Power Processing Unit
AssemblyBox of switching converters that turns the spacecraft bus into the thruster's six supplies, 1,100 V beam, discharge, accel, keepers, heaters, at ~94% efficiency, with fault logic that rides through grid arcs. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.
Bill of materials for Power Processing Unit
7 top-level lines as of r91274| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | Beam Supply 5 parts | ion-thruster-beam-supply | 1× | 1 | 0 | assembly |
| 2 | Discharge Supply 4 parts | ion-thruster-discharge-supply | 1× | 1 | 0 | assembly |
| 3 | Accel Grid Supply | ion-thruster-accel-supply | 1× | 1 | · | part |
| 4 | Heater/Keeper Supply | ion-thruster-heater-keeper-supply | 2× | 2 | · | part |
| 5 | PPU Controller 4 parts | ion-thruster-ppu-controller | 1× | 1 | 0 | assembly |
| 6 | PPU Chassis | ion-thruster-ppu-chassis | 1× | 1 | · | part |
| 7 | Bus Input Filter | ion-thruster-input-filter | 1× | 1 | · | part |