we are using LTM4650 regulator in the configuration of two phase single output. When we gone through the application schematics, a feed forward capacitor is used externally in VFB pin. But there is no information about this capacitor in datasheet.
Pls explain the need of feed forward capacitor.
The feedforward capacitor can be added to improve the dynamic response of the feedback loop. Conceptually, at high frequency, C2 provides a low impedance feed-forward path for the output voltage AC signal and therefore, speeds up transient responses
Please refer page 13 on AN149 as below
Thanks for your great response. When I gone through your attachment I came to know C1, C2 are needed to attenuate the switching noise.
LTM4650 datasheet covers C2 capacitor through some application schematic but no where mentioned mentioned about need of C1.
I have attached my LTM4650 schematics. Pls let me know that Am I need to add both C1 and C2 Capacitors? What could be the values?1V_50A_12.5 load.pdf
Also Datasheet is not covered in detail about snubber circuit and how to be calculated & what values can be put with respect to switching frequency ?
I am using Switching frequency in my application is 500KHz.
Pls share the possible C1, C2 and snubber circuit values for the Switching frequency of 500KHz and pls share the procedure for calculating the same.