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Digital-Synchronous-Buck-Converter

BenjaminMeyerEE·Digital-Synchronous-Buck-Converter·hardware/synch_buck_digital.kicad_pcb

Digital-Synchronous-Buck-Converter PCB layout, top view — open source board by BenjaminMeyerEE

About the Digital-Synchronous-Buck-Converter PCB

Digital-Synchronous-Buck-Converter is an open source PCB design by BenjaminMeyerEE, published on GitHub. It is a 4-layer board measuring 52.8 × 49.6 mm, with 41 components from 26 distinct parts.

Other key parts include the BSC066N06NSATMA1 and INA241A3IDDFR. By type, the board carries 5 resistors, 3 ICs, 1 diode and 1 inductor.

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

From the project

12 V to 6 V, 10 A synchronous buck converter with closed-loop digital control on an STM32G474RET6. Custom 4-layer board in KiCad. The firmware runs a 400 kHz PI voltage loop with hardware-enforced dead-time and a comparator overcurrent trip that doesn't depend on the CPU.

12 V to 6 V, 10 A synchronous buck converter with closed-loop digital control on an STM32G474RET6. Custom 4-layer board in KiCad. The firmware runs a 400 kHz PI voltage loop with hardware-enforced dead-time and a comparator overcurrent trip that doesn't depend on the CPU.

The power stage works. I've driven it from a function generator and from the test firmware in test-firmware/.

Digital-Synchronous-Buck-Converter, from the project README
From the project README

Main components on the Digital-Synchronous-Buck-Converter

BSC066N06NSATMA1INA241A3IDDFR

Digital-Synchronous-Buck-Converter bill of materials (BOM)

41 components, 26 distinct parts — part numbers from the project's BOM.

QtyPartRefs
2
BSC066N06NSATMA1
U1, U2
1
INA241A3IDDFR
U3
1
47NF
47nF
CB1
3
1uF
C_DT_1U1, C_OC_1U1, C_UCC_VDD_HF1
2
10nF
C_DT_10N1, C_OC_10N1
4
100pF
C_DT_100P1, C_INA_FILT2, C_INA_FILT3, C_OC_100P1
1
1nF
C_INA_FILT1
2
100nF
C_INA_VCC1, C_UCC_VDD_LF1
2
10uF
C_IN_HF1, C_OUT_HF1
2
47uF
C_IN_LF1, C_OUT_LF1
1
1nF
C_VFB_FILT1
2
Conn_01x02
J_IN1, J_OUT1
1
Conn_01x13
J_STM1
2
10R
R_FILT_N1, R_FILT_P1
2
10R
R_GATE_1, R_GATE_2
2
75KR
R_HYS1, R_HYS2
1
5mR
R_SHUNT1
2
TLV3603DCKR-ET
U_DT1, U_OC1
1
UCC27211D
U_UCC1
1
3.3V
D1
Show 6 more
QtyPartRefs
1
6.8UH
6.8uH
L1
1
0R
R1
1
3.9KR
R1_DT1
1
6.8KR
R1_VFB1
1
1KR
R2_DT1
1
10KR
R2_VFB1

Digital-Synchronous-Buck-Converter design files

The KiCad project lives in the BenjaminMeyerEE/Digital-Synchronous-Buck-Converter repository on GitHub; these links point at the commit this page was built from.

Digital-Synchronous-Buck-Converter: common questions

How big is the Digital-Synchronous-Buck-Converter PCB?

The Digital-Synchronous-Buck-Converter measures 52.8 × 49.6 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Digital-Synchronous-Buck-Converter?

41 components, from 26 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Digital-Synchronous-Buck-Converter design files?

From the BenjaminMeyerEE/Digital-Synchronous-Buck-Converter repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Digital-Synchronous-Buck-Converter design in my own project?

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

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