Synchronous Flyback Converter - Evaluation Board
About the Synchronous Flyback Converter - Evaluation Board
Synchronous Flyback Converter - Evaluation Board is an open source PCB design by crawford, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 88.9 × 46.4 mm, with 92 components from 60 distinct parts.
Other key parts include the TPS23754PWPR and TCMT1107. By type, the board carries 29 capacitors, 25 resistors, 12 test points, 9 diodes, 4 inductors and 3 transistors.
It belongs with the dev boards & breakouts designs in this gallery.
From the project
A base platform for PoE peripherals
Populate: 1. FB1-FB2 2. R2-R3, R5-R14, R19-R21, R23-R25 3. RV1-RV4 4. L1-L2 5. C1-C12, C15-C17, C22, C24, C26-C28 6. D1-D2, D6 7. Q1-Q3A 8. U2 9. T1-T2
Tune: 1. Set RV1 to 22.1 kΩ. 2. Set RV2 to 69.8 kΩ. 3. Set RV3 to 69.8 kΩ. 4. Set RV4 to 115 kΩ.
Test: 1. Insufficient supply a. Apply 5-volt supply across VDDA (TP10) and VSSA (TP11). b. Measure voltage across R7 and verify that it is 0 V.
Main components on the Synchronous Flyback Converter - Evaluation Board
Synchronous Flyback Converter - Evaluation Board bill of materials (BOM)
92 components, 60 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | TPS23754PWPR | TSSOP-20 | U1 |
| 1 | TCMT1107 | SOP-4_4.4x2.6mm_P1.27mm | U2 |
| 1 | SiR422DP | PowerPAK_SO-8_Single | Q1 |
| 1 | Si7898DP | PowerPAK_SO-8_Single | Q2 |
| 1 | MMDT3906 | SOT-363_SC-70-6 | Q3 |
| 1 | RJ45_LED_Shielded | RJHSE-538X | J1 |
| 4 | 0-200k | TRIM_3306F-1-204 | RV1, RV2, RV3, RV4 |
| 1 | PoE_Transformer | WE-PoE+ | T1 |
| 1 | Pulse_Transformer | WE-GDTI | T2 |
| 1 | VC | TestPoint_Loop_D1.80mm_Drill1.0mm_Beaded | TP2 |
| 5 | VB | TestPoint_Loop_D1.80mm_Drill1.0mm_Beaded | TP7, TP9, TP15, TP16, TP17 |
| 1 | 12V | TestPoint_Loop_D1.80mm_Drill1.0mm_Beaded | TP8 |
| 1 | VDDA1 | TestPoint_Loop_D1.80mm_Drill1.0mm_Beaded | TP10 |
| 1 | VSSA1 | TestPoint_Loop_D1.80mm_Drill1.0mm_Beaded | TP11 |
| 2 | GND | TestPoint_Loop_D1.80mm_Drill1.0mm_Beaded | TP12, TP13 |
| 1 | EARTH | TestPoint_Loop_D1.80mm_Drill1.0mm_Beaded | TP14 |
| 1 | PT61017PEL | PT61017PEL | TR1 |
| 1 | D | D_SMB | D1 |
| 2 | D | D_SOD-323 | D2, D7 |
| 1 | D_Zener | D_SMA | D3 |
Show 40 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | D_Bridge_+-AA | Diode_Bridge_Diotec_ABS | D4, D5 |
| 1 | TL431DBZ | SOT-23 | D6 |
| 2 | BAV99 | SOT-23 | D8, D9 |
| 2 | Ferrite_Bead_Small | R_1206_3216Metric | FB1, FB2 |
| 1 | 3u3 | L_Abracon_ASPI-0630LR | L1 |
| 1 | 0u33 | L_Abracon_ASPI-0630LR | L2 |
| 3 | 0u1 | C_0402_1005Metric | C1, C5, C14 |
| 1 | 47u | C_Elec_8x10.2 | C2 |
| 2 | 1u | C_0805_2012Metric | C3, C4 |
| 1 | 150u | C_Elec_6.3x7.7 | C6 |
| 2 | 330u | C_Elec_8x10.2 | C7, C8 |
| 4 | 1u | C_0402_1005Metric | C9, C11, C16, C27 |
| 1 | 1n2 | C_0402_1005Metric | C10 |
| 1 | 22u | C_Elec_5x5.4 | C12 |
| 3 | 1n | C_0402_1005Metric | C13, C25, C29 |
| 1 | 2n2 | C_Disc_D10.0mm_W2.5mm_P5.00mm | C15 |
| 2 | 0u47 | C_0402_1005Metric | C17, C22 |
| 4 | 0u01 | C_0402_1005Metric | C18, C19, C20, C21 |
| 1 | 330p | C_0402_1005Metric | C23 |
| 1 | 3n3 | C_0402_1005Metric | C24 |
| 1 | 27n | C_0402_1005Metric | C26 |
| 1 | 6n8 | C_0402_1005Metric | C28 |
| 2 | 1k2 | R_0402_1005Metric | R1, R4 |
| 1 | 39K | R_0805_2012Metric | R2 |
| 2 | 10 | R_0805_2012Metric | R3, R6 |
| 1 | 39k7 | R_0402_1005Metric | R5 |
| 2 | 10m | R_0402_1005Metric | R7, R8 |
| 1 | 62k | R_0402_1005Metric | R9 |
| 1 | 4R7 | R_0402_1005Metric | R10 |
| 1 | 63R4 | R_0402_1005Metric | R11 |
| 1 | 0R18 | R_0805_2012Metric | R12 |
| 1 | 2k | R_0402_1005Metric | R13 |
| 2 | 10k | R_0402_1005Metric | R14, R25 |
| 4 | 75 | R_0402_1005Metric | R15, R16, R17, R18 |
| 1 | 2k2 | R_0402_1005Metric | R19 |
| 1 | 6k04 | R_0402_1005Metric | R20 |
| 1 | 13k3 | R_0402_1005Metric | R21 |
| 1 | 121k | R_0402_1005Metric | R22 |
| 1 | 0 | R_0402_1005Metric | R23 |
| 1 | 1k5 | R_0402_1005Metric | R24 |
Synchronous Flyback Converter - Evaluation Board design files
The KiCad project lives in the crawford/PoE repository on GitHub; these links point at the commit this page was built from.
Synchronous Flyback Converter - Evaluation Board: common questions
How big is the Synchronous Flyback Converter - Evaluation Board?
The Synchronous Flyback Converter - Evaluation Board measures 88.9 × 46.4 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Synchronous Flyback Converter - Evaluation Board?
92 components, from 60 distinct parts. The full bill of materials is listed on this page.
Where can I download the Synchronous Flyback Converter - Evaluation Board design files?
From the crawford/PoE repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Synchronous Flyback Converter - Evaluation Board design in my own project?
Yes, under the terms of its GPL-3.0 license, which crawford chose for the repository.
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