XT0LU8f2

sync buck

 
Overview
Here are some test parameters   
 
input:12V,output:5V5A:  
Ripple:<100mV  
PSRR:14dB  

input:12V,output:5V1A:  
Ripple:<60mV  
PSRR:10dB  

input:12V,output:5V0A:  
Ripple:<60mV  
PSRR:-4dB  

input:18V,output:5V2A:  
Ripple:<70mV  
PSRR:16dB  
 (too much)  

Inductor and capacitor selection reference datesheet  
The mos tube should have low Rson and low Vgs. It is best to use the tubes indicated on the datesheet for synchronous rectification. 
I refer to this person for peripheral circuits , thank you  
Project files on GitHub  

参考设计图片
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Update:2025-06-23 10:44:57

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