The MC303 processor board can connect directly to a driver board (typically the MC300 power board). This is accomplished by a horizontal male pin header connectors located on the right side of the board, shown inFigure 1.
The device board interface on MC303 connector is split into four eight-pin connectors. Electric schematics and mechanical specifications are shown in PCB Layout and signal description in the table below.
| Pin | Located | Name | Direction | Description |
|---|---|---|---|---|
| 1 | J1p1 | GND | - | |
| 2 | J1p2 | GND | - | System ground (Vin/VCC) |
| 3 | J1p3 | GND | - | |
| 4 | J1p4 | Vin | Input | Input power Vin (10-20V) |
| 5 | J1p5 | VCC | Input | |
| 6 | J1p6 | VCC | Input | Regulated power Vcc (3.3V/5V) |
| 7 | J1p7 | VCC | Input | |
| 8 | J1p8 | GND | - | System ground (Vin/VCC) |
| 9 | J2p1 | UH | Output | Phase U Highside control output |
| 10 | J2p2 | UL | Output | Phase U Lowside control output |
| 11 | J2p3 | VH | Output | Phase V Highside control output |
| 12 | J2p4 | VL | Output | Phase V Lowside control output |
| 13 | J2p5 | WH | Output | Phase W Highside control output |
| 14 | J2p6 | WL | Output | Phase W Lowside control output |
| 15 | J2p7 | XH | Output | Phase X Highside control output |
| 16 | J2p8 | XL | Output | Phase X Lowside control output |
| 17 | J3p1 | GNDm | - | Motor ground (Vmotor) |
| 18 | J3p2 | Vmotor' | Input | Vmotor filtered/divided |
| 19 | J3p3 | ShCom' | Input | Voltage over ShCom filtered/divided |
| 20 | J3p4 | ShU' | Input | Voltage over ShU filtered/divided |
| 21 | J3p5 | U' | Input | BackEMF phase U filtered/divided |
| 22 | J3p6 | ShV' | Input | Voltage over ShV filtered/divided |
| 23 | J3p7 | V' | Input | BackEMF phase V filtered/divided |
| 24 | J3p8 | ShW' | Input | Voltage over ShW filtered/divided |
| 25 | J4p1 | W' | Input | BackEMF phase W filtered/divided |
| 26 | J4p2 | ShX' | Input | Voltage over ShX filtered/divided |
| 27 | J4p3 | X' | Input | BackEMF phase X filtered/divided |
| 28 | J4p4 | GND | - | System ground (Vin/VCC) |
| 29 | J4p5 | H1 | Input | Hall sensor 1 signal |
| 30 | J4p6 | H2 | Input | Hall sensor 2 signal |
| 31 | J4p7 | H3 | Input | Hall sensor 3 signal |
| 32 | J4p8 | Vn' | Input | Vn (neutral point) filtered/divided |
| 25 | J4p9 | PFC_OC | Input | Power Factor Corrector Over Current signal |
| 26 | J4p10 | nc | - | |
| 27 | J4p11 | PFC_ZC | Input | Power Factor Corrector Zero Crossing signal |
| 28 | J4p12 | nc | - | |
| 29 | J4p13 | FAULT | Input | Fault signal from Power board |
| 30 | J4p14 | Temp | Input | Temperature sensor input |
| 31 | J4p15 | nc | - | |
| 32 | J4p16 | Spare | Input/Output | Reserved |
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