC Max (A)
TA Min (°C)
TA Max (°C)
Package Type
FAN6248HCMX  
 $0.4131 
Pb
H
 Active   
30
-
0.01
-40
125
SOIC-8
FAN6248HDMX  
 $0.4131 
Pb
H
 Active   
30
-
0.01
-40
125
SOIC-8
FAN6248LCMX  
 $0.4131 
Pb
H
 Active   
30
-
0.01
-40
125
SOIC-8
FAN6248LDMX  
 $0.4131 
Pb
H
 Active   
30
-
0.01
-40
125
SOIC-8
Case Outlines
751EB   
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