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BQ24113EVM: System-Controlled BQ24113EVM

Ram Tal
Intellectual 500 points

Part Number: BQ24113EVM

Hi,

for battery charging prototype we're using BQ24113EVM. 

Battery- Li-Ion 2-cell, System-Controlled Application.

the thing is- I'm connecting 2 lines to the MCU- STAT1 connected to microcontroller input, CMOD connected to microcontroller output

the PG# and CE# are don't care (CE# is always enabled, PG# line don't care).

Now- how it is exactly system-controlled? it's not specified in the datasheet.

I'll be glad to understand this part (remember, I'm using the EVM not the IC alone).

Regards

  • 0
    TI__Mastermind 20570 points
    The device is released in 2004 and at the time CE pin is controlled by the host to enable and disable charger, thus the "Host controlled".

    If you are looking for more parameter to be controlled by the host, then you are probably looking for a charger with I2C.
  • 0 in reply to Jing Zou
    Intellectual 500 points

    Hi,

    So in this case, why there are jumpers with an external option (LED or EXT) and terminal blocks to wire the external option configuration?

    the STAT1, for example, was thought by me to indicate the host of charging status (of course not as I2C could indicate, but still).

  • 0 in reply to Ram Tal
    TI__Mastermind 20570 points

    The EVM is used for independently evaluate the charger. You can use external wiring to connect to your MCU for your system evaluation. 

  • 0 in reply to Jing Zou
    Intellectual 500 points

    OK.

    Can you please be more specific. what can be controlled/evaluated by my system (the MCU) regarding the recharge.

    For example- STAT1 is an input. how my system can use this input to understand the state of the rechargeable load?

  • 0 in reply to Ram Tal
    TI__Mastermind 20570 points

    Please refer to datasheet page 5 for the pins list. 

    Please refer to datasheet page 15 for the status pin indication.

    MCU can pull high or low of a pin to enable or disable a function. MCU can also read if a pin is high or low to know the status.

    What is the end equipment? What is the projected market size?

  • 0 in reply to Jing Zou
    Intellectual 500 points

    the end equipment is two brushless servo motors operated by a 2-cell Li-ion battery.

    In the beginning I thought Battery Charger such as the bq241XX is enough but I'm replacing it to battery charger+fuel gauge (I2C  comm) in order to have better monitoring on the battery (there's no charging and operating at the same time in our project).

    Anyway, I thought the bq24113EVM will be sufficient (for final development with the IC) but I guess it's not. thanks anyway.