2 layers
2 layers157.3 × 86 mm
flyback converter with 4 outputs, each 25V
- Size
- 157.3 × 86 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 48
- Nets
- 36
- Pads
- 120
- Tracks, vias
- 227, 0
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 15 Jan 2019
- Updated
- 15 Jan 2019
Overview
Flyback is an open-source printed circuit board by src94, from the src94/multiple-output-power-supply repository on GitHub. It is a 2-layer board of 157.3 × 86 mm with 48 parts on 36 nets, routed with 227 tracks and 0 vias.
It is built around the UC3842N, UF4007 and IRF740. Its parts include 14 resistors, 11 capacitors, 11 diodes, 5 connectors and 2 ICs.
Main components
3
UC3842N
DIP-80℃~+70℃ 10V~30V 1A 1W 52kHz 97% Isolation PWM Modulation Primary-side feedback Under Voltage Protection、Over Current Protection、Soft-start、Under-voltage lockout DIP-8 AC-DC Controllers and Regulators ROHSHGSEMIAC-DC Controllers And Regulators
UF4007
DO-41-50℃~+150℃ 1.7V@1A 1A 1kV 30A 5uA@1kV 75ns DO-41 Fast Recovery / High Efficiency Diodes ROHSMDDFast Recovery / High Efficiency Diodes
IRF740
TO-220-55℃~+175℃ 1 N-channel 1.162nF 100W 10A 17pF 32nC@10V 400V 4V 500mΩ@10V N-Channel TO-220 MOSFETs ROHSMinosMOSFETs
Parts
48| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 2200U | Capacitors_THT:CP_Radial_D14.0mm_P5.00mm | C8, C9, C10, C11 |
| 4 | OUT | Connectors_Terminal_Blocks:TerminalBlock_bornier-2_P5.08mm | J2, J3, J4, J5 |
| 3 | 1K | Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R11, R12, R13 |
| 3 | 1N5480 | Diodes_THT:D_A-405_P12.70mm_Horizontal | D9, D10, D11 |
| 2 | 10K | Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R2, R8 |
| 2 | UF4007 | Diodes_THT:D_A-405_P10.16mm_Horizontal | D4, D5 |
| 1 | 0.1U | Capacitors_THT:C_Disc_D3.8mm_W2.6mm_P2.50mm | C3 |
| 1 | 0.55 | Resistors_THT:R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R9 |
| 1 | 10 | Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P15.24mm_Horizontal | R6 |
| 1 | 1000pF | Capacitors_THT:C_Disc_D3.8mm_W2.6mm_P2.50mm | C1 |
| 1 | 100K | Resistors_THT:R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R3 |
| 1 | 100pF | Capacitors_THT:C_Disc_D3.8mm_W2.6mm_P2.50mm | C6 |
| 1 | 10K | Potentiometers:Potentiometer_Trimmer_Bourns_3296W | RV1 |
| 1 | 10V | Diodes_THT:D_A-405_P10.16mm_Horizontal | D8 |
| 1 | 10nF | Capacitors_THT:C_Disc_D3.8mm_W2.6mm_P2.50mm | C7 |
| 1 | 120U | Capacitors_THT:CP_Radial_D10.0mm_P2.50mm | C5 |
| 1 | 15K | Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1 |
| 1 | 180U | Capacitors_THT:CP_Radial_D14.0mm_P7.50mm | C4 |
| 1 | 1N5408 | Diodes_THT:D_A-405_P12.70mm_Horizontal | D6 |
| 1 | 1U | Capacitors_THT:C_Disc_D3.8mm_W2.6mm_P2.50mm | C2 |
| 1 | 20V | Diodes_THT:D_A-405_P10.16mm_Horizontal | D3 |
| 1 | 22 | Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P15.24mm_Horizontal | R7 |
| 1 | 24V | Diodes_THT:D_A-405_P10.16mm_Horizontal | D2 |
| 1 | 3.3K | Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R4 |
| 1 | 4N25 | Housings_DIP:DIP-6_W7.62mm | U2 |
| 1 | 50K | Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R5 |
| 1 | 5K | Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R10 |
| 1 | 86K | Resistors_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R14 |
| 1 | AC_IN | Connectors_Terminal_Blocks:TerminalBlock_bornier-2_P5.08mm | J1 |
| 1 | BRIDGE | Diodes_THT:Diode_Bridge_18.5x5.5 | D1 |
| 1 | ETD29 | Transformers_SMPS_ThroughHole:ETD29_13Pin_Horizontal_EPCOS-B66359A1013T | TR1 |
| 1 | IRF740 | TO_SOT_Packages_THT:TO-220-3_Vertical | Q1 |
| 1 | TL431LP | TO_SOT_Packages_THT:TO-92_Inline_Narrow_Oval | D7 |
| 1 | UC3842 | Housings_DIP:DIP-8_W7.62mm_LongPads | U1 |
The 46 most common of 48 parts.
Questions
How big is the Flyback PCB?
It measures 157.3 × 86 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Flyback use?
48 parts, built around the UC3842N, UF4007 and IRF740. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Flyback KiCad files?
From the src94/multiple-output-power-supply repository on GitHub, at the commit this page was made from: the board is Flyback.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Flyback design in my own project?
Its repository states no licence, so its author keeps all rights: ask src94 before reusing the design.
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