AVR430
7
8124C-AVR-10/08
3.1.1 Phase area
Each phase has its own area with a frame drawn on silkscreen. In Figure 3-2 the area
for phase ‘V’ is shown, and everything inside this frame regards this phase only.
Figure 3-2.
Phase ‘V’ area on MC300 PCB.
From the left we see:
1. Shunt filter/damping block – denoted ‘Sh’
2. Back EMF filter/damping block – denoted ‘EMF’
3. Shunt resistor testpoints – denoted ‘-‘ and ‘+’ (above shunt resistor)
4. Bootstrap voltage testpoint – denoted ‘Vboot’
5. MOS Gate voltage testpoints – denoted ‘VGl’ (low side) and ‘VGh’ (high side)
3.1.2 Common shunt and filters/dividers
The common shunt (R62) with testpoints is found above phase ‘U’ and denoted
‘ShCom’. Filters/dividers for Vm, ShCom and Vn are found on the left of the phase
areas.
3.2 Schematics, component floorplan and bill of materials
The schematics, component floorplan and bill of materials (BOM) for MC300 are
found as separate PDF files distributed with this application note, they can be
downloaded from http://www.atmel.com.
