PoE IP Camera Reference Design
An illustrative PoE IP camera reference design for the terminal layer (campus terminals) of the five-layer network architecture: a 10/100 port (PoE RJ45 with integrated magnetics + 10/100 PHY), 802.3af power with a PD flyback producing 12V and an optional DC 12V backup input; Micro SD local storage, IR illumination and an RS-485 PTZ interface, with the network port and bus selected for outdoor wide-temperature use. Each position is marked with the VOOHU parts available, recommended part numbers and package pinouts.
Illustrative PCB ⇄ Schematic
Illustrative top-side view arranged by functional zone (not the actual layout). Red numbered dots mark positions VOOHU can supply. Click a component on the board, an entry in the index below or a part in the schematic to see recommended parts and package pinouts on the right.
Illustrative port topology: the SoC's RMII connects to the 10/100 PHY JL1101BR (U2); the PHY's MDI pairs pass ESD D1 directly into the PoE RJ45 with integrated magnetics (J1), with the isolation transformer and common-mode choke inside the connector; the cable-side center taps brought out of the connector go to rectifier bridge DB1 for PoE power (see the "PoE PD input" tab), and the PHY-side center taps go to ground through 0.1µF. 10/100 uses only the TX / RX pairs and only 1 pair is drawn; series resistors, decoupling, the PHY crystal and the like are not drawn.
Board bill of materials
Summarized by position; click any row to locate it on the board above.
| No. | Zone | Position | Ref. | VOOHU category | Recommended part | Availability |
|---|---|---|---|---|---|---|
| 01 | A Ethernet port / PHY | PoE RJ45 with integrated magnetics 1×1 (10/100) | J1 | RJ45 with Integrated Magnetics | SYT111B127DB1A1DP | VOOHU |
| 02 | A Ethernet port / PHY | Ethernet ESD array | D1 | TVS ESD | WHALD03G4U | VOOHU |
| 03 | A Ethernet port / PHY | 10/100 PHY | U2 | Ethernet PHY | JL1101BR-NI | VOOHU |
| 04 | A Ethernet port / PHY | PHY 25MHz crystal | Y1 | — | — | Non-VOOHU |
| 05 | B SoC / storage | Video ISP SoC | U1 | — | — | Non-VOOHU |
| 06 | B SoC / storage | DDR + SPI Flash | U5 U6 | — | — | Non-VOOHU |
| 07 | B SoC / storage | Micro SD card socket | J2 | SD Card Sockets | WHMC185-T1250-30 | VOOHU |
| 08 | C Image / IR illumination | Image sensor connector | J3 | — | — | Non-VOOHU |
| 09 | C Image / IR illumination | IR illuminator constant-current driver | U3 | — | — | Non-VOOHU |
| 10 | C Image / IR illumination | IR illuminator driver energy-storage inductor | L2 | Molded Inductors | WHYT0630 Series | VOOHU |
| 11 | C Image / IR illumination | IR LED board connector | J4 | — | — | Non-VOOHU |
| 12 | D RS-485 pan-tilt (PTZ) | RS-485 / alarm terminal block | J5 | — | — | Non-VOOHU |
| 13 | D RS-485 pan-tilt (PTZ) | Bus GDT (stage 1) | GDT1 | GDT | WHGT090V1P0A | VOOHU |
| 14 | D RS-485 pan-tilt (PTZ) | Bus differential-line common-mode choke | L1 | Signal Line Common Mode Chokes | WHAC-4532A-601T0 | VOOHU |
| 15 | D RS-485 pan-tilt (PTZ) | Bus TVS (stage-2 clamp) | D2 | TVS ESD | WHALD30E2B | VOOHU |
| 16 | D RS-485 pan-tilt (PTZ) | RS-485 transceiver | U4 | — | — | Non-VOOHU |
| 17 | E PoE PD input / power | PoE rectifier bridge | DB1 | — | — | Non-VOOHU |
| 18 | E PoE PD input / power | PD input TVS | D3 | TVS ESD | WHTB058VA | VOOHU |
| 19 | E PoE PD input / power | PD controller + flyback | U7 | — | — | Non-VOOHU |
| 20 | E PoE PD input / power | PoE power transformer (PD flyback) | T1 | PoE Power Transformers | WH13P-12L2 | VOOHU |
| 21 | E PoE PD input / power | 12V DC jack (backup) | J6 | — | — | Non-VOOHU |
| 22 | E PoE PD input / power | Buck converters ×2 (12V→3.3V / core) | U8 U9 | — | — | Non-VOOHU |
| 23 | E PoE PD input / power | Molded inductors ×2 (DC-DC) | L3 L4 | Molded Inductors | WHYTA0420 series | VOOHU |
Resources & downloads
Board bill of materials
Reference designators, zones, VOOHU categories, recommended parts and availability for all 23 positions. Opens directly in Excel.
Datasheet collection
Datasheet PDFs for the VOOHU parts recommended on this board.
Design files & footprint library
Schematic, PCB, and VOOHU part footprints and 3D models.
Coming soonRequest the PoE IP camera reference design full package
Includes the full-board position list, datasheets for the recommended VOOHU parts and position-by-position selection notes. For selection advice tailored to your port speed, PoE class (af / at), outdoor protection or storage interface, describe it in the requirements field. We reply within 24 hours on business days.
