IR3898MPBF IRF [International Rectifier], IR3898MPBF Datasheet
IR3898MPBF
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IR3898MPBF Summary of contents
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SupIRBuck TM USER GUIDE FOR IR3898 EVALUATION BOARD DESCRIPTION The IR3898 is a synchronous converter, providing a compact, performance and flexible solution in a small 4mm Power QFN package. Key features offered by the IR3898 include internal ...
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CONNECTIONS and OPERATING INSTRUCTIONS A well regulated +12V input supply should be connected to VIN+ and VIN-. A maximum of 6A load should be connected to VOUT+ and VOUT-. The inputs and output connections of the board are listed in ...
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Connection Diagram Enable VDDQ Vref Sync S-Ctrl AGnd Fig. 1: Connection Diagram of IR3899/98/97 Evaluation Boards 12/8/2011 Vin Gnd Gnd PGood Vsns Vcc+ Vcc- IRDC3898-P1V2 Vout Top View Bottom View 3 ...
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Single point connection between AGnd and PGnd 12/8/2011 Fig. 2: Board Layout-Top Layer Fig. 3: Board Layout-Bottom Layer IRDC3898-P1V2 4 ...
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Fig. 4: Board Layout-Mid Layer 1 12/8/2011 Fig. 5: Board Layout-Mid Layer 2 IRDC3898-P1V2 5 ...
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IRDC3898-P1V2 6 ...
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... Part Number Panasonic EEV-FK1E331P TDK C3216X5R1E106M Murata GRM188R71E104KA01B Murata GRM188R71H222KA01B Murata GRM1885C1H181JA01D TDK C2012X5R0J226M TDK C1608X5R1C225M Murata GRM188R71E103KA01J Murata GRM188R61E105KA12D TDK SPM6550T-1R0 Panasonic ERJ-3EKF2001V Panasonic ERJ-3EKF3321V Panasonic ERJ-3EKF2371V Panasonic ERJ-3EKF1000V Panasonic ERJ-3EKF20R0V Panasonic ERJ-3EKF3922V Panasonic ERJ-3GEY0R00V Panasonic ERJ-3EKF4992V Panasonic ERJ-3EKF7501V IR IR3898MPBF 7 ...
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TYPICAL OPERATING WAVEFORMS Vin=12.0V, Vo=1.2V, Io=0-6A, Room Temperature, no airflow Fig. 7: Start Load Good Fig. 9: Start up with 1V Pre Bias ...
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TYPICAL OPERATING WAVEFORMS Vin=12.0V, Vo=1.2V, Io=0-6A, Room Temperature, no air flow 12/8/2011 Fig. 13: Transient Response step Ch :V Ch4-Iout 2 out IRDC3898-P1V2 9 ...
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TYPICAL OPERATING WAVEFORMS Vin=12.0V, Vo=1.2V, Io=0-6A, Room Temperature, no air flow Fig. 14: Bode Plot at 6A load shows a bandwidth of 110.8KHz and phase margin of 50.5 degrees 12/8/2011 IRDC3898-P1V2 10 ...
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TYPICAL OPERATING WAVEFORMS Vin=12.0V, Vo=1.2V, Io=0-6A, Room Temperature, no air flow Fig (15) Soft start and soft stop using S_Ctrl pin Fig (16) Feed Forward for Vin change from 7 to 16V and back to 7V 12/8/2011 IRDC3898-P1V2 Ch -Vout ...
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TYPICAL OPERATING WAVEFORMS Vin=12.0V, Vo=1.2V, Io=0-6A, Room Temperature, no air flow 0.6 1.2 1.2 1.1 1 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 0.6 1.2 12/8/2011 1.8 ...
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THERMAL IMAGES Vin=12.0V, Vo=1.2V, Io=0-6A, Room Temperature, No Air flow Fig. 19: Thermal Image of the board at 6A load 12/8/2011 Test point 1 is IR3898 Test point 2 is inductor IRDC3898-P1V2 13 ...
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PCB METAL AND COMPONENT PLACEMENT Evaluations have shown that the best overall performance is achieved using the substrate/PCB layout as shown in following figures. PQFN devices should be placed to an accuracy of 0.050mm on both X and Y axes. ...
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SOLDER RESIST IR recommends that the larger Power or Land Area pads are Solder Mask Defined (SMD.) This allows the underlying Copper traces large as possible, which helps in terms of current carrying capability and device cooling ...
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STENCIL DESIGN Stencils for PQFN can be used with thicknesses of 0.100-0.250mm (0.004-0.010"). Stencils thinner than 0.100mm are unsuitable because they deposit insufficient solder paste to make good solder joints with the ground pad; high reductions sometimes create similar problems. ...
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PACKAGE INFORMATION IR WORLD HEADQUARTERS: 12/8/2011 Figure 23: Package Dimensions 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105 This product has been designed and qualified for the Industrial market Visit us at www.irf.com for sales contact information ...