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NCP81178: Secondary Synchronous Rectifier Driver for Forward Converters

Datasheet: Secondary Synchronous Rectifier Driver for Forward Converters
Rev. 4 (187kB)
Product Overview
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The NCP81178 is a secondary-side synchronous rectifier driver designed for isolated power converters, especially actively clamped forward or flyback, and asymmetric half bridge converters. The NCP81178 drives two N-channel MOSFETs on the secondary side in a complementary manner. It accepts a PWM signal that can be derived from the secondary winding or an auxiliary winding on the main power transformer. It can also take a PWM from the primary side controller through a pulse transformer or other isolator.
Features   Benefits
     
  • N-channel synchronous rectifier MOSFET driver
 
  • Drives N-channel MOSFETs to improve efficiency for high power isolated solution
  • Primary shutdown detection
 
  • Protection against overvoltage
  • Internally generated PWM threshold voltage with external programmability
 
  • Design flexibility
  • 4.5A/3.8A sink and 3A source capability
 
  • Strong drivers allows fast turn on/off characteristics
  • 3mm by 3mm DFN package
 
  • Small size reduces board space
Applications   End Products
  • Isolated DC/DC power
  • servers silver box supplies
  • 48V server, telecom and datacom
 
  • servers
  • datacom
  • isolated bricks
Technical Documentation & Design Resources
Data Sheets (1) Package Drawings (1)
Availability & Samples
Specifications
Product
Status
Compliance
Description
Package
MSL
Container
Budgetary Price/Unit
Type
Case Outline
Type
Temperature
Type
Qty.
NCP81178MNTXG Active
Pb-free
Halide free
NCP81178, Secondary Synchronous Rectifier Driver for Forward Converter DFN-10 506CL 1 260 Tape and Reel 3000 Contact Sales Office
Market Leadtime (weeks) : Contact Factory

Product
Description
Pricing ($/Unit)
Compliance
Status
VCC Max (V)
Vref Typ (V)
ICC Max (A)
TA Min (°C)
TA Max (°C)
Package Type
NCP81178MNTXG  
Pb
H
 Active   
14
1.25
-40
125
DFN-10
Case Outlines
506CL   
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