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Product needed to check Phone charging through USB

Padmini Gaidhani
Prodigy 10 points
Other Parts Discussed in Thread: INA213, LM321, BQ25871, BQ25872

Hello Team , 

I am looking for the product of which one end will connect to the USB port ( in car) and another end will be connected to the Phone charging cable.

Using such device I will be able to read Current , Voltage etc and decide the Phone charging pattern. Main objective is to get the serial/ data output of Current / Voltage readings.

I searched in Automotive USB section but most are the controller not tester.

Please help.

Thanks

  • 0
    Prodigy 5 points

    Hello Padmini,
    Allow me to provide 2 suggestions.

    We have a reference design for a 100W USB Type C PD Power Monitoring Dongle

    The PMP11474 reference design measures the voltage and current present on a USB type C cable.  Current is monitored across a 5 mΩ sense resistor by an INA213 current amplifier.  Voltage is monitored by an LM321 amplifier.  These measurements are processed and displayed on a small LCD screen by an MSP430.
    This is only a reference design, it is not orderable.

    However part of your original question referred to being able to control the charging pattern and getting voltage/current over a serial bus.

    Please look at the following 2 devices.

    Bq25872 and Bq25871
    14-V, 7-A, Battery Switch Charger with Integrated 10-bit ADC

    www.ti.com/.../bq25871



     

    These have I2C and report back to a host which then controls the charger.

    The integrated 10-bit ADC can measure input voltage and current, battery voltage and current, as well as battery temperature and input connector temperature. This allows the user application to continuously monitor the power input and battery charging parameters to ensure the safety of the battery charging. The flexible OVP and OCP thresholds for VBUS, VOUT, and battery can be modified via I2C registers as the battery goes through constant current (CC) and constant voltage (CV) mode.

    The I2C serial interface of the device can operate at speeds up to 1 MHz and allows access to the ADC’s measurements of the different charging parameters and also allows for flexible software control of the device. The INT pin provides instantaneous feedback to the host in case of a fault condition. I2C status registers allow the host to read the current status of all faults and events.

     

    Are one of these what you are looking for?