Tool/software:
Hi Team,
Could you please help to review this schematic?
If you need any more information, please let me know.
Sw Freq 2.25MHz
Max ambient temperature. 85 ‘C
Tool/software:
Hi Team,
Could you please help to review this schematic?
If you need any more information, please let me know.
Sw Freq 2.25MHz
Max ambient temperature. 85 ‘C
Hi,
- Could you please share customer, project and application details?
- When COMP pin is tied to Vin, the minimum effective output capacitance for Vout < 1 V should be 30uF. With the current 3*10uF, you will not satisfy this requirement.
3*10uF is sufficient when Rcf = 8.06k.
Rest seems fine.
Thanks,
Febin
Adding capacitor is pretty difficult for customer, so adjust RCF is proper.
Vin=3.3V, Vout=0.907V
SSC enable
Could you please calculate Rcf and SW frequency?
Hi Dustin,
For SSC enabled condition, the minimum effective output capacitance for Vout < 1 V should be 30uF.
Thanks,
Febin
Hi Febin,
For SSC,
1.
2.
Questions
- What is the best option (1 or 2) for 3* 10uF? Since customer dont want to add cap but want to enable SSC.
- How about using Rcf range 10kohm ~ 15kohm?
- Is there any other opinion for 3* 10uF and enable SSC?
Hi Dustin,
What is the best option (1 or 2) for 3* 10uF? Since customer dont want to add cap but want to enable SSC.
For SSC enabled config, recommendation is 30uF.
If the customer wants to use a lower Cout, I would suggest to confirm that loop stability and transient performance is as expected in his application.
How about using Rcf range 10kohm ~ 15kohm?
Please use only recommended Rcf values.
Is there any other opinion for 3* 10uF and enable SSC?
Are there any distributed capacitors on this rail?
Thanks,
Febin