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IRFHM8228PBF Datasheet(PDF) 7 Page - International Rectifier |
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IRFHM8228PBF Datasheet(HTML) 7 Page - International Rectifier |
7 / 10 page IRFHM8228PbF 7 www.irf.com © 2014 International Rectifier Submit Datasheet Feedback June 30, 2014 The typical application topology for this product is the synchronous buck converter. These converters operate at high frequencies (typically around 400 kHz). During turn-on and turn-off switching cycles, the high di/dt currents circulating in the parasitic elements of the circuit induce high voltage ringing which may exceed the device rating and lead to undesirable effects. One of the major contributors to the increase in parasitics is the PCB power circuit inductance. This section introduces a simple guideline that mitigates the effect of these parasitics on the performance of the circuit and provides reliable operation of the devices. To reduce high frequency switching noise and the effects of Electromagnetic Interference (EMI) when the control MOSFET (Q1) is turned on, the layout shown in Figure 19 is recommended. The input bypass capacitors, control MOSFET and output capacitors are placed in a tight loop to minimize parasitic inductance which in turn lowers the amplitude of the switch node ringing, and minimizes exposure of the MOSFETs to repetitive avalanche conditions. Fig 19. Placement and Layout Guidelines Placement and Layout Guidelines |
Similar Part No. - IRFHM8228PBF_15 |
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Similar Description - IRFHM8228PBF_15 |
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