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Frequent questions

  • [FAQ] Why does my e-load cause my high side switch to shut down?

    One common practice when people are using an e-load to mimic a resistive load is to use the e-load in constant current mode. However, by doing so the user will often experience unwanted device shutdowns. Why is this happening? Resistive loads in nature…

  • [FAQ] What is TI High Side Switches' extended voltage range?

    Sometimes the datasheet for TI High Side Switch will have a section called “extended voltage range” like below: The “extended supply voltage” is only for transient conditions such as cold crank (less than minimum nominal supply voltage) and surge…

  • [FAQ] What’s TI high side switch’s inrush current limit feature?

    Other Parts Discussed in Thread: TPS272C45 In some TI high side switches (ex. TPS272C45), there is a unique feature called “Inrush Current Handling”. It’s an additional feature built on top of the traditional fixed current limiting. The functionality…

  • [FAQ]Why VSYS does not start up normally when there is a loading on the SYS and the battery is not present for BQ25601, BQ25601D, BQ25606, BQ25611D, BQ25616, BQ25616J, BQ25618, BQ25619, BQ25600, BQ25600D, BQ25600C?

    Part Number: BQ25601D Other Parts Discussed in Thread: BQ25600 , BQ25601 , BQ25618 , BQ25606 , BQ25600D , BQ25616 , BQ25619 , , BQ25600C , BQ25611D Hi, It was observed that VSYS could not start up normally with some loading on SYS when the battery…

  • [FAQ] Why can the USB-PD-CHG-EVM-01 not be configured for a 1s battery?

    Part Number: USB-PD-CHG-EVM-01 The TPS25750D requires 5V on PP5V in order to source 5V and for VCONN support. In the design of the board, we decided to supply the PP5V rail from a 5V buck converter. If a battery voltage less than or close to 5V were…

  • [FAQ] What is the function of the MPPSET voltage on the BQ24650?

    Part Number: BQ24650 The function of the BQ24650 MPPSET pin is to hold the input voltage (known as the Maximum Power Point Voltage) at a set point in the event that the input power drops. It is set as a voltage divider from the input to the MPPSET…

  • [FAQ] Can the EV2400 be used to communicate with the BQ25792 through BQSTUDIO on the board USB-PD-CHG-EVM-01?

    Part Number: USB-PD-CHG-EVM-01 Other Parts Discussed in Thread: BQSTUDIO , BQ25792 , EV2400 Yes, the EV2400 and BQStudio can be used to communicate with the charger BQ25792. Please connect the EV2400 to the J7 header with the GND wire closest to…

  • [FAQ] How do I configure the TPS25750 and flash the EEPROM with the output binary for the board USB-PD-CHG-EVM-01?

    Part Number: USB-PD-CHG-EVM-01 Other Parts Discussed in Thread: TPS25750 , Open the TPS25750 Application Customization Tool and … Select all of the desired PD controller and charger parameters. Select “Download Full Flash Binary.” Power the…

  • [FAQ] How is the input current limit determined for the BQ25882, BQ25883, BQ25886, and BQ25887 chargers?

    Other Parts Discussed in Thread: BQ25886 How do I set the input current limit for these chargers?

  • [FAQ] How should the /BATPRES pin be connected on the following chargers: BQ24770, BQ24773, BQ24780S?

    Other Parts Discussed in Thread: BQ24780S What is the function of the charger's /BATPRES pin, and how should this pin be connected?

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