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TPS51285B PCB Layout Guideline

Other Parts Discussed in Thread: TPS51285B

Hi,

please share the recommended PCB layout design of this Power IC TPS51285B

Thanks Regards,

  • Indata sheet i have just found the following, i need the design layout image or WEBENCH® Design


    "Layout Considerations
    Good layout is essential for stable power supply operation. Follow these guidelines for an efficient PCB layout.
    Placement
    • Place voltage setting resistors close to the device pins.
    • Place bypass capacitors for VREG5 and VREG3 close to the device pins.
    Routing (Sensitive analog portion)
    • Use small copper space for VFBx. There are short and narrow traces to avoid noise coupling.
    • Connect VFB resistor trace to the positive node of the output capacitor. Routing inner layer away from power
    traces is recommended.
    • Use short and wide trace from VFB resistor to vias to GND (internal GND plane).
    Routing (Power portion)
    • Use wider/shorter traces of DRVL for low-side gate drivers to reduce stray inductance.
    • Use the parallel traces of SW and DRVH for high-side MOSFET gate drive in a same layer or on adjoin
    layers, and keep them away from DRVL.
    • Use wider/ shorter traces between the source terminal of the high-side MOSFET and the drain terminal of the
    low-side MOSFET
    • Thermal pad is the GND terminal of this device. Five or more vias with 0.33-mm (13-mils) diameter connected
    from the thermal pad to the internal GND plane should be used to have strong GND connection and help heat
    dissipation."