6-Phase Boost Converter Design

Input 48–58V, output 72V nominal, 3.6kW, efficiency target 96%, enable via 3.3V logic.
Your goal: 6-phase interleaved boost, 48–58 V in to ~72 V out, 3.6 kW, 300–500 kHz, 96% target, 3.3 V enable. I’ve prepared a plan:
  1. Freeze specs: per-phase f_sw, ripple targets, UVLO/OVP/OCP/OTP, 3.3 V enable and soft-start.
  2. Choose architecture/control: 6-phase interleaved, current-share, per-phase sensing, fault latch.
  3. Size power stage: inductors (≤60% of Imax, ≤90% of Isat; ripple 20–40%), FETs/rectifiers, drivers, snubbers, IO caps, EMI filter.
  4. Capture schematic and select parts; implement enable/protections; generate BOM.
  5. Simulate (transient/efficiency/thermal), then PCB layout and reviews.
Click Start to run this plan, or tell me what you’d like to change.
add short circuit protection
please explain what U1 does.

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please explain what D1 does.

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this is a schematic of a 1S BMS, how hard would it be, to make it 4S capable ins...

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what is the current through R5

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please explain what REMOTE does.

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New Comment

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add an audio amplifier

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please explain what U1 does.

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what does this circuit do

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list all U1 pins in a table format. For each pin provide its pin number, pin nam...

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please explain what VCC, R5, U2 do.

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please explain what U2 does.

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please explain what U2 does.

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why R5 is 220?

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123

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please explain what R6, R12, R26, R30, R25, R8, R29, R22, R24 do.

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list all ICs and the decoupling capacitors attached to each. Ensure to include a...

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please explain what R1 does.

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can I change this with ATTINY441

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are there any issues in this project?

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create a detailed step by step plan table for this project to verify its functio...

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please explain what Y1 does.

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explain this project.

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please explain what U1 does.

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create a detailed step by step plan table for this project to verify its functio...

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explain this project.

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please explain what U1 does.

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please explain what J2 does.

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please explain what F1 does.

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can you cannect 2nd pin of attiny841-ssu to R5

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New Comment

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C4
Capacitance
22pF
C1
Capacitance
100nF
C5
Capacitance
22pF
C2
Capacitance
1uF
F1
VCC
MISO
VREF
VCC
VCC
TXD0
RXD0
RESET
VCC
DUMP_LOAD_ENABLE
ENABLE
SCK
VCC
MISO
VREF
MOSI
RESET
VCC
SCK
VREF
MISO
MOSI
ENABLE
ENABLE
RXD0
VREF
SCK
MOSI
DUMP_LOAD_ENABLE
TXD0
VCC
RESET
R6
Resistance
3.3 Ω
R18
Resistance
2.2KΩ
LED4
POWER
R21
Resistance
10KΩ
LED3
R3
Resistance
6.8KΩ
R2
Resistance
1KΩ
R14
Resistance
510 Ω
R1
Resistance
500 Ω
R12
Resistance
3.3 Ω
TX
J2
R26
Resistance
3.3 Ω
R16
Resistance
2.2KΩ
REMOTE
RX
D2
R4
Resistance
2.7KΩ
R30
Resistance
3.3 Ω
R25
Resistance
3.3 Ω
EXTTEMP1
R5
Resistance
220 Ω
R8
Resistance
3.3 Ω
R29
Resistance
3.3 Ω
R22
Resistance
3.3 Ω
R24
Resistance
3.3 Ω
R20
Resistance
10KΩ
R15
Resistance
10KΩ
R17
Resistance
2.2KΩ
R19
Resistance
10KΩ
H1
D1
End of Life
R23
Resistance
10KΩ
Y1
U2
H3
Q1
H2
U1
Manufacturer Part Number
ATTINY841-SSU


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BMS

BMS thumbnail
DIY BMS using ATTINY841-SSU this hardware has a higher balance current, fuse and TVS diode to help with voltage spikes. Most importantly, an external crystal to the micro controller (attiny841) which means the device is more reliable in low voltage situations

Properties

Properties describe core aspects of the project.

Pricing & Availability

Distributor

Qty 1

Arrow

$2.13–$3.39

Digi-Key

$1.81–$4.28

LCSC

$3.74–$4.49

Mouser

$3.95–$4.32

Verical

$1.88–$3.32

Controls