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AUIRCS3040N Datasheet(PDF) 9 Page - International Rectifier |
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AUIRCS3040N Datasheet(HTML) 9 Page - International Rectifier |
9 / 17 page 40V AU-ConvertIR TM Module AUIRCS3040N www.irf.com © 2015 International Rectifier Submit Datasheet Feedback June 17, 2015 9 Application Information A- Typical Applications 1- Single Phase Buck Converter Figure 5 shows a typical application diagram in which the AUIRCS3040N is used as power stage of a buck converter from a VDCIN supply to a lower Vout power supply. The AU-ConvertIR allows a dramatically reduced component count implementation of the power stage. The digital controller provides the input signals for both high and low side MOSFETs taking care of the needed dead time; a bootstrap network (i.e. DB, RB and CBs) realizes the power supply for the higher voltage well of the gate driver that is responsible for the High side MOSFET driving. The VSS and COM pins are the signal and power grounds respectively; those two points have to be connected together in a single point of the pcb to improve the signal integrity and, as a consequence, the module driving. CBs RB DB VDCIN Digital Controller COM Cbp VCC HIN LIN VSS VB VS VDCIN COM AUIRCS3040N Rin Rin Vcc L Vout Figure 5 2- Multiphase Buck Converter Figure 6 shows another typical application diagram in which AUIRCS3040N is used as power stage in a multiphase buck converter. For better understanding the bootstrap connection of AU-ConvertIR 2, 3 and 4 are not shown. This solution allows a better and more reliable system integration dramatically reducing the component count It is possible to easily evaluate the power managed by each phase in a specific application considering that each AU-ConvertIR stage is able to manage up to 30A in a controlled thermal environment. For instance this power is equal about to 400W in a typical 14V battery application. As a consequence, converter in Fig. 6 with 4 phases can ideally manage up to 1.8kW. |
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