Description
sensorless BLDC control hardware (less the microcontroller) - provides a simplified interface to a microcontroller to control a sensorless BLDC motor (such as used in R.C. craft). back EMF signals are put through a comparator and the 3-phase control signals are encoded one 3 lines rather than 6.
Currently tested using Parallax Propeller code (to be released) and various brushless motors in the 30 to 600W range.
Schematic
Board
Bill of Materials
| Designator | Value | Description |
|---|---|---|
| C1 | 33nF | CAPACITOR, European symbol |
| C2 | 33nF | CAPACITOR, European symbol |
| C3 | 33nF | CAPACITOR, European symbol |
| C4 | 22uF 16V | CAPACITOR, European symbol |
| C5 | 22uF 16V | CAPACITOR, European symbol |
| C6 | 22uF 16V | CAPACITOR, European symbol |
| C7 | 22uF 16V | CAPACITOR, European symbol |
| C8 | 100nF 50V | CAPACITOR, European symbol |
| C9 | 1uF 25V | CAPACITOR, European symbol |
| C10 | 100nF 50V | CAPACITOR, European symbol |
| C11 | 100nF 50V | CAPACITOR, European symbol |
| C12 | 100nF 50V | CAPACITOR, European symbol |
| C13 | 100nF 50V | CAPACITOR, European symbol |
| C14 | 100nF 50V | CAPACITOR, European symbol |
| C15 | 100nF 50V | CAPACITOR, European symbol |
| IC1 | 74AC138D | 3-line to 8-line DECODER/DEMULTIPLEXER |
| IC2 | 74AC00D | Quad 2-input NAND gate |
| IC3 | 74AC00D | Quad 2-input NAND gate |
| IC4 | LM339D | Low Power Low Offset Voltage Quad Comparators |
| LED1 | LED | LED |
| R1 | 1k | RESISTOR, European symbol |
| R2 | 1k | RESISTOR, European symbol |
| R3 | 1k | RESISTOR, European symbol |
| R4 | 10k | RESISTOR, European symbol |
| R5 | 10k | RESISTOR, European symbol |
| R6 | 10k | RESISTOR, European symbol |
| R7 | 10k | RESISTOR, European symbol |
| R8 | 10k | RESISTOR, European symbol |
| R9 | 10k | RESISTOR, European symbol |
| R10 | 10k | RESISTOR, European symbol |
| R11 | 10k | RESISTOR, European symbol |
| R12 | 10k | RESISTOR, European symbol |
| R13 | 10k | RESISTOR, European symbol |
| R14 | 20k | RESISTOR, European symbol |
| R15 | 2k2 | RESISTOR, European symbol |
| R16 | 2k2 | RESISTOR, European symbol |
| R17 | 2k2 | RESISTOR, European symbol |
| R18 | 2k2 | RESISTOR, European symbol |
| R19 | 2k2 | RESISTOR, European symbol |
| R20 | 10k | RESISTOR, European symbol |
| R21 | 10k | RESISTOR, European symbol |
| SV1 | FEMALE HEADER | |
| SV2 | PIN HEADER | |
| U$1 | FAN7388 | FAN7388 600V 3-phase bridge MOSFET driver |
| U$2 | IRLR3717 | IRLR3717 20V 100A 4mOhm logic level DPAK MOSFET |
| U$3 | IRLR3717 | IRLR3717 20V 100A 4mOhm logic level DPAK MOSFET |
| U$4 | IRLR3717 | IRLR3717 20V 100A 4mOhm logic level DPAK MOSFET |
| U$5 | IRLR3717 | IRLR3717 20V 100A 4mOhm logic level DPAK MOSFET |
| U$6 | IRLR3717 | IRLR3717 20V 100A 4mOhm logic level DPAK MOSFET |
| U$7 | IRLR3717 | IRLR3717 20V 100A 4mOhm logic level DPAK MOSFET |
| U$8 | SS24 | SS24 40V 2A Schottky diode, 50A pulse 1.3W |
| U$9 | SS24 | SS24 40V 2A Schottky diode, 50A pulse 1.3W |
| U$10 | SS24 | SS24 40V 2A Schottky diode, 50A pulse 1.3W |
| U$11 | AP1117-REG | |
| U$12 | ACS711 | ACS711 Hall effect current sensor |
[JSON]
This project is © Mark Tillotson, and is published under the terms of the Creative Commons Attribution-ShareAlike 3.0 Unported licence.