Atmel 8-bit AVR Microcontrollers AVR430: MC300 Manual do Utilizador

AVR430: MC300 Hardware User Guide Features • General-purpose power stage for DC and stepper motors • Modular system with 2,54mm pin header

10 AVR430 8124C-AVR-10/08 4.3 Shunts The board is shipped with a common shunt resistor (ShCom - R62) of 0,050 ohm and the four phase shunt

AVR430 11 8124C-AVR-10/08 4.4 Back-EMF For sensorless applications, the driving logic uses back EMF from the motor’s phases to keep track of

12 AVR430 8124C-AVR-10/08 4.5 Upgrading the MC300 As the board is shipped, its limitations are Vmmax=40V and Immax=6A. These limits can be incr

8124C-AVR-10/08 D Headquarters International Atmel Corporation 2325 Orchard Parkway San Jose, CA 95131 USA Tel: 1(408) 441-0311 Fax: 1(408)

2 AVR430 8124C-AVR-10/08 2 Hardware overview Please refer to schematics, layout and BOM available at http://www.atmel.com. The MC300 motor c

AVR430 3 8124C-AVR-10/08 2.2 Connections Figure 2-1. MC300 with device board, connector details and prototype board fitted. 2.2.1 Device board

4 AVR430 8124C-AVR-10/08 Figure 2-2. Device board connector mechanical specification and schematics. 2.3 Jumpers Refer to component floorplan

AVR430 5 8124C-AVR-10/08 Table 2-2. MC300 device board connector signal description. Pin Located Name Direction Description 1 J9p1 GND

6 AVR430 8124C-AVR-10/08 3 PCB 3.1 PCB Layout The MC300 is organized as shown in Figure 3-1. Most signals, important components and jumper in

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

8 AVR430 8124C-AVR-10/08 4 Detailed description 4.1 Power The MC300 has two power circuits. Vin for powering driver ICs and voltage

AVR430 9 8124C-AVR-10/08 4.1.4 Hall sensors VHall (VHa) is available on J7 as power source for Hall sensors, typically found on BLDC m