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BQ25758: schematic review

Part Number: BQ25758

Tool/software:

Hi,

Would you please help us to review BQ25758 schematic?

It design for PD3.1 240W, 48V, 5A.

BQ25758 sch.pdf

  • Hi Jeff,

    Thanks for working with this. I have reviewed the schematic. Here are my notes:

    • There appears to be a typo on the net name for REGN going to DRV_SUP. Make sure this does not cause any disconnect issues so that DRV_SUP is powered.
    • Also, it looks like DRV_SUP is being pulled to PGND by a 0 Ohm resistor. This would short REGN and DRV_SUP which would not allow the device to operate.
    • This device requires a programming resistor on the pin 36 FSW_SYNC to program a switching frequency.
    • IIN and IOUT (Pins 10 and 9) should not have a series capacitor. This looks like a filter network that a programming resistor should go in parallel to. These pins require a resistor from the pin to PGND.
    • TS/NC (Pin 8) does not need the temperature sensing network unless you will set EN_TS = 1.

    Regards,
    Michael

  • Hi Michael,

    Got it, thank you!

    Jeff