Skyworks LinkCom PC07 001R-A Series User manual

REFERENCE MANUAL
Skyworks Solutions, Inc. • Phone [949] 231-3000 • [email protected] • www.skyworksinc.com
206567A • Skyworks Proprietary Information • Products and Product Information are Subject to Change without Notice
May 10, 2023
1
LinkCom PC07xx-001R-A Transformer Second Source
for Si3406-ISO-FB-EVB
Key Features
• IEEE 802.3at compliant
• Very small application PCB surface
• High efficiency
• High integration
• Low-profile 4 x 4 mm 20-pin QFN
• Integrated diode bridge
• Integrated thermal shutdown protection
•LowBOMCost
• Automatic and user mode MPS generation
• Integrated transient overvoltage protection
Description
The Si3406 isolated Flyback evaluation board is a 
reference design for a power supply in a Power over
Ethernet (PoE) Powered Device (PD) application.
This documents provides information about second
source transformers that can be utilized in the existing
Si3406 Isolated Flyback design. The necessary 
modifications in order to use the LinkCom 
PC07xx-001R-A transformers series on the official EVBs
are listed in Table 1.
This Si3406-Flyback EVB provides a simple and low-
cost solution with different output voltages and power 
levels.
The Si3406-ISO-FB-EVB board is shown below. The
Si3406 IC integrates an IEEE 802.3at compatible PoE
interface as well as a current control-based dc/dc 
converter.
The Si3406 PD integrates an Internal rectifier bridge, detection circuit, classification circuit, dc/dc switch, hotswap
switch, TVS overvoltage protection, dynamic soft-start circuit, cycle-by-cycle current limit, thermal shutdown,
optional synchronous secondary rectification driver, automatic and user mode MPS generation, and inrush 
current protection.
The switching frequency is set to 177 kHz, 150 kHz and 123 kHz for 3.3 V, 5 V, and 12 V, respectively, by installing
R18 with 110 kΩ, 130 kΩ, and 160 kΩfor the respective voltage levels.

LinkCom PC07xx-001R-A Transformer Second Source for Si3406-ISO-FB-EVB
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Parameter Condition Specifications
Ordering Part Number — Si3406FB3V2KIT Si3406FB3V2KIT Si3406FB3V2KIT
PSE input voltage range Connector J1 37 V to 57 V
PoE Type/Class IEEE 802.3at Type 1/Class 2
Output Voltage / Current Connectors J2-J3 3.3 V /1.5 A 5 V / 1.05 A 12 V / 0.45 A
Efficiency, End-to-End, WE750319xxx VIN = 50 V, internal bridge 77.8 % 80.3 % 83.1%
Efficiency, End-to-End, PC07xx-001R-A VIN = 50 V, internal bridge 78.2 % 80.7 % 83.5 %
Switching frequency RFREQ (R18) 177 kHz (110 kΩ) 150 kHz (130 kΩ)123kHz(160kΩ)
Conducted EMI EN55032, average detector Passed
Conducted EMI EN55032, peak detector Passed
Radiated EMI EN55032 Class B Passed

LinkCom PC07xx-001R-A Transformer Second Source for Si3406-ISO-FB-EVB
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3May 10, 2023
1. Selector Guide
The output voltage of this isolated flyback evaluation board depends mainly on the turns ratio of the flyback
transformer. With the proper transformer, it is possible to generate any kind of output voltage.
This user guide presents three different output voltages: 3.3 V, 5 V, and 12 V.
The maximum input power allowed by the standard is 6.49 W, but the EVB can handle up to 7 W output power,
which is limited by the internal rectifier bridge, while the efficiency of the EVB is highly dependent on the output
voltage. Higher output voltage configurations tend to have higher efficiencies while lower output voltages result
in lower efficiencies.
Figure 1. Si3406-Flyback Isolated EVB End-to-End Efficiency of Different Configurations (50 V Input)
Table 1. Component Selection for the LinkCom PC07xx-001R-A Transformer Series
Board Name T1 XFMR C2 R4
Si3406-ISO-FB-3.3V-7W PC0703-001R-A 2.2 nF 5.6 
Si3406-ISO-FB-5V-7W PC0705-001R-A 3.3 nF 4.3 
Si3406-ISO-FB-12V-7W PC0712-001R-A 680 pF 24 
Note: The chart shows the end-to-end EVB efficiency, where voltage drop on the diode bridge is included while indicator
LEDs are removed as they are not part of the power conversion.

LinkCom PC07xx-001R-A Transformer Second Source for Si3406-ISO-FB-EVB
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4May 10, 2023
2. Si3406-ISO-FB EVB: 3.3 V (Class 2 Configuration)
2.1. Si3406-ISO-FB EVB Schematic (3.3 V, Class 2, 7 W)
Figure 2 shows the schematic of the Si3406-ISO-FB 3.3 V, Class 2 EVB. The parts in red on the schematic represent
the BOM differences compared to the official EVB. The parts in gray are not installed on the EVB, but they have
footprints.
Figure 2. Si3406-ISO-FB Isolated EVB Schematic: 3.3 V, Class 2 PD, 7 W

LinkCom PC07xx-001R-A Transformer Second Source for Si3406-ISO-FB-EVB
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206567A • Skyworks Proprietary Information • Products and Product Information are Subject to Change without Notice
5May 10, 2023
2.2. End-to-End EVB Efficiency
The end-to-end conversion efficiency measurement data of the Si3406 3.3 V ISO-FB board are shown in Figure 3
with the original and the second source transformers and with internal input bridges. Efficiency was measured
from the PoE (RJ45 connector) input to the 3.3 V output at three different input voltage levels: 40.8 V, 50 V, and
57 V.
Figure 3. Si3406-ISO-FB End-to-End Efficiency Chart with Internal Input Bridge Diodes
(40.8 V, 50 V, and 57 V Input, 3.3 V Output, Class 2)
Note: The chart shows end-to-end EVB efficiency. The voltage drop of the diode bridge is included. Indicator LEDs are
removed as they are not part of the power conversion.

LinkCom PC07xx-001R-A Transformer Second Source for Si3406-ISO-FB-EVB
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6May 10, 2023
2.3. Thermal Measurements
The Si3406-ISO-FB EVB’s temperature was measured at a maximum input power of 6.5 W. The Si3406-ISO-FB EVB
is configured for 3.3 V output voltage and Class 2 power level. Figure 4 shows the thermal images taken of the EVB
board at maximum input power.
Figure 4. Thermal Measurements of the Si3406-ISO-FB Isolated EVB (3.3 V, Class 2 PD)
Table 2 lists the temperatures of notable components across the board.
Table 2. Component Temperatures at Full Load
Component Temperature1
1. The ambient temperature was 26 °C during the thermal measurements.
Si3406 - U3 60.9 °C
Flyback Transformer, T1 42.0 °C
Secondary Side Diode, D1 50.9 °C
RC snubber, R4 to C2 47.2 °C
Primary Side Zener-Diode Clamp, D4 to D5 44.2 °C

LinkCom PC07xx-001R-A Transformer Second Source for Si3406-ISO-FB-EVB
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7May 10, 2023
2.4. Discontinuous (DCM) and Continuous (CCM) Conduction Modes
At low load, the converter works in discontinuous conduction mode (DCM). At heavy load, the converter runs in
continuous conduction mode (CCM). At low load, the SWO voltage waveform has a ringing waveform, which is
typical for DCM operation.
Figure 5. Si3406-ISO-FB EVB, 3.3 V, Class 2: SWO Waveform in Discontinuous Conduction Mode (DCM) at Low Load (Left),
and in Continuous Conduction Mode (CCM) at Heavy Load (Right)
Similar voltage waveforms can be observed on the secondary side diode, D1. The voltage amplitudes on the 
secondary side diode, D1, are much lower due to the transformer turns ratio; however, the discontinuous and 
continuous conduction mode characteristics are still present.
Figure 6. Si3406-ISO-FB EVB, 3.3 V, Class 2: Secondary Side Diode Voltage Waveform in Discontinuous Conduction Mode
(DCM) at Low Load (Left), and in Continuous Conduction Mode (CCM) at Heavy Load (Right)

LinkCom PC07xx-001R-A Transformer Second Source for Si3406-ISO-FB-EVB
Skyworks Solutions, Inc. • Phone [949] 231-3000 • sale[email protected] • www.skyworksinc.com
206567A • Skyworks Proprietary Information • Products and Product Information are Subject to Change without Notice
8May 10, 2023
2.5. Radiated Emissions Measurement Results
Radiated emissions of the Si3406-ISO-FB, 3.3 V, Class 2 EVB board have been measured with 50 V input voltage
and a full load connected to the output. In this case, the input power was 6.5 W.
As shown in Figure 7, the Si3406-ISO-FB, 3.3 V, Class 2 EVB is fully compliant with the international EN 55032 
Class B emissions standard.
Figure 7. Si3406-ISO-FB EVB Radiated Emissions Measurements Results (50 V Input, 3.3 V Output, 6.5 W Input Power)
The EVB is measured at full load with peak detection in both vertical and horizontal polarizations. This is a 
relatively fast process that produces a red curve (vertical polarization) and a blue curve (horizontal polarization).
The chamber was non-reflective, and multiple measurements were made by rotating the table in 45 degree steps.
All these measurement results are displayed in the graph above.
Next, specific frequencies are selected for quasi-peak measurements if the peak detection shows significant 
violations. The board is measured again at those specific frequencies with a quasi-peak detector, which is a very
slow but accurate measurement. The results of this quasi-peak detector measurement are the blue rhombuses 
(if any). These frequencies and the corresponding results are displayed in the table above if quasi-peak 
measurements are executed.
The red and blue curves and the blue rhombuses (if any) represent the final result of the measurement process. 
To have passing results, the blue rhombuses should be below the highlighted EN 55032 Class B limit.

LinkCom PC07xx-001R-A Transformer Second Source for Si3406-ISO-FB-EVB
Skyworks Solutions, Inc. • Phone [949] 231-3000 • sale[email protected] • www.skyworksinc.com
206567A • Skyworks Proprietary Information • Products and Product Information are Subject to Change without Notice
9May 10, 2023
2.6. Conducted Emissions Measurement Results
The Si3406-ISO-FB, 3.3 V, Class 2 EVB board's conducted emissions have been measured by two different 
measurement methods to comply with the international EN 55032 standard. The EVB is supplied and measured
on its PoE input port as shown in Figure 8.
Figure 8. Conducted EMI Measurement Setup
The detector in the spectrum analyzer is set to:
•Peakdetectorand
•Averagedetector
Both results are shown in Figure 9:
Figure 9. Si3406-ISO-FB EVB Conducted Emissions Measurements Results (50 V Input, 3.3 V Output, 6.5 W Input Power)

LinkCom PC07xx-001R-A Transformer Second Source for Si3406-ISO-FB-EVB
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206567A • Skyworks Proprietary Information • Products and Product Information are Subject to Change without Notice
10 May 10, 2023
2.7. Bill of Materials
Table 3 lists the bill of materials for the standard 3.3 V output evaluation board with the necessary modifications
highlighted for the LinkCom PC0703-001R-A with option PoE Class 2.
Table 3. Si3406 Isolated Flyback 3.3 V Bill of Materials with the LinkCom PC0703-001R-A
Qty Ref Value Rating Voltage Tol Type PCB
Footprint Mfr PN Mfr
1 C1 0.01 µF 100 V ±10% X7R C0805 C0805X7R101-103K Venkel
1 C10 0.22 µF 16 V ±10% X7R C0805 C0805X7R160-224KNE Venkel
1 C12 0.1 µF 100 V ±10% X7R C0805 C0805X7R101-104K Venkel
1 C13 0.1 µF 16 V ±10% X7R C0805 C0805X7R160-104K Venkel
1 C14 4.7 nF 25 V ±2% C0G C0805 C0805C0G250-472G Venkel
1 C15 15 nF 50 V ±5% C0G C0805 C0805C0G500-153J Venkel
1 C16 1000 pF 2000 V ±5% C0G C1808 C1808C0G202-102JNE Venkel
1 C17 4700 pF 2000 V ±10% X7R C1808 C1808X7R202-472KNE Venkel
1 C18 1 µF 6.3 V ±10% X5R C0603 C0603X5R6R3-105K Venkel
1 C19 0.01 µF 100 V ±10% X7R C0603 C0603X7R101-103K Venkel
1 C2 2.2 nF 50 V ±10% C0G C0805 C0805C0G500-222K Venkel
1 C3 100 µF 6.3 V ±10% X5R C1210 C1210X5R6R3-107K Venkel
1 C4 560 µF 10 V ±20% Alum_Elec C3.5X8MM-RAD 860020274012 Wurth
Elektronik
1 C6 22 nF 25 V ±5% C0G C0805 C0805C0G250-223J Venkel
1 C8 12 µF 100 V ±20% Alum_Elec C2.5X6.3MM-RAD EEUFC2A120 Panasonic
1 C9 1 µF 100 V ±10% X7R C1210 C1210X7R101-105K Venkel
1 D1 SDT10A45P5 10 A 45 V Schottky POWERDI-5 SDT10A45P5-7 Diodes Inc.
1 D2 RS1B 1.0 A 100 V Single DO-214AC RS1B Fairchild
1 D3 Green LED-0805-K-K1A2 XZVG54W-8 SunLED
1 D5 DFLT40A-7 3.49 A 40 V Zener POWERDI-123 DFLT40A-7 Diodes Inc.
8
D7, D8, D9,
D10, D11,
D12, D13,
D14
S1B 1.0 A 100 V Single DO-214AC S1B Fairchild
4FB1, FB2,
FB3, FB4 1500 1000 mA SMT L0805 742792097 Wurth
2 J1, J2 BND_POST 15 A Banana Banana-jack 101 Abbatron HH
Smith
2 JP1, JP2 HEADER 1X2 Header CONN1X2 TSW-102-07-T-S Samtec
1LB1
LABEL-Si3406-EVB-
ISO-FB-R4.2-3.3V
Polyimide,
White PTL-14-717 LABEL-Si3406-EVB-ISO-FB- R4.2-3.3V Skyworks
4MH1, MH2,
MH3, MH4 4 to 40 Screw MH-125|MH-125NP NSS-4-4-01 Richco Plastic Co.
1PCB1
Si3406-EVB-ISO-FB
REV 4.0 Bare PCB N/A Si3406-EVB-ISO-FB REV 4.0 Skyworks
1 R10 5.1 k1/10 W ±1% ThickFilm R0805 CR0805-10W-5101F Venkel
1 R11 1.5 k1/8 W ±1% ThickFilm R0805 CR0805-8W-1501F Venkel
1 R12 36.5 k1/10 W ±1% ThickFilm R0805 CR0805-10W-3652F Venkel
1 R14 510 1/10 W ±1% ThickFilm R0805 CR0805-10W-5100F Venkel
3R15, R16,
R21 0 2 A ThickFilm R0805 CR0805-10W-000 Venkel

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11 May 10, 2023
1 R17 75 1/10 W ±1% ThickFilm R0805 CR0805-10W-75R0F Venkel
1 R18 110 k1/10 W ±1% ThickFilm R0805 CR0805-10W-1103F Venkel
1 R19 24.3 k1/8 W ±1% ThickFilm R0805 CRCW080524K3FKEA Vishay
1R2 82k1/10 W ±5% ThickFilm R0805 CR0805-10W-823J Venkel
1 R20 21.5 k1/10 W ±1% ThickFilm R0805 CR0805-10W-2152F Venkel
1 R22 160 1/4 W ±1% ThickFilm R1206 CR1206-4W-1600F Venkel
1R3 2001/8 W ±1% ThickFilm R0805 CR0805-8W-2000F Venkel
1R4 5.61/10 W ±5% ThickFilm R0805 CR0805-10W-5R6J Venkel
1R5 1.21/10 W ±5% ThickFilm R0805 CR0805-10W-1R2J Venkel
1R7 101/10 W ±1% ThickFilm R0805 CR0805-10W-10R0F Venkel
1R8 31/8 W ±1% ThickFilm R0805 CR0805-8W-3R00FT Venkel
4SO1, SO2,
SO3, SO4 Standoff Standoff 2397 SPC Technology
1 T1 PC0703-001R-A 3.3 V Flyback XFMR-EP10 PC0703-001R-A LinkCom
3TP1, TP12,
TP17 Red Loop TESTPOINT 5000 Keystone
6
TP8, TP9,
TP10, TP13,
TP14, TP15
Black Loop TESTPOINT 5001 Keystone
1 U2 RJ-45 Receptacle RJ45-74982104400 74982104400 Wurth
Elektronik
1 U3 Si3406 120 V PD QFN20N5X5P0.8 Si3406-A-GM Skyworks
1 U4 VO618A-3X017T SO4N10.16P2.54-AKEC VO618A-3X017T Vishay
1 U5 TLV431 Shunt TLV431-DBZ TLV431BCDBZR TI
Not Installed Components
1 C11 0.22 µF 16 V ±10% X7R C0805 C0805X7R160-224KNE Venkel
8
C20, C21,
C22, C23,
C24, C25,
C26, C27
1 nF 100 V ±10% X7R C0603 C0603X7R101-102K Venkel
4C28, C29,
C30, C31 1 nF 2000 V ±5% X7R C1206 C1206C102JGRACTU Kemet
1 C5 100 µF 6.3 V ±10% X5R C1210 C1210X5R6R3-107K Venkel
1 C7 1 µF 100 V ±10% X7R C1210 C1210X7R101-105K Venkel
2 D15, D16 SMAJ58CA 400 W 58 V TVS DO-214AC SMAJ58CA Littelfuse
1 L5 1 µH 2.4 A ±20% Shielded L0805 TFM201208ALD-1R0MTCA TDK
1 Q1 NVTFS6H888NLTAG 14 A 80 V N-CHNL POWER33 NVTFS6H888NLTAG ON Semi
1R1 1k1/10 W ±1% ThickFilm R0805 CR0805-10W-1001F Venkel
1 R13 0 2 A ThickFilm R0805 CR0805-10W-000 Venkel
1R6 101/10 W ±1% ThickFilm R0805 CR0805-10W-10R0F Venkel
1R9 24k1/10 W ±1% ThickFilm R0805 CR0805-10W-2402FT Venkel
1 T2 1200 µH None 1500 V None XFMR-PA0184NL PA0184NL Pulse
Engineering
7
TP2, TP3,
TP4, TP5,
TP6, TP11,
TP16
Black Loop Testpoint 5001 Keystone
Table 3. Si3406 Isolated Flyback 3.3 V Bill of Materials with the LinkCom PC0703-001R-A
Qty Ref Value Rating Voltage Tol Type PCB
Footprint Mfr PN Mfr

LinkCom PC07xx-001R-A Transformer Second Source for Si3406-ISO-FB-EVB
Skyworks Solutions, Inc. • Phone [949] 231-3000 • sale[email protected] • www.skyworksinc.com
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12 May 10, 2023
3. Si3406-ISO-FB EVB: 5 V, Class 2 Configuration
3.1. Si3406-ISO-FB EVB Schematic (5 V, Class 2, 7 W)
Figure 10 shows the schematic of the Si3406-ISO-FB 5 V, Class 2 EVB. The parts in red on the schematic represent
the BOM differences compared to the official EVB. The parts in gray are not installed on the EVB, but they have
footprints.
Figure 10. Si3406-ISO-FB Isolated EVB Schematic (5 V, Class 2 PD, 7 W)

LinkCom PC07xx-001R-A Transformer Second Source for Si3406-ISO-FB-EVB
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13 May 10, 2023
3.2. End-to-End EVB Efficiency
The end-to-end conversion efficiency measurement data of the Si3406 5 V ISO-FB board are shown in Figure 11
with the original and the second source transformers and with internal input bridges. Efficiency was measured
from PoE (RJ45 connector) input to the 5 V output at three different input voltage levels: 40.8 V, 50 V and 57 V.
Figure 11. Si3406-ISO-FB End-to-End Efficiency Chart with Internal Input Bridge Diodes
(40.8 V, 50 V and 57 V Input, 5 V Output, Class 2)
Note: The chart shows end-to-end EVB efficiency. The voltage drop of the diode bridge is included. Indicator LEDs are
removed as they are not part of the power conversion.

LinkCom PC07xx-001R-A Transformer Second Source for Si3406-ISO-FB-EVB
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14 May 10, 2023
3.3. Thermal Measurements
The Si3406-ISO-FB EVB’s temperature was measured at a maximum input power of 6.5 W. The Si3406-ISO-FB EVB
is configured for 5 V output voltage and Class 2 power level. Figure 12 shows the thermal images taken of the EVB
board at maximum input power.
Figure 12. Thermal Measurements of the Si3406-ISO-FB Isolated EVB, 5 V, Class 2 PD
Table 4 lists the temperatures of notable components across the board.
Table 4. Component Temperatures at Full Load
Component Temperature1
1. The ambient temperature was 26 °C during the thermal measurements.
Si3406, U3 60.4 °C
Flyback Transformer, T1 42.7 °C
Secondary Side Diode, D1 46.4 °C
RC snubber, R4 to C2 47.5 °C
Primary Side Zener-Diode Clamp, D4 to D5 45.4 °C

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3.4. Discontinuous (DCM) and Continuous (CCM) Conduction Modes
At low load, the converter works in discontinuous conduction mode (DCM). At heavy load, the converter runs in
continuous conduction mode (CCM). At low load, the SWO voltage waveform has a ringing waveform, which is
typical for DCM operation.
Figure 13. Si3406-ISO-FB EVB, 5 V, Class 2: SWO Waveform in Discontinuous Conduction Mode (DCM) at Low Load (Left),
and in Continuous Conduction Mode (CCM) at Heavy Load (Right)
Similar voltage waveforms can be observed on the secondary side diode, D1. The voltage amplitudes on the 
secondary side diode, D1, are much lower due to the transformer turns ratio; however, the discontinuous and 
continuous conduction mode characteristics are still present.
Figure 14. Si3406-ISO-FB EVB, 5 V, Class 2: Secondary Side Diode Voltage Waveform in Discontinuous Conduction Mode
(DCM) at Low Load (Left), and in Continuous Conduction Mode (CCM) at Heavy Load (Right)

LinkCom PC07xx-001R-A Transformer Second Source for Si3406-ISO-FB-EVB
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16 May 10, 2023
3.5. Radiated Emissions Measurement Results
Radiated emissions of the Si3406-ISO-FB, 5 V, Class 2 EVB board have been measured with 50 V input voltage and
a full load connected to the output. In this case, the input power was 6.5 W.
As shown in Figure 15, the Si3406-ISO-FB, 5 V, Class 2 EVB is fully compliant with the international EN 55032 
Class B emissions standard.
Figure 15. Si3406-ISO-FB EVB Radiated Emissions Measurements Results (50 V Input, 5 V Output, 6.5 W Input Power)
The EVB is measured at full load with peak detection in both vertical and horizontal polarizations. This is a 
relatively fast process that produces a red curve (vertical polarization) and a blue curve (horizontal polarization). 
The chamber was non-reflective and multiple measurements were made by rotating the table in 45 degree steps.
All these measurement results are displayed in Figure 15.
Next, specific frequencies are selected for quasi-peak measurements if the peak detection shows significant 
violations. The board is measured again at those specific frequencies with a quasi-peak detector, which is a very
slow but accurate measurement. The results of this quasi-peak detector measurement are the blue rhombuses 
(if any). These frequencies and the corresponding results are displayed in the table above if quasi-peak 
measurements are executed.
The red and blue curves and the blue rhombuses (if any) represent the final result of the measurement process. To
have passing results, the blue rhombuses should be below the highlighted EN 55032 Class B limit.

LinkCom PC07xx-001R-A Transformer Second Source for Si3406-ISO-FB-EVB
Skyworks Solutions, Inc. • Phone [949] 231-3000 • sale[email protected] • www.skyworksinc.com
206567A • Skyworks Proprietary Information • Products and Product Information are Subject to Change without Notice
17 May 10, 2023
3.6. Conducted Emissions Measurement Results
The Si3406-ISO-FB, 5 V, Class 2 EVB board's conducted emissions have been measured by two different 
measurement methods to comply with the international EN 55032 standard. The EVB is supplied and measured
on its PoE input port as shown in Figure 16.
Figure 16. Conducted EMI Measurement Setup
The detector in the spectrum analyzer is set to:
•Peakdetectorand
•Averagedetector
Both results are shown in Figure 17:
Figure 17. Si3406-ISO-FB EVB Conducted Emissions Measurements Results (50 V Input, 5 V Output, 6.5 W Input Power)

LinkCom PC07xx-001R-A Transformer Second Source for Si3406-ISO-FB-EVB
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206567A • Skyworks Proprietary Information • Products and Product Information are Subject to Change without Notice
18 May 10, 2023
3.7. Bill of Materials
Table 5 lists the bill of materials for the standard 5 V output evaluation board with the necessary modifications
highlighted for the LinkCom PC0705-001R-A with option PoE Class 2.
Table 5. Si3406 Isolated Flyback 5 V Bill of Materials with the LinkCom PC0705-001R-A
Qty Ref Value Rating Voltage Tol Type PCB
Footprint Mfr PN Mfr
1 C1 0.01 µF 100 V ±10% X7R C0805 C0805X7R101-103K Venkel
1 C10 0.22 µF 16 V ±10% X7R C0805 C0805X7R160-224KNE Venkel
1 C12 0.1 µF 100 V ±10% X7R C0805 C0805X7R101-104K Venkel
1 C13 0.1 µF 16 V ±10% X7R C0805 C0805X7R160-104K Venkel
1 C14 3.3 nF 50 V ±5% X7R C0805 C0805X7R500-332JNE Venkel
1 C15 10 nF 50 V ±1% C0G C0805 C0805C0G500-103F Venkel
1 C16 1000 pF 2000 V ±5% C0G C1808 C1808C0G202-102JNE Venkel
1 C17 4700 pF 2000 V ±10% X7R C1808 C1808X7R202-472KNE Venkel
1 C18 1 µF 6.3 V ±10% X5R C0603 C0603X5R6R3-105K Venkel
1 C19 0.01 µF 100 V ±10% X7R C0603 C0603X7R101-103K Venkel
1 C2 3.3 nF 100 V ±10% X7R C0805 C0805X7R101-332K Venkel
1 C3 100 µF 6.3 V ±10% X5R C1210 C1210X5R6R3-107K Venkel
1 C4 330 µF 10 V ±20% Alum_Elec C3.5X8MM-RAD 860160274017 Wurth
Elektronik
1 C6 22 nF 25 V ±5% C0G C0805 C0805C0G250-223J Venkel
1 C8 12 µF 100 V ±20% Alum_Elec C2.5X6.3MM-RAD EEUFC2A120 Panasonic
1 C9 1 µF 100 V ±10% X7R C1210 C1210X7R101-105K Venkel
1 D1 SDT10A45P5 10 A 45 V Schottky POWERDI-5 SDT10A45P5-7 Diodes Inc.
1 D2 RS1B 1.0 A 100 V Single DO-214AC RS1B Fairchild
1 D3 Green LED-0805-K-K1A2 XZVG54W-8 SunLED
1 D5 DFLT40A-7 3.49 A 40 V Zener POWERDI-123 DFLT40A-7 Diodes Inc.
8
D7, D8, D9,
D10, D11,
D12, D13,
D14
S1B 1.0 A 100 V Single DO-214AC S1B Fairchild
4FB1, FB2,
FB3, FB4 1500 1000 mA SMT L0805 742792097 Wurth
2 J1, J2 BND_POST 15 A Banana Banana-jack 101 Abbatron
HH Smith
2 JP1, JP2 Header 1x2 Header CONN1X2 TSW-102-07-T-S Samtec
1LB1
LABEL-Si3406-EVB-
ISO-FB-R4.2-5V
Polyimide,
white PTL-14-717 LABEL-Si3406-EVB-ISO-FB-R4.2-5V Skyworks
4MH1, MH2,
MH3, MH4 4 to 40 Screw MH-125|MH-125NP NSS-4-4-01 Richco Plastic Co.
1PCB1
Si3406-EVB-ISO-FB
REV 4.0 Bare PCB N/A Si3406-EVB-ISO-FB REV 4.0 Skyworks
1 R10 2.7 k1/10 W ±1% ThickFilm R0805 CR0805-10W-2701F Venkel
1 R11 2.2 k1/10 W ±1% ThickFilm R0805 CR0805-10W-2201F Venkel
1R12 36.5k1/10 W ±1% ThickFilm R0805 CR0805-10W-3652F Venkel
1 R14 510 1/10 W ±1% ThickFilm R0805 CR0805-10W-5100F Venkel
3R15, R16,
R21 0 2 A ThickFilm R0805 CR0805-10W-000 Venkel
1R17 751/10 W ±1% ThickFilm R0805 CR0805-10W-75R0F Venkel
1 R18 130 k1/10 W ±1% ThickFilm R0805 CR0805-10W-1303F Venkel
1R19 24.3k1/8 W ±1% ThickFilm R0805 CRCW080524K3FKEA Vishay

LinkCom PC07xx-001R-A Transformer Second Source for Si3406-ISO-FB-EVB
Skyworks Solutions, Inc. • Phone [949] 231-3000 • sale[email protected] • www.skyworksinc.com
206567A • Skyworks Proprietary Information • Products and Product Information are Subject to Change without Notice
19 May 10, 2023
1 R2 82 k1/10 W ±5% ThickFilm R0805 CR0805-10W-823J Venkel
1R20 12.1k1/10 W ±1% ThickFilm R0805 CR0805-10W-1212F Venkel
1 R22 470 1/4 W ±1% ThickFilm R1206 CR1206-4W-4700F Venkel
1 R3 470 1/10 W ±1% ThickFilm R0805 CR0805-10W-4700F Venkel
1R4 4.31/8 W ±1% ThickFilm R0805 CR0805-8W-4R30F Venkel
1R5 1.21/10 W ±5% ThickFilm R0805 CR0805-10W-1R2J Venkel
1R7 101/10 W ±1% ThickFilm R0805 CR0805-10W-10R0F Venkel
1R8 31/8 W ±1% ThickFilm R0805 CR0805-8W-3R00FT Venkel
4SO1, SO2,
SO3, SO4 Standoff Standoff 2397 SPC Technolo gy
1 T1 PC0705-001R-A 5 V Flyback XFMR-EP10 PC0705-001R-A LinkCom
3TP1, TP12,
TP17 Red Loop Testpoint 5000 Keystone
6
TP8, TP9,
TP10, TP13,
TP14, TP15
Black Loop Testpoint 5001 Keystone
1 U2 RJ-45 Receptacle RJ45-74982104400 74982104400 Wurth
Elektronik
1 U3 Si3406 120 V PD QFN20N5X5P0.8 Si3406-A-GM Skyworks
1 U4 VO618A-3X017T SO4N10.16P2.54-
AKEC VO618A-3X017T Vishay
1 U5 TLV431 Shunt TLV431-DBZ TLV431BCDBZR TI
Not Installed Components
1 C11 0.22 µF 16 V ±10% X7R C0805 C0805X7R160-224KNE Venkel
8
C20, C21,
C22, C23,
C24, C25,
C26, C27
1 nF 100 V ±10% X7R C0603 C0603X7R101-102K Venkel
4C28, C29,
C30, C31 1 nF 2000 V ±5% X7R C1206 C1206C102JGRACTU Kemet
1 C5 100 µF 6.3 V ±10% X5R C1210 C1210X5R6R3-107K Venkel
1 C7 1 µF 100 V ±10% X7R C1210 C1210X7R101-105K Venkel
2 D15, D16 SMAJ58CA 400W 58 V TVS DO-214AC SMAJ58CA Littelfuse
1 L5 1 µH 2.4A ±20% Shielded L0805 TFM201208ALD-1R0MTCA TDK
1 Q1 NVTFS6H888NLTAG 14A 80 V N-CHNL POWER33 NVTFS6H888NLTAG ON Semi
1R1 1k1/10W ±1% ThickFilm R0805 CR0805-10W-1001F Venkel
1R13 02A ThickFilm R0805 CR0805-10W-000 Venkel
1R6 101/10W ±1% ThickFilm R0805 CR0805-10W-10R0F Venkel
1 R9 24 k1/10W ±1% ThickFilm R0805 CR0805-10W-2402FT Venkel
1 T2 1200 µH none 1500 V none XFMR-PA0184NL PA0184NL Pulse
Engineering
7
TP2, TP3,
TP4, TP5,
TP6, TP11,
TP16
Black LOOP Testpoint 5001 Keystone
Table 5. Si3406 Isolated Flyback 5 V Bill of Materials with the LinkCom PC0705-001R-A
Qty Ref Value Rating Voltage Tol Type PCB
Footprint Mfr PN Mfr

LinkCom PC07xx-001R-A Transformer Second Source for Si3406-ISO-FB-EVB
Skyworks Solutions, Inc. • Phone [949] 231-3000 • sale[email protected] • www.skyworksinc.com
206567A • Skyworks Proprietary Information • Products and Product Information are Subject to Change without Notice
20 May 10, 2023
4. Si3406-ISO-FB EVB: 12 V, Class 2 Configuration
4.1. Si3406-ISO-FB EVB Schematic: 12 V, Class 2, 7W
Figure 18 shows the schematic of the Si3406-ISO-FB 12 V, Class 2 EVB. The parts in red on the schematic represent
the BOM differences compared to the official EVB. The parts in gray are not installed on the EVB, but they have
footprints.
Figure 18. Si3406-ISO-FB Isolated EVB Schematic (12 V, Class 2 PD, 7 W)