topic TWR system power from custom module? in Kinetis Microcontrollers https://community.nxp.com/t5/Kinetis-Microcontrollers/TWR-system-power-from-custom-module/m-p/257482#M7650 <HTML><HEAD></HEAD><BODY><P>We would like to power the kinetis k40 module from a module that acts also as a power supply for many things. Should we connect the traces for all the supply pins on the PCI-e connectors or just a few are enough? I mean we have to make traces that go to all 3.3 V, 5V and GND pins of the TWR elevators to make the k40 work or if i make like... 2-3 for each it should be ok?</P></BODY></HTML> Sun, 26 Jan 2014 03:44:19 GMT eliasmaroglou 2014-01-26T03:44:19Z TWR system power from custom module? https://community.nxp.com/t5/Kinetis-Microcontrollers/TWR-system-power-from-custom-module/m-p/257482#M7650 <HTML><HEAD></HEAD><BODY><P>We would like to power the kinetis k40 module from a module that acts also as a power supply for many things. Should we connect the traces for all the supply pins on the PCI-e connectors or just a few are enough? I mean we have to make traces that go to all 3.3 V, 5V and GND pins of the TWR elevators to make the k40 work or if i make like... 2-3 for each it should be ok?</P></BODY></HTML> Sun, 26 Jan 2014 03:44:19 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/TWR-system-power-from-custom-module/m-p/257482#M7650 eliasmaroglou 2014-01-26T03:44:19Z Re: TWR system power from custom module? https://community.nxp.com/t5/Kinetis-Microcontrollers/TWR-system-power-from-custom-module/m-p/257483#M7651 <HTML><HEAD></HEAD><BODY><P>Hello Elias:</P><P></P><P>Not exactly the response to your question, but I recommend you to check the next application notes:</P><P></P><P><STRONG>AN4649 Power for the tower:</STRONG></P><P></P><P><A href="http://cache.freescale.com/files/microcontrollers/doc/app_note/AN4649.pdf" title="http://cache.freescale.com/files/microcontrollers/doc/app_note/AN4649.pdf">http://cache.freescale.com/files/microcontrollers/doc/app_note/AN4649.pdf</A></P><P></P><P><STRONG>AN4390 Creating your own Tower Module:</STRONG></P><P></P><P><A href="http://cache.freescale.com/files/32bit/doc/app_note/AN4390.pdf" title="http://cache.freescale.com/files/32bit/doc/app_note/AN4390.pdf">http://cache.freescale.com/files/32bit/doc/app_note/AN4390.pdf</A></P><P></P><P>I am unsure about how many pins you should connect, as it depends on the current that you need to drive. Maybe you can give a check to the design files of the primary tower elevator, and see how many lines are routed from the USB and 3V3 regulator to the actual elevator pins.</P><P></P><P>Regards!</P><P>Jorge Gonzalez</P></BODY></HTML> Sun, 26 Jan 2014 19:21:48 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/TWR-system-power-from-custom-module/m-p/257483#M7651 Jorge_Gonzalez 2014-01-26T19:21:48Z