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Recent content by newbie_hs

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    Will decoupling capacitors cause radiated emission

    Yes cpas are necessary.Here discussion is about it's placement
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    Will decoupling capacitors cause radiated emission

    The light blue is my controller and decaps are shown in red. Below is the PDN
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    Will decoupling capacitors cause radiated emission

    Thank you. The decoupling path here I mean is Decoupling capacitor for Microcontroller VDD(Power supply rail) The controller is placed in TOP and the Decoupling capacitors for this controllers VDD rail is present on bottom layer L6
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    Will decoupling capacitors cause radiated emission

    I am debugging a 6 layer board for RE issue and the stackup is (S G G P+G G S).This is a 6 layer board. The microcontroller is present in TOP(L1) layer and decoupling capacitor is placed in bottom layer(L6). I was told that "When you decouple through vias, you are always going to get the IO...
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    DS90UB928Q-Q1: Horizontal Sync and Vertical Sync pins of DS90UB928Q-Q1

    I am using DS90UB928Q-Q1 in y design.The output of this IC will be connected to LCD. The LCD has dedicated Horizontal Sync and Vertical Sync pins. In the datasheet of DS90UB928Q-Q1 I can see that ,there is no dedicated pins for Horizontal Sync and Vertical Sync. But in the datasheet I can see...
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    Power over coax schematic review

    May I know is it possible to simulate the PoC circuit in LTspice
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    Power over coax schematic review

    May I know can I connect multiple ferrite beads in series to improve the impedance. As per my self study goal of the PoC filter is to make the impedance of the PoC delivery network much higher than the impedance of the 50-ohm transmission line so that the high speed signal edges don't "see"...
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    Power over coax schematic review

    Thank you very much I will remove R790. My maximum load current is 1A only. The ferrite beads P/N is MPZ2012S102AT000(1 kOhms @ 100 MHz 1 Power Line Ferrite Bead 0805 (2012 Metric) 1.5A 150mOhm). The two inductors are SRU2016-4R7Y(4.7 µH Shielded Drum Core, Wirewound Inductor 1.15 A 215mOhm...
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    Power over coax schematic review

    I am using DS90UB925Q-Q1 5 serializer in my board and output of this board is connected to DS90UB926Q deserializer .The block diagram is given below. As per theory I can send power along with the data lines(Power-over-Coax Design) You can see my PoC network in the bottom of the image. My...
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    Enabling and Disabling a switcher using Microcontroller Circuit Review

    Sorry my mistake. V_OH ??? (min) = 1.35V V_OL ??? (max) = 0.45V I won't be able to share the datasheet because of NDA 1708511003 In this case by default IC will be on and when you turn on the NPN transistor the IC will be off.Please correct me if I am wrong
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    Enabling and Disabling a switcher using Microcontroller Circuit Review

    VDD_MCU_5V is a 5V supply coming from a switcher. I have two MCUs in the board one with is working at 5V and other at 1.8V 1.8V MCU is used for enabling or disabling the switcher shown here 1.35V , 1.8V Not tested yet.This is my first proto.So thought of providing options
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    Enabling and Disabling a switcher using Microcontroller Circuit Review

    Okay good point. Will connect 100K from enable to Ground and microcontroller to other end of 100K Hope that is fine.Below is my new circuit. Do I need to connect 100K to GND or 10K is enough How do I design this pull down resistor
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    Enabling and Disabling a switcher using Microcontroller Circuit Review

    I am using TPS62160QDSGRQ1 in my design. I need to enable and disable it using a microcontroller GPIO and it voltage is 1.8V. Below is my circuit. My design calculations are are given below. May I know your comments
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    Power over coax can we use normal connector header for DOUT line

    All the connectors I found with 50 Ohm impedance are SMA type only. I need more pins

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