Power Board
About the Power Board
Power Board is an open source PCB design by Open-Vent-Bristol, published on GitHub under the MIT license. It is a 2-layer board measuring 174 × 57.5 mm, with 79 components from 59 distinct parts.
Other key parts include the LT3796, LT1936, LT6106, VNH5019ATR-E and LTC4416. By type, the board carries 32 resistors, 19 capacitors, 7 ICs, 7 connectors, 6 diodes and 4 transistors.
From the project
KiCad PCB repo for V3.0 of OpenVent-Bristol COVID-19 ventilator
OpenVent controller PCB, version A (KiCad) ported from version 2.7 (Altium, incomplete), 2020-10-20, by Jeff Sutherland
All files for the Power Board are in the subfolder called "OVPower". All control/main board files are in this folder level. Electronic system diagram and overall device system diagram can be found here: https://docs.google.com/presentation/d/e/2PACX-1vRULcGT6Jc9GJDVb21LnrkGW9OiDjC7QJ2lRb0DsiA6KYFimniAMwYWqoMfq-0fJhvekxmhCl915fU4/pub?start=false&loop=true&delayms=3000&slide=id.gb10047446c0_106 Also found by clicking "build" on https://openventbristol.co.uk/
Main components on the Power Board
Power Board bill of materials (BOM)
79 components, 59 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LT3796 | TSSOP-28-LTvar_EB_4.4x9.7mm_P0.65mm | U1 |
| 1 | LT1936 | LT_MS8E | U2 |
| 1 | LT6106 | TSOT-23-5 | U3 |
| 1 | VNH5019ATR-E | ST_MultiPowerSO-30 | U4 |
| 1 | LTC4416 | MSOP-10_3x3mm_P0.5mm | U7 |
| 2 | AOSD21307 | SOIC-8_3.9x4.9mm_P1.27mm | U8, U9 |
| 1 | SSM3K341R | SOT-23 | Q1 |
| 1 | 2N7002BK | SOT-23 | Q2 |
| 2 | SZNUD3124LT1G | SOT-23 | Q3, Q4 |
| 1 | Kycon_kpjx-4s_shielded | Kycon_KPJX-4S_SHIELD | J1 |
| 1 | Conn_HDR_2x10_latching | 3M_D3428-6302-AR | J2 |
| 1 | 532530670 | Molex_Micro-Latch_53253-0670_1x06_P2.00mm_Vertical | J3 |
| 1 | Conn_01x03_JST_B3P_Vert | JST_B3P-VH(LF)(SN) | J4 |
| 2 | CONN_HEADER_2.54X2_MOLEX_KK_Series | Molex_KK-254_AE-6410-02A_1x02_P2.54mm_Vertical | J6, J7 |
| 1 | CONN_HEADER_R_A_2POS_JST_10A | JST_B2PS-VHLSN | J8 |
| 1 | Polyfuse_10A | LF_16R1000G | F1 |
| 1 | R_Thermistor_0603_10K_NTC | R_0603_1608Metric | RT1 |
| 2 | MBRS260T3G | D_SMB | D1, D3 |
| 1 | MMBD914 | SOT-23 | D2 |
| 1 | S1B | D_SMA | D4 |
Show 39 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LED_GREEN_0603_SMD | LED_0603_1608Metric | D5 |
| 1 | LED_Red_0603_SMD | LED_0603_1608Metric | D6 |
| 1 | MSD1260-333 | MSD1260 | L1 |
| 1 | L_22uH_2.6A_42mOhm_SMT | L-Bourns-SRU1048-series | L2 |
| 5 | 100nF_0603_Ceramic_Capacitor,_10%,_X7R,_25V | C_0603_1608Metric | C1, C4, C10, C14, C15 |
| 2 | 10nF_0603_Ceramic_Capacitor,_10%,_50V,_X7R- | C_0603_1608Metric | C2, C3 |
| 1 | C_0603_0.22uf_25V_10% | C_0603_1608Metric | C5 |
| 1 | 2.2uF_2824_film_capacitor_10%_40V | CAPPC7360X380N | C6 |
| 1 | 10uF_0805_Ceramic_Capacitor_10%_X7R_10V | C_0805_2012Metric | C7 |
| 2 | C_1210_10uF_25V_10%_X7R | C_1210_3225Metric | C8, C13 |
| 1 | 1uF_0603_Ceramic_Capacitor,_10%,_50V,_X5R | C_0603_1608Metric | C9 |
| 6 | 1000uF_25V_Aluminium_SMD_Capacitor,_20% | CP_Elec_10x10 | C11, C12, C16, C17, C18, C19 |
| 1 | R_0603_806K_0.1W_1% | R_0603_1608Metric | R1 |
| 1 | 20k_0603_Chip_Resistor,_1%,_0.1W | R_0603_1608Metric | R2 |
| 1 | R_0603_499R_0.1W_1% | R_0603_1608Metric | R3 |
| 1 | R_0603_40k2K_0.1W_1% | R_0603_1608Metric | R4 |
| 1 | R_0603_19k6_0.1W_1% | R_0603_1608Metric | R5 |
| 1 | R_0603_499K_0.1W_1% | R_0603_1608Metric | R6 |
| 1 | R_0603_97.6K_0.1W_1% | R_0603_1608Metric | R7 |
| 1 | 100K_0603_Chip_Resistor,_1%,_0.1W | R_0603_1608Metric | R8 |
| 1 | R_0603_2k_0.1W_1% | R_0603_1608Metric | R9 |
| 1 | R_0805_050m_cursense | R_0805_2012Metric | R10 |
| 1 | R_0603_015m_cursense | R_0603_1608Metric | R11 |
| 1 | R_0603_53K_0.1W_1% | R_0603_1608Metric | R12 |
| 1 | 10k_0603_Chip_Resistor,_1%,_0.1W | C_0603_1608Metric | R13 |
| 1 | R_0603_49k9_0.1W_1% | R_0603_1608Metric | R14 |
| 1 | R_1206_250m_cursense | R_1206_3216Metric | R15 |
| 1 | R_0603_113k_0.1W_1% | R_0603_1608Metric | R16 |
| 1 | R_0603_30k1_0.1W_1% | R_0603_1608Metric | R17 |
| 1 | R_0603_95k3_0.1W_1% | R_0603_1608Metric | R18 |
| 1 | R_0603_10k2_0.1W_1% | R_0603_1608Metric | R19 |
| 1 | R_0603_100_0.1W_0.1% | R_0603_1608Metric | R20 |
| 1 | R_2512_15m_cursense | R_2512_6332Metric | R21 |
| 1 | R_0603_2k74_0.1W_0.1% | R_0603_1608Metric | R22 |
| 6 | 1K_0603_Chip_Resistor,_1%,_0.1W | R_0603_1608Metric | R23, R24, R25, R26, R27, R31 |
| 1 | R_0603_178K_0.1W_1% | R_0603_1608Metric | R36 |
| 1 | R_0603_24k9_0.1W_1% | R_0603_1608Metric | R37 |
| 1 | R_0603_221K_0.1W_1% | R_0603_1608Metric | R38 |
| 1 | 10k_0603_Chip_Resistor,_1%,_0.1W | R_0603_1608Metric | R39 |
Power Board design files
The KiCad project lives in the Open-Vent-Bristol/OpenVent-Bristol_KiCad repository on GitHub; these links point at the commit this page was built from.
Power Board: common questions
How big is the Power Board?
The Power Board measures 174 × 57.5 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Power Board?
79 components, from 59 distinct parts. The full bill of materials is listed on this page.
Where can I download the Power Board design files?
From the Open-Vent-Bristol/OpenVent-Bristol_KiCad repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Power Board design in my own project?
Yes, under the terms of its MIT license, which Open-Vent-Bristol chose for the repository.
