!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
NOT TESTED - - AS IS
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
To do:
-Make schematics more readable for human.
-optional version with signal/voltage isolation
Changelog:
-Increasing the width of GND return path
-Replaced not needed resistors.
As per comment in:
(...) Certainly you can remove pull up resistor on SCL SDA line ,only one on each line is usefull:
R27 R28 , R32 R33 , R38 R39 are not necessary .Keep only R20 and R21.
(...)
-Increase size of traces carrying current to motor by ~80%.
From 1,5 to 2,6 mm
If someone needed the more current version, please check the requirement using PCB width track calculator (IPC-2221), then one options to choose:
IPC-2221 Calculator for PCB Trace Current and Heating
The IPC-2221 standard provides guidance on trace current limit calculations for a given temperature rise limit.
resources.altium.com
-PCB laminate with higher copper thickness
- option to remove (in Kicad) lacquer layer, above the PCB tracks. Then exposed tracks can be tinned by soldering iron.
-increase size of tracks on the PCB boards by increasing size of the board.
-As per comment:
(...) Why not simply fix all I2C adress and remove all I2C adress selection jumper to simplify circuit(...).
Hard coded the I2C adresses. Removing jumpers:
From config:
Inabatadress=64 =>0x40 => A0 A1 on GND
Inamowadress=65 =>0x41 => A0 on VCC
Inaleftadress=68 => 0x44 => A1 on VCC
Inarightadress=69 => A0 + A1 on VCC
Post in thread 'PowerPCB 1.09' PowerPCB 1.09
Post in thread 'PowerPCB 1.09' PowerPCB 1.09
-Changes the scheme to include mod to protect from high Ugs gate of Mosfet:
Post in thread 'PowerPCB 1.09' PowerPCB 1.09
What is the maximum gate voltage for a MOSFET? What happens if we exceed this voltage?
Answer (1 of 2): Mosfets (Metal Oxide Semiconductor Field Effect Transistors) have a breakdown voltage on their gates. This is because it has a very thin oxide (insulator) that separates the gate from the channel between the source and drain. That thin oxide can ‘arc’ or break down if this voltag...
Gate driver and P-CH MOSFET Load Switch Evaluation Board Options
Hello, I'm new to the gate driver community. Have a question for the community. I've been using Vishay SUP70101EL P-Channel MOSFETs (https://www.vishay.com/docs/77632/sup70101el.pdf) for load switch applications. For my applications so far, turn-on time has been more important so I've been...
Please also read previous posts:
Based on:
github.com
Version for Landrumower and Teensy (different file in attachement).
To do:
-UNTESTED!!!!
-Replace components for LSCS versions to be SMT machine assembled.
Because the components stock can change in time in lcsc warehouse. The production file should really be done, before sending file for production:
The easy way is to assign lcsc components id in scheme (that are currently in stock). And use the Kicad plugin (using plugin manager) to generate all files...
TeensyMower-PCBs/Power_PCB_v100small at main · Starsurfer78/TeensyMower-PCBs
PCB's Folder for Teensy 4.1 based Robot Lawn Mower - Starsurfer78/TeensyMower-PCBs
github.com
Version for Landrumower and Teensy (different file in attachement).
To do:
-UNTESTED!!!!
-Replace components for LSCS versions to be SMT machine assembled.
Because the components stock can change in time in lcsc warehouse. The production file should really be done, before sending file for production:
The easy way is to assign lcsc components id in scheme (that are currently in stock). And use the Kicad plugin (using plugin manager) to generate all files...
To do:
-make scheme readable.
Changes:
Link:
Version 1.00
Version 1.01
Version 1.02
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
NOT TESTED - - AS IS
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
-INA226 chips on main board for SMT assembly.
-Shunt resistor for 8A current.
-adding protecting circuit input as in reference note. (TIDU473)
-Version with selectable 16 - I2C addresses.
-Modyfied thickness of thermal reliefs.
-Replaced diodes for available in Lcsc stock.
-Adding more copper GND filling zones.
-Rounded PCB edges.
One more reason to not use...
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