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SiC521 Datasheet(PDF) 6 Page - Vishay Siliconix |
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SiC521 Datasheet(HTML) 6 Page - Vishay Siliconix |
6 / 16 page SiC521, SiC521A www.vishay.com Vishay Siliconix S15-0170-Rev. B, 09-Feb-15 6 Document Number: 62989 For technical questions, contact: powerictechsupport@vishay.com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 FUNCTIONAL BLOCK DIAGRAM Fig. 3 - SiC521 and SiC521A Functional Block Diagram PWM TIMING DIAGRAM Fig. 4 - Definition of PWM Logic and Tri-State DEVICE TRUTH TABLE ZCD_EN# PWM GH GL LL L H, IL > 0A L, IL < 0A LH HL L Tri-state L L HL LH HH H L H Tri-state L L PWM V CIN C GND 20K BOOT VSWH VDRV PGND Vref = 1 V Vref = 1 V Anti-cross conduction control logic VDRV PWM logic control & state machine UVLO ZCD_EN# VIN PHASE V CIN P GND GL SW VTH_PWM_R VTH_PWM_F VTH_TRI_R VTH_TRI_F PWM GH GL t PD_OFF_GL t TSHO t PD_ON_GH t PD_OFF_GH t PD_ON_GL t TSHO t PD_TRI_R t PD_TRI_R |
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