Atmel AVR430: MC300 - Manuals

Page 2 - Hardware overview; high side must be turned off for a short; , allowing the capacitor to be recharged via a diode. Failing

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 control driver board is a power stage board intended for driving BLDC and stepper motors. It has four half-bridges with independent control of high and low sides...

Page 4 - Designator; – VHa not connected

4 AVR430 8124C-AVR-10/08 Figure 2-2. Device board connector mechanical specification and schematics. 2.3 Jumpers Refer to component floorplan for location of jumpers. Table 2-1. Jumpers and their functions. Designator Use and settings J1 (VHa) Selects voltage source to Hall sensors (VHa) J1 open – V...

Page 5 - MC300 device board connector signal description.; Pin

AVR430 5 8124C-AVR-10/08 Table 2-2. MC300 device board connector signal description. Pin Located Name Direction Description 1 J9p1 GND - 2 J9p2 GND - System ground (Vin/VCC) 3 J9p3 GND - 4 J9p4 Vin Output Input power Vin (10-20V) 5 J9p5 VCC Output 6 J9p6 VCC Output Regulated power Vcc (3.3V/5V) 7 J9...

Page 7 - Schematics, component floorplan and bill of materials

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 bloc...

Page 8 - Detailed description

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 regulators, and Vmotor (Vm) for powering the output stage (MOSFETs). The separate power supply for the motor, Vm, allows the use of motor voltages outside the voltage r...

Page 9 - Phase U half bridge.; will increase. This may result in high power dissipation in the

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 motors. With J1 VHa can be connected to Vcc or to a 5V regulator (U2). A separate 5V regulator for the Hall sensors is included so Vcc can be 3,3V while using Hall sen...

Page 10 - Shunt resistor network.

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 resistors are zero ohm resistors, shown in Figure 4-3. This allows for measurement of the total current going to ground via all half bridges. Figure 4-3. Shunt r...

Page 12 - Component name; Additional decoupling capacitors on Vm

12 AVR430 8124C-AVR-10/08 4.5 Upgrading the MC300 As the board is shipped, its limitations are Vm max =40V and Im max =6A. These limits can be increased by replacing the relevant components (not included). 4.5.1 Voltage limitations If a Vm max higher than 40V is required, then some components must b...

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) 487-2600 Atmel Asia Room 1219 Chinachem Golden Plaza 77 Mody Road Tsimshatsui East Kowloon Hong Kong Tel: (852) 2721-9778 Fax: (852) 2722-1369 Product Contact A...