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求大神帮忙check LMZ22003电源芯片设计的1.3V输出电路@TI



输入电压为源自PCIE插槽的12V电压,EN使能端接3.3V电压,输出电压为1.3V,求大神check是否合理?

  • Hi

          主要注意输入输出电容,输入建议稍微加大一点点。

          输出电容,主要注意选择较低ESR的电容:  A minimum value of 200 μF is required based on the values of internal compensation in the error amplifier. Low ESR tantalum, organic semiconductor or specialty polymer capacitor types are recommended for obtaining lowest ripple. The output capacitor CO may consist of several capacitors in parallel placed in close proximity to the module.