HiCould any body please help me with the following problem?I have a circuit configured as shown in figure1.Network-1 charges thecapacitor from 0V to 350V (part1 in Fig.2) and discharges it(part2 inFig.2)Network-2 charges & discharges the capacitor from 0V to -100V(part 4 inFig2) and vice versa(part 3 in Fig2).During the operation of the network-1(parts 1&2), network-2 must becompletely disconnected from the capacitor and similarly the network-1must be completely disconnected, while the network-2 is working(parts3&4).* charging & discharging period is about 12.5ms(80Hz).* The connection & disconnection of the networks must happen in a veryshort time.*current flows in both directions in the path between networks and thecapacitor.For this reason I selected switch-1 (MOSFET, N-channel) betweennetwork-1 and the capacitor and switch-2(MOSFET, P-channel) betweennetwork-2 and the cap.(for both switches source is connected to thecap.).switch-1 must be on during parts 1&2.It's source is floated and canreach a voltage about +350V.It must be off while network-2 isworking(parts 3&4), where the source experiences a floating voltage from0V to -100V.Also,switch-1 must have a max-Vg>350V during parts 1&2 and min-Vg<-100during parts 3&4.A similar investigation for the switch-2 results in a min-Vg<-100 duringparts 3&4 and max-vg>350v during parts 1&2.How can I realize drivers for these switches?Drivers must be very smalland dissipate ultra-low power.Or any other Idea to realize the switches, except using MOSFETs?I'll be gratefull if any body can help me with this problem!thank you very much in advance
Fig-1:http://www.4shared.com/photo/alMIR_92/Fig1.html
Tig-2:http://www.4shared.com/photo/xIqZhkYD/Fig2.html
Fig-1:http://www.4shared.com/photo/alMIR_92/Fig1.html
Tig-2:http://www.4shared.com/photo/xIqZhkYD/Fig2.html
Last edited: