2 layers110.7 × 40.8 mm Isolated, the printed circuit board in 3D

Isolated

12VDC to 300VDC isolated SMPS

Size: 110.7 × 40.8 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 68
Nets: 47
Pads: 167
Tracks, vias: 376, 70
Pours: 2
Routed: Yes
KiCad: KiCad 6 (file 20211014)
Created: 10 Apr 2023
Updated: 31 Jul 2023

Overview

Isolated is an open-source printed circuit board by siro20, from the siro20/isolated_stepup repository on GitHub, published under the MIT licence. It is a 2-layer board of 110.7 × 40.8 mm with 68 parts on 47 nets, routed with 376 tracks and 70 vias.

It is built around the TCMT1103, IHLP2020CZER4R7M1A and MBR735, with the 2N7002H, FQP27P06 and MB4S among its other parts. Its parts include 27 resistors, 16 capacitors, 7 diodes, 4 transistors and 4 inductors.

Main components

README

Readme.md

Isolated 12VDC to 300VDC SMPS

This project is about finding a power supply to drive regular 240VAC/120VAC LED bulbs from a 12V power supply or 12V battery.

This is the first prototype build using the LTC3723.

It features:

Up to 32 Watts
LC input filter
Soft-start
3 Amps input current limit
Galvanic isolation
Adjustable output voltage (for development only)

Analysis

Measured results of version 0.2.

soft-start

Schematics

Safety advice

text

Design, installation and inspection of machinery and devices carrying high voltage
require accordingly trained and qualified personnel.
Appropriate safety rules and directives must be complied with.
Improper handling of high voltage can mean severe injuries or death and may cause
serious collateral damage!

Disclaimer

text

THE OPEN SOURCE SOFTWARE/HARDWARE IN THIS PROJECT IS DISTRIBUTED
IN THE HOPE THAT IT WILL BE USEFUL, BUT WITHOUT ANY WARRANTY, WITHOUT
EVEN THE IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE.

Parts

Qty	Value	Footprint	References
4	MountingHole	MountingHole:MountingHole_2.7mm_M2.5_DIN965_Pad	H1, H2, H3, H4
3	10k	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R10, R21, R23
2	IRLIZ 34N	Package_TO_SOT_THT:TO-220-3_Vertical	Q1, Q2
2	0	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R25, R26
2	0.22	Resistor_SMD:R_2512_6332Metric_Pad1.40x3.35mm_HandSolder	R9, R11
2	1	Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder	R3, R24
2	1n	Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder	C11, C13
2	1u	Capacitor_SMD:C_1210_3225Metric_Pad1.33x2.70mm_HandSolder	C2, C12
2	2u2	Capacitor_SMD:C_1210_3225Metric_Pad1.33x2.70mm_HandSolder	C1, C15
2	330p	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder	C5, C8
2	4u7	Capacitor_THT:C_Radial_D12.5mm_H20.0mm_P5.00mm	C16, C18
2	80	Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder	R8, R14
2	IHLP2020CZER4R7M1A	Inductor_SMD:L_Sunlord_MWSA05xxS	L1, L4
2	LED	LED_THT:LED_D3.0mm_Clear	D1, D3
2	MBR735	Package_TO_SOT_THT:TO-220-2_Vertical	D4, D5
2	Screw_Terminal_01x02	Connector_Phoenix_MC_HighVoltage:PhoenixContact_MCV_1,5_2-G-5.08_1x02_P5.08mm_Vertical	J1, J2
1	0	Resistor_SMD:R_0805_2012Metric	R17
1	0	Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder	R27
1	100k	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R7
1	100u	Capacitor_THT:C_Radial_D10.0mm_H12.5mm_P5.00mm	C10
1	10u	Capacitor_THT:C_Radial_D8.0mm_H11.5mm_P3.50mm	C17
1	10u	Capacitor_SMD:C_1210_3225Metric_Pad1.33x2.70mm_HandSolder	C7
1	12k	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R22
1	1k	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R1
1	1k2	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R15
1	1k5	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R2
1	1meg	Resistor_THT:R_Axial_DIN0309_L9.0mm_D3.2mm_P5.08mm_Vertical	R18
1	1meg	Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P5.08mm_Vertical	R19
1	22n	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder	C9
1	270p	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder	C4
1	2N7002H	Package_TO_SOT_SMD:SOT-23	Q3
1	39k	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R12
1	3V	Diode_THT:D_DO-34_SOD68_P2.54mm_Vertical_KathodeUp	D2
1	3k3	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R16
1	470	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R6
1	470n	Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder	C3
1	66k	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R13
1	720	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R5
1	75k	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R4
1	7687480472	Inductor_THT:L_Radial_D12.0mm_P5.00mm_Neosid_SD12_style2	L2
1	FQP27P06	Package_TO_SOT_THT:TO-220-3_Vertical	Q4
1	L-PIS2812 680u	Inductor_SMD:L_Vishay_IHLP-2020	L3
1	LTC3723-2	Package_SO:SSOP-16_3.9x4.9mm_P0.635mm	U1
1	MB4S	Package_TO_SOT_SMD:TO-269AA	D6
1	R_Trim	Potentiometer_THT:Potentiometer_Bourns_3386C_Horizontal	R20
1	TCMT1103	Package_SO:SOP-4_4.4x2.6mm_P1.27mm	U2
1	TL431DBZ	Package_TO_SOT_SMD:SOT-23	U3
1	VS-HFA08TA60C-M3	Package_TO_SOT_THT:TO-220-3_Vertical	D7
1	Wuerth_750811914	750811914:750811914	TR1

Questions

How big is the Isolated PCB?

It measures 110.7 × 40.8 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Isolated use?

68 parts, built around the TCMT1103, IHLP2020CZER4R7M1A, MBR735 and 2N7002H. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the Isolated KiCad files?

From the siro20/isolated_stepup repository on GitHub, at the commit this page was made from: the board is isolated/isolated.kicad_pcb and its schematic isolated/isolated.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Isolated design in my own project?

Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/siro20-isolated-stepup" title="Isolated in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>

A picture

<img src="https://pcbkit.io/embed/boards/siro20-isolated-stepup.jpg" alt="Isolated" width="1200" height="900">

A picture that opens the board, for a README

[![Isolated](https://pcbkit.io/embed/boards/siro20-isolated-stepup.jpg?size=s)](https://pcbkit.io/boards/siro20-isolated-stepup)

Source

Repository: siro20/isolated_stepup
Board file: isolated/isolated.kicad_pcb
Commit: 12dd3e1
Licence: MIT

Similar boards

4 layers99.1 × 57.1 mm
VehicleController
UNCAMotorsports/UNCAMotorsports-2017

147 parts2MIT
2 layers200 × 100 mm
Ele713 ozdisan v1
eliftplgl/ELE713-Two-Switch-Flyback

81 parts
2 layers218.6 × 132.6 mm
Encoder óptico tipo 2
F-Iglesias/Balancin
A self-balancing robot I made in 2023 as final project for my electronics technical program in high-school.
90 parts
2 layers93.5 × 50 mm
Version current
oomlout/oomlout_oomp_project_src

109 parts
2 layers78.1 × 50.2 mm
RMTS
reilleya/RMTS-Hardware
DAQ and ignition system for solid rocket motors
84 parts15
2 layers70 × 60 mm
Breakout ag1171
ardavast/ajustage

28 partsGPL-3.0
2 layers42 × 70 mm
POE
cdntinker/In-Wall-POE
Working on a standalone POE to USB PSU...
23 parts
2 layers154 × 91 mm
RetroLink
N1UGK/RetroLink_Public
RetroLink connects a standard POTS (Plain Old Telephone Service) analog telephone to the Internet over Wi-Fi, allowing peer-to-peer calling between devices and retro telephony interfacing.
95 parts