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IR3883 Datasheet(PDF) 4 Page - Infineon Technologies AG |
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IR3883 Datasheet(HTML) 4 Page - Infineon Technologies AG |
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4 / 43 page  IR3883 SupIRBuck® Synchronous Buck Regulator Block Diagram Datasheet 4 Rev 3.0 08/20/2016 3 Block Diagram Figure 3-1 Simplified block diagram PWM GATE DRIVE LOGIC ADAPTIVE ON-TIME GENERATOR + - SOFT START CONTROL LOGIC Zcross PVin Fault VCC SET FB Vin BOOT SW PGND Vo PVIN EN/ FCCM GND PWM COMP VCC VCC Current Limit Control Zero Cross DETECTION LDrVin HDrv LDrv LDrVin LDrVin FCCM_EN OV Fault Fault OV FCCM Vcc THERMAL SHUT-DOWN OV DETECTION FB OV SS OV Fault INTERNAL REFERENCE INDUCTOR CURRENT RIPPLE EMULATOR + VREF OCSet HDrVin POR HDrVin + POR PGND + Enable LDO PGood POR |
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