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Type: Posts; User: bharath_k

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  1. Replies
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    Closed: DC-DC Switched-Mode Power Supply System

    Hello All,

    I designed a system to convert from 1.8V to 3.3V. I have the schematic diagram as shown below.

    156685

    I am running corner analysis and it passes all the corners except in SS_pre...
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    Closed: Re: Charge pump topology

    Thanks a lot. I will work on this and let you know the result.
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    Closed: Re: Charge pump topology

    Hi Brad,

    Thanks for your reply. May be I didn't explain my application clear. I don't want an oscillating circuit. I want a DC-DC converter. The application where this charge pump to be used is...
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    Closed: Charge pump topology

    Hi everyone,

    I have a task to design a charge pump to generated a output voltage of 3.3 V from 0.8 V supply with load current of 8 mA in 22nm technology. I started off with a Dickson charge pump...
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    Closed: Re: Designing the output stage class ab

    I know Vth of the device and not sure whether I can share it. So gave the range. I have found out a way to design. Your inputs were very valuable :)
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    Closed: Re: Simulation of output stage

    Okay I will reconfirm with my supervisor and check for different architecture.
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    Closed: Re: Simulation of output stage

    Here is the architecture given to me.

    147598
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    Closed: Re: Designing the output stage class ab

    Yeah that is the issue with this architecture that output swing is limited. So may be I can design for VDD-0.4 or VDD-0.45 and ?

    and non-inverting with unity gain.
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    Closed: Re: Simulation of output stage

    Yeah, but I have task to implement Class AB push pull output stage and hence my Voltage swing will be limited roughly by VDD-0.3 to VSS+0.3.
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    Closed: Re: Designing the output stage class ab

    Hi, Sorry for the incomplete specifications. I am designing it for the first time and I do not have much idea about it. As I mentioned I do not have any specifications given and I am free to choose....
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    Closed: Simulation of output stage

    I have implemented a two stage ota with class AB output. I need help in simulating the required plot. Kindly anyone help me.
    147570
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    Closed: Designing the output stage class ab

    Hi everyone,

    I need help in designing the following circuit. I designed M1, M2, M3, M4, M5, M6, M7 and M8 the normal way of designing two stage amplifier. I need help in designing M9, M10, M11 and...
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    Closed: Re: Plot lambda vs length in Cadence

    If I do parametric analysis on length. I would get like Graph1. But I want a graph something like Graph2. How do I proceed after getting Graph1?
    147460
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    Closed: Plot lambda vs length in Cadence

    Hi , Can anyone please tell me how to plot lambda vs length for a FET in cadence. I have plotted Lambda vs Vds. How do I carry out the simulation to plot it versus length?
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    Closed: Re: OTA along with class AB output stage

    This is what I am asked to do.147440

    All your inputs have been very helpful. I am trying to design for the architecture with source follower second stage.
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    Closed: Re: OTA along with class AB output stage

    I am free to choose Cload. I thought of using 2pF.
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    Closed: Re: OTA along with class AB output stage

    So according to my understanding from your inputs. I have come with the following circuit.147407

    Is the miller compensation necessary? what are the factors I should take into consideration...
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    Closed: Re: OTA along with class AB output stage

    I posted the same circuit with transistor names and yeah I missed a diode connection. Actually they haven't given me any specifications. I am free to choose.
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    Closed: Re: OTA along with class AB output stage

    Sorry forgot to attach the image of circuit.147395
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    1,876

    Closed: Re: OTA along with class AB output stage

    I am planning to design to get a gain of around 30 db from first stage and close to 10 db from next two stages and keep the overall gain around 40db. As the current increases from stage to stage I...
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    Closed: Re: OTA along with class AB output stage

    Yes exactly. I have tried to bias the the inverter by using diode method. Realizing diodes with diode connected mosfets.
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    Closed: Re: OTA along with class AB output stage

    Hi Frankrose. I do not have any specifications.
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    Closed: OTA along with class AB output stage

    Hello Guys,

    I need help in designing an Op amp consisting of OTA and class AB output stage. I have come up with circuit in the attachment. Can anyone help me how to go about designing from the...
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