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BidirectionalSupply

ddowling·BidirectionalSupply·hardware/BidirectionalSupply.kicad_pcb

BidirectionalSupply PCB layout, top view — open source RP2040/RP2350 board by ddowling

About the BidirectionalSupply PCB

BidirectionalSupply is an open source RP2040/RP2350 PCB design by ddowling, published on GitHub. It is a 4-layer board measuring 132 × 107 mm, with 186 components from 50 distinct parts.

Its main chip is the RP2350_60QFN, from the RP2040/RP2350 family. Other key parts include the W25Q128JVS, LM74810QDRRRQ1, BQ25758 and MAX17502EATB+T. By type, the board carries 73 capacitors, 62 resistors, 14 diodes, 12 transistors, 11 connectors and 8 ICs.

It belongs with the power & battery designs in this gallery.

From the project

Hardware and firmware for a bidirectional DC-DC convertor

This is a design for a Bidirectional Buck-Boost DC-DC converter based on the Texas Instruments BQ25758 integrated circuit. The BQ25758 has a wide supply range from 4.2V to 60V and the external MOSFETs and Inductor should support currents up to 10A. This design is closely based on the BQ25758 Evaluation Module. I decided to spin my own board as I wanted to add a microcontroller and four Ideal Diodes with load switches to make a completely standalone board.

Main components on the BidirectionalSupply

W25Q128JVSLM74810QDRRRQ1RP2350_60QFNBQ25758MAX17502EATB+T

BidirectionalSupply bill of materials (BOM)

186 components, 50 distinct parts.

QtyPartRefs
1
W25Q128JVS
U1
4
LM74810QDRRRQ1
U2, U6, U7, U8
1
RP2350_60QFN
U3
1
BQ25758
U4
1
MAX17502EATB+T
U5
12
SIR880BDP
Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8 +4
1
ABM8-272-T3
Y1
1
USB-309GC-B-SU
J1
1
CON10
J2
2
CON2
J3, J7
1
CON4
J6
1
Conn_01x03
J8
1
Conn_01x12
J9
2
Conn_01x02
J10, J13
1
Conn_01x08
J11
1
Conn_01x05
J12
2
SW_Push
SW1, SW2
6
V1FM10-M3/H
D1, D2, D5, D6, D7, D8
8
RED
D3, D4, D10, D11, D12, D13, D14, D15
1
3.3uH
L1
Show 30 more
QtyPartRefs
1
10uH
L2
1
22uH
L3
2
15pF
C1, C2
6
1uF/100VW
C3, C37, C47, C55, C58, C61
18
100nF/25VW
C4, C8, C11, C12, C13, C14, C15, C16 +10
3
10uF/25VW
C5, C17, C62
7
4.7uF/25VW
C6, C7, C9, C10, C34, C35, C63
7
56uF/80VW
C20, C21, C22, C23, C27, C28, C65
2
470nF/16VW
C24, C30
14
100nF/100VW
C25, C26, C29, C31, C36, C38, C39, C48 +6
6
10uF/100VW
C42, C43, C44, C50, C51, C52
4
4.7uF/100VW
C45, C46, C53, C54
2
100pF/100VW
C49, C57
1
1nF/100VW
C60
1
3.3nF
C64
2
5m
R1, R11
4
10R
R2, R3, R10, R12
11
1k
R4, R5, R7, R19, R20, R53, R54, R55 +3
1
33R
R6
2
27R
R8, R9
11
0R
R13, R14, R15, R16, R18, R30, R34, R59 +3
1
DNP
R17
11
10k
R21, R22, R23, R24, R25, R32, R33, R38 +3
2
1k8
R26, R27
2
4k99
R28, R29
1
57k6
R31
4
97k6
R35, R39, R43, R47
4
3k1
R36, R40, R44, R48
4
2k1
R37, R41, R45, R49
2
5k1
R51, R52

BidirectionalSupply design files

The KiCad project lives in the ddowling/BidirectionalSupply repository on GitHub; these links point at the commit this page was built from.

BidirectionalSupply: common questions

What microcontroller does the BidirectionalSupply use?

The BidirectionalSupply is built around the RP2350_60QFN, from the RP2040/RP2350 family.

How big is the BidirectionalSupply PCB?

The BidirectionalSupply measures 132 × 107 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the BidirectionalSupply?

186 components, from 50 distinct parts. The full bill of materials is listed on this page.

Where can I download the BidirectionalSupply design files?

From the ddowling/BidirectionalSupply repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the BidirectionalSupply design in my own project?

The repository has no license, so all rights stay with ddowling. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the BidirectionalSupply without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.

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