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    [Help] USB not giving out 500mA + 5V!!!

    I've connected the USB to a boost converter to increase the voltage to 12V BASED on the current from USB to drive a 12V component but its giving very little current... when it's at 5V it was only supplying 0.1A and when it's at 0.5A, it supplies very very low voltage...Why?

    Am I missing a component?

    Max 8895

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    Re: [Help] USB not giving out 500mA + 5V!!!

    The USB host provides 100mA of current to each port by default. It provides the full 500mA only when when the device informs the host via the enumeration process. It's all part of the USB specs.



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  3. #3
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    Re: [Help] USB not giving out 500mA + 5V!!!

    How do I perform the enumeration process without using a programmable chip?

    Thank you

    ---------- Post added at 16:57 ---------- Previous post was at 15:40 ----------

    I find a lot of MAX chips but none are solder-able.

    :( help.



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