T
treez
Guest
Hi,
We are bidding to do a power supply for a high temperature down hole situation. The spec is…
Vin = 500 to 1400V
Vout = 60V
Iout = 5A
Must be isolated output.
The supply cable leading to this buck converter is 10km long but could be as long as 100km….it will have a significant inductance.
(sorry but the above is all I have at the moment)
There won’t be much room for input capacitance, so there is going to be the problem of ringing between the supply cable and the input capacitance of the converter.
Due to the small input capacitance…..there may only be room for a few microfarads…..it is thought that having a front end stage comprising of an input current regulated buck converter may be advantageous….this would basically cancel out the effect of the input supply cable inductance. The output of this buck converter could then be used by a two transistor forward converter to supply the isolated 60V, 5A.
Would you say this would be the optimal way forward? There must be standard solutions for this kind of thing, which must be a well known situation “In the trade”.
We are bidding to do a power supply for a high temperature down hole situation. The spec is…
Vin = 500 to 1400V
Vout = 60V
Iout = 5A
Must be isolated output.
The supply cable leading to this buck converter is 10km long but could be as long as 100km….it will have a significant inductance.
(sorry but the above is all I have at the moment)
There won’t be much room for input capacitance, so there is going to be the problem of ringing between the supply cable and the input capacitance of the converter.
Due to the small input capacitance…..there may only be room for a few microfarads…..it is thought that having a front end stage comprising of an input current regulated buck converter may be advantageous….this would basically cancel out the effect of the input supply cable inductance. The output of this buck converter could then be used by a two transistor forward converter to supply the isolated 60V, 5A.
Would you say this would be the optimal way forward? There must be standard solutions for this kind of thing, which must be a well known situation “In the trade”.