Figure 3-7 shows the system
power tree used for multiple voltage domains across the system for powering discrete
components.
- A primary voltage of 15 V (bench
supply) to power up the auxiliary power tree components
- 12 V for cooling fan control
- 5 V and 3.3 V to drive the gate
driver cards and DC bus HV sense cards
- On gate driver card isolated +15
V and –4 V are generated for biasing gate driver
- On HV sense card isolated +3.3 V
is generated for biasing isolated amplifier