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TPS62420: SCH review

Jingguo Wang
Intellectual 1240 points
Part Number: TPS62420

Tool/software:

Hi team,

My customer choose the TPS62420 in their solar system. Could you help to review the SCH? if any suggestions, pls let me now.

BR

Jingguo

  • 0
    TI__Genius 15820 points

    Hello Jingguo,

    thanks for reaching out in E2E.

    I reviewed the schematic and here are my comments:

    • The voltage divider of converters 1 could be made with higher resistor values to minimize the operating current if need. Per section 9.1.1.1 in the datasheet a range of 180 kΩ to 360 kΩ is recommended.
    • The voltage divider of converters 2 could be made with higher resistor values to minimize the operating current if need. But the sum of R3, R5 and R6 should not exceed ~1 MΩ.
    • C10 is recommended as 33pF.
    • For operation with a 2.2-μH inductor, a 22-μF output capacitor is suggested. (The device is optimized to operate with inductors of 2.2 μH to 4.7 μH and output capacitors of 10 μF to 22 μF.)

    Let me know if you have any questions.

    Best regards,

    Andreas.