AN-1077 Datasheet, PDF (1/20 Pages) International Rectifier – PFC Converter Design with IR1150 One Cycle Control IC

Application Note AN-1077
PFC Converter Design with IR1150
One Cycle Control IC
By R. Brown, M. Soldano, International Rectifier
Table of Contents
Page
Introduction ..........................................................................................1
One Cycle Control for PFC Applications ..............................................2
IR1150 Detailed Description.................................................................3
PFC Converter Design Procedure........................................................4
Converter Specifications .................................................................4
Converter Input and Output Variables Defined ...............................4
Converter Schematic Diagram........................................................5
Maximum Input Power and Currents....................................................6
High Frequency Input Capacitor Requirements ...................................6
Boost Inductor Designs ........................................................................6
Output Capacitor Requirements .....................................................7
Control Section Design ...................................................................7
Output Voltage Divider....................................................................7
Output OVP Divider Design ............................................................8
Switching Frequency Selection.......................................................8
Current Loop and Over-current Protection......................................9
Soft Start Design.............................................................................11
Table of Contents continues on next page…
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AN-1077
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