Tool/software:
Hi,
I want to calculate the TPS62812-Q1 IC power dissipation with following condition.
Vin: 5.499V (min) to 5.843V (max)
Vout: 1.39V
Iout: 0.69A
Ambient Temp: 105°C
Comp Setting: Comp setting 1 with RCF resistor
Mode Setting: FPWM
Soft start time: 4.8 ms
User preferred frequency: 2.2 Mhz (Rcf = 8.2k)
Input capacitance: 6.09 uF x 3 = 18.27 uF
Input capacitors equivalent maximum ESR: 3.6714 mOhms
Inductance: 0.465 uH
Maximum DC resistance: 27 mOhms
Feed forward cap (Cff): 22pF
Rfbt: 27k
Rfbb: 20.5k
Output capacitance: 9.85 uF x 4 = 39.4 uF
Output capacitors equivalent maximum ESR: 2.7528mOhms
I tried to simulate this with WEBENCH tool, but I could not able to modify the values of individual components as per my requirement. When I try to change the value of one component, the values of other components also changes to initial values. Is this a tool related issue or am I missing anything? please help.
