SI3480MS8-KIT

Si3480MS8-KIT E VALUATION K IT U SER ’ S G UIDE FOR TH E Si3480 POWER MANAGEMENT CONTROLLER 1. Introduction In Power over Ethernet (PoE) Power Sourcing Equipment (PSE), typically, not all PoE ports are connected to loads, and the ports that are connected to loads draw substantially less than the maximum power defined in the IEEE standard (30 W). For this reason, it is normal to use a power supply that is not capable of supplying full power to all ports and to add a system-level power management function to deal with the rare situations in which the system power supply becomes overloaded by selectively not granting power or by turning off ports in priority order. In these situations, the system user can redistribute loads, add a larger power supply, or add more PSE systems as needed. The Si3480 works with the Si3452 PoE controllers and implements power management to enable the use of smaller, lower-cost, and more efficiently-utilized power supplies in unmanaged PSE systems with up to eight ports. The Si3480 also supports LED indication of port status and power supply consumption. The Si3480MS8 evaluation board contains the Si3480 power manager, two Si3452 PoE controllers, a –50 V to +3.3 V dc-to-dc converter based on an Si3500, status LEDs, and Ethernet coupling circuitry. For demonstration purposes, Class 3 and Class 4 Powered Device (PD) loads are supplied with the evaluation system. Various load resistors (also supplied) can be used to simulate normal and overload conditions. 2. Evaluation Board Overview Figure 1 shows a photo of the evaluation board with highlights of the major functional blocks. The PoE coupling circuit and Ethernet connectors are arranged as a “mid-span” power injector. Ethernet without power is connected to the top row of connectors, and Ethernet with power injected is connected to the bottom row of connectors. J300 is for the four ports connected to U1, and J301 is for the four ports connected to U2. If only the PSE function is being evaluated, only the bottom row of connectors needs to be used. Table 1 lists the contents of the Si3480MS8 evaluation kit. Table 1. Si3480MS8 Evaluation Kit Contents Part Number Quantity Si3480-EVB 1 The Si3480 evaluation board shown in Figure 1. Si3402ISO-EVB 2 A powered device with Class 3 signature (15.4 W maximum). Si3402ISO-C4-EVB 1 A powered device with Class 4 signature (30 W maximum). 3 Ethernet cables for connecting the powered devices. 3 Load board with three 5  loads. Each resistor that is connected will draw about 6.5 W of input power from the PSE. Rev. 0.2 10/10 Description Copyright © 2010 by Silicon Laboratories Si3480MS8-KIT Si3480MS8-KIT J1 Si3480 J2 Si3500 –50 to + 3.3 V J3 Converter Programming Power JP1 Power Meter Si3452 Controllers Port Status LEDs PoE Coupling Circuit RJ45 Connectors Port 1 Port 2 Port 3 Port 4 Port 5 Port 6 Port 7 Figure 1. Si3480 Evaluation Board Functional Blocks 2 Rev. 0.2 Port 8 Si3480MS8-KIT 3. Using the Si3480 Evaluation Board 3.1. Board Power A nominal 50 V power supply is connected to J101. For high-power (PoE+) support according to the IEEE standard, the supply voltage should be between 51 and 57 V. For normal power levels, the power supply can be 45 to 57 V. The total power supply wattage is normally in the range of 30 to 150 W. The large diode, D100, will be forward-biased in case of accidental wrong input polarity. It is recommended that the power supply be connected to the board and then turned on so as to prevent large inrush current from charging the two 33 µF filter capacitors on the board. 3.2. Jumper Settings Jumper JP1 sets the timing configuration. Since the board implements Alterative B wiring, the normal setting of JP1 is tied high (+3.3 V side). The Si3482 can support Alternative A timing by setting JPI low. Jumpers J1, J2, and J3 set the voltage on the Si3480 programming pins. The voltage is set by a resistor ladder as shown in Figure 2.   Figure 2. Si3480 Programming Jumpers The silk-screen numbers 1, 2, 4, 8 refer to the resistor weighting; so, the jumper near the “1” is the MSB, and the jumper near the “8” is the LSB. The voltage on the output pin (MD in Figure 2) as well as the way in which this is interpreted by the Si3480 is shown in Table 2. Table 2. Possible Jumper Settings Jumper J1 Pin Voltage (VDD = 3.3 V) System Power J2 PoE+ Enable J3 Port Priority 1 2 4 8 0 0 0 0 0.00 V 0 No ports PoE+ All same 0 0 0 1 0.22 V 13.3 W Port 1 Port 1 high priority 0 0 1 0 0.44 V 26.7 W 0 0 1 1 0.66 V 40 W Ports 1,2 Ports 1,2 high priority 0 1 0 0 0.88 V 53.3 W 0 1 0 1 1.10 V 66.7 W Ports 1–3 Ports 1–3 high priority 0 1 1 0 1.32 V 80 W Rev. 0.2 3 Si3480MS8-KIT Table 2. Possible Jumper Settings (Continued) Jumper J1 Pin Voltage (VDD = 3.3 V) System Power 1 2 4 8 0 1 1 1 1.54 V 93.3 W 1 0 0 0 1.76 V 106.7 W 1 0 0 1 1.98 V 120 W 1 0 1 0 2.20 V 133.3 W 1 0 1 1 2.42 V 146.7 W 1 1 0 0 2.64 V 160 W 1 1 0 1 2.86 V 173.3 W 1 1 1 0 3.08 V 186.7 W 1 1 1 1 3.30 V 200 W J2 PoE+ Enable J3 Port Priority Ports 1–4 Ports 1–4 high priority Ports 1–5 Ports 1–5 high priority Ports 1–6 Ports 1–6 high priority Ports 1–7 Ports 1–7 high priority All ports PoE+ All same In a system where the voltage at the pin will be fixed, the jumper arrangement can be replaced with a simple resistor divider. The A/D reference voltage for the Si3480 is VDD; so, as VDD varies, the Si3480 is only sensitive to the ratio of resistors. 3.3. LEDs Upon power application or reset (by SW1 in the upper left corner), the Si3480 probes to see whether there are one or two Si3452 ICs connected (4 or 8 ports). The Si3480 then controls the LED display in the startup sequence described and automatically starts managing the power among the ports as determined by the jumper settings. After startup, the power meter and port status LEDs give a visual indication of the Si3480 operation. 3.3.1. Start-Up LED Sequence During startup, the LEDs are lit in the sequence listed in Table 3 (1 second for each step). Table 3. Startup Sequence Step 4 Action 1 All LEDs on. 2 Port 1 LED and either four or eight power meter LEDs to indicate the number of 4-port controllers found by the Si3480 (no LEDs if no controllers are found). 3 Port 2 LED and zero to eight power meter LEDs to indicate the provided power as determined by reading the voltage at the PWRCFG pin in 25 W steps (For example, two LEDs is 50 W). 4 Port 3 LED and zero to eight power meter LEDs to indicate the number of PoE+ ports as determined by reading the voltage at the POECFG pin. 5 Port 4 LED and zero to eight power meter LEDs to indicate the number of high-priority ports as determined by reading the voltage at the PRIOCFG pin. Rev. 0.2 Si3480MS8-KIT 3.3.2. Port Status LEDs After the startup sequence, the port status LEDs display the patterns listed in Table 4 to indicate port status. Table 4. Port LED Pattern Definitions Port LED Pattern Meaning Flashing once every two seconds Detection and Classification in process. Continuously lit PoE port is on. Blinks off once every two seconds PoE+ port is on with a class 4 PD load (30 W granted). Flashing five times per second Port overloaded. Flashing twice every two seconds Power denied due to lack of power. For a port overload, an open circuit must be seen before the port is re-enabled; that is, the PD must be unplugged, and the overload must be cleared. Ports are turned off in priority order if more than the available power is being consumed. If the amount of power consumed is >10% more than the available power, all low priority ports are shut off immediately. Ports are not granted power unless there is enough power available to grant the requested power (based on classification) with 15% margin. The 15% margin generally avoids situations where a port is granted power and then later turned off due to lack of power. If a port is turned off or denied power due to a lack of available power, the LED continues flashing twice every two seconds until enough power is available to turn the port on or the PD is unplugged. 3.3.3. Power Meter LEDs The power meter LEDs light consecutively, indicating the amount of power that is being consumed. There are eight LEDs in the power meter. The LEDs will light in bar graph fashion: Number_LEDs_Lit = 8 x Total_Power_Consumed / (0.85 x Provided_Power – 4 W) (rounded down) The eighth power meter LED is generally a red LED. If this LED is lit, it means that there is not enough power available to grant even a Class 1 load power and maintain a 15% margin. The eighth LED is flashed five times per second if the Si3452 controllers report a power supply undervoltage. 3.4. Demonstration Using the Supplied Loads The Si3480MS8-KIT ships with three powered devices based on the Si3402 with loads for up to approximately 18 W of input power. The loads are arranged as one to three 5  resistors, which draw 5 W each at the PD output voltage of 5 V. Due to the PD input diode bridge and the dc-to-dc conversion efficiency, each resistor causes approximately 6.5 W of power to be drawn from the PSE. This means that the PD will draw 6.5, 13, or 19.5 W from the PSE, depending on the number of load resistors connected. The Si3402 loads and resistors can be used to demonstrate most of the operation of the Si3480. In the following example, it is assumed that the Si3480 board is connected to a 50 V power supply with a capacity of at least 40 W. Step 1: Set the Jumpers. Table 5. Jumper Settings J1 System Power 0011 40 W of power provided. J2 PoE+ enable 0001 Only port 1 is PoE+. J3 Port priority 0001 Only port 1 is high priority. Because the system power is set to 40 W, the power meter display during normal operation is: Number_LEDs_Lit = 8 x Total_Power_Consumed / (0.85 x 40 W – 4 W) (rounded down) = Total_Power_Consumed/3.75 W (rounded down) Rev. 0.2 5 Si3480MS8-KIT Thus: Number of LEDs Power Consumed (W) Total Number of Load Resistors 0 0–3.75 1 3.75–7.5 2 7.5–11.25 3 11.25–15 4 15–18.75 5 18.75–22.5 3 loads (19.5 W) 6 22.5–26.25 4 loads (26 W) 7 26.25–30 8 >30 1 load (6.5 W) 2 loads (13 W) 5 loads (32.5 W) 6 loads (39 W) System Overload 7 loads (45.5 W) Step 2: Apply the –50 V Power. Observe the power up LED sequence of one second at each step: 1. All LEDs 2. Port 1 LED and eight power meter LEDs to indicate two Si3452 port controllers found by the Si3480 3. Port 2 LED and two power meter LEDs to indicate the provided power is between 25 and 50 W 4. Port 3 LED and one power meter LEDs to indicate one PoE+ port 5. Port 4 LED and one power meter LEDs to indicate one high priority port After the power up sequence, the port LEDs flash once every two seconds to indicate detection in process. Step 3: Connect a Class 3 PD with one load resistor into Port 1 and a Class 4 PD with one load resistor into Port 2.  The Port 1 LED is continuously lit to indicate the port is powered and is not PoE+ (because a Class 3 load was connected).  The Port 2 LED is continuously lit to indicate the port is powered and is not PoE+ (because the port has not been enabled for POE+). Three power meter LEDs are lit due to the 13 W of power consumption. Step 4: Disconnect the PDs from Step 1, and connect the Class 4 PD to Port 1 and Class 3 PDs to each of Ports 2 and 3. Initially, use one load resistor on each PD.  The port status LED on port 1 is on but blinks off every two seconds to indicate Port 1 is powered as PoE+.  The Port 2 and Port 3 LEDs are continuously lit to indicate those ports are powered and not PoE+.  The power meter LED has five LEDs lit due to the 19.5 W of power consumption. Step 5: Increase the Load on the Ports to create a port overload by switching in more load resistors.  For Port 2 or Port 3 (with Class 3 PDs), the port overload condition occurs with the three resistors, which corresponds to about 19.5 W of input power.  When the overload occurs, the port status LEDs flash five times per second to indicate that the overload has occurred and the port is turned off.  To reset the port, decrease the load back to one resistor; unplug the PD, and plug it back in. 6 Rev. 0.2 Si3480MS8-KIT  For Port 1 (PoE+ port with Class 4 PD), the overload does not happen even with 19.5 W being drawn by the PD. Note that, in this case, the load resistors and PD will get hot, so use care. Step 6: Demonstrate the port priority and system overload protection features.       Disconnect all PDs and then connect the Class 3 PDs to Ports 2 and 3 with two load resistors so they are drawing 13 W each (26 W total power). Connect the Class 4 PD with three resistors (19.5 W) to Port 1. Port 1 is granted power, and a system level overload is created with approximately 45.5 W. Either Port 3 or Ports 2 and 3 will be turned off depending on whether the Si3480 reported a severe overload (>44 W). Because the PDs have a soft start circuit, it is possible that only Port 3 is turned off when the power exceeds 40 W. The ports that are turned off will not turn back on until the load on port 1 is reduced. 3.5. Higher Power Applications The 40 W power supply used in “3.4. Demonstration Using the Supplied Loads” is typical of a PSE system that supports PoE+ on one port and is not expected to have PDs on all ports. By using a higher power supply and setting the jumpers appropriately, the evaluation system can be used for higher power applications. As the available power is increased, it becomes increasingly difficult to create a system-level overload. Rev. 0.2 7 3.3V 3.3V PoE+ enable Mode_SW Port Priority Mode_SW MD 1 2 3 GND MD GND MD GND J101 CONN TRBLK 2 1 2 3.3V +3V3 System power Mode_SW HEADER 1x3 JP1 P0.5 P0.6 P0.7 P0.4 P1.0 P1.1 P1.2 P1.3 C103 0.1uF Rev. 0.2 -52V D100 MBRS3100T3 INPUT POWER Status LEDs 13 12 11 10 17 16 15 14 P1.0 P1.1 P1.2 P1.3 P0.4 P0.5 P0.6 P0.7 SW PUSHBUTTON R110 1K 33uF C104 P0.0 P0.1 P0.2 P0.3 P1.7 P1.6 P1.5 P1.4 1 20 19 18 6 7 8 9 Thermometer LEDs + 33uF C105 + 1 3 5 7 9 J6 2 4 6 8 10 2 4 6 8 10 Q4 Q5 +3V3 NI 1K R101 R102 1K +1V1REG RST TP102 BLACK GND -52V TP103 BLACK GND -52V_RTN TP104 BLACK GND +3V3_RTN +3V3 -52V->+3.3V Converter VREG MMBT3906-7-F MMBT3904 5X2 Shrouded Header 1 3 5 7 9 +3V3 NI VREF_IN RESET_L SDA SCL INT HV Port Controllers VOUT0 VOUT1 VOUT2 VOUT3 VOUT4 VOUT5 VOUT6 VOUT7 D101 GREEN 3.3V PWR R105 330 -52V TPV4 TPV TPV2 TPV +3V3 VOUT0 VOUT1 VOUT2 VOUT3 VOUT4 VOUT5 VOUT6 VOUT7 PWR Status LED +3V3 Figure 3. Si3480 and Top Level R104 44.2K BULK DECOUPLING P1.7 P1.6 P1.5 P1.4 SDA_P0.0 SCL_P0.1 P0.2 U101 P0.3 Si3480 C2D C2CK C101 1uF 5 4 R111 P2.0_C2D RST_C2CK +3V3 RST GND 2 SW1 Bank LED_1_5 LED_2_6 LED_3_7 LED_4_8 3 VDD 1K Bank LED_1_5 LED_2_6 LED_3_7 LED_4_8 R100 10K -52V +3V3 -52V C100 -52V +3V3_RTN 1uF +3V3 +3V3 +3V3 -52V_RTN 8 -52V +3V3 +3V3 267 R106 RTN0 RTN1 RTN2 RTN3 RTN4 RTN5 RTN6 RTN7 C106 10uF U100 TLV431 +1.24REG +1V1 Reg VOUT0 VOUT1 VOUT2 VOUT3 VOUT4 VOUT5 VOUT6 VOUT7 POE_OUT PoE magnetics and connector R108 2.1K +1V1REG R107 267 Si3480MS8-KIT 4. Detailed Schematics, BOM, and Layout The following figures show the detailed schematics, bill of materials, and layout for the Si3480 evaluation board. 4.1. Schematics 10K R2 10K VREF_IN RESET_L SDA SCL R1 INT R3 10K C3 0.1uF VREF_IN RESET -52V 44.2K R9 SDA SCL INT 7 3 9 4 5 6 38 14 16 26 21 23 28 27 25 24 40 34 36 1 31 22 10 U1 -52V Si3452 RBIAS VREF_IN OSC AIN AOUT AGND RST AD0/SDA AD1/SCL AD2 AD3 RST AD0 AD1 AD2 AD3 INT TX/AD0 RX/AD1 VEE1 VEE2 VEE3 VEE4 DGND AGND 29 8 R4 10K C1 0.1uF +3V3 SI3452 IC NC VOUT4 DET4 VOUT3 DET3 VOUT2 DET2 VOUT1 DET1 11 17 12 13 20 18 32 33 39 37 C2 0.1uF C4 0.1uF VOUT3 VOUT2 VOUT1 VOUT0 C5 0.1uF INT R6 10K VREF_IN R7 10K R5 10K -52V SDA SCL RESET VREF_IN C12 0.1uF +3V3 Figure 4. Si3452 Controllers -52V -52V_RTN C9 0.1uF C8 0.1uF C7 0.1uF C6 0.1uF R8 10K 19 30 VDD VDD VEE VEE EPAD 2 -52V GND34 GND12 15 35 +3V3_RTN -52V 44.2K R10 INT 7 3 9 4 5 6 38 14 16 26 21 23 28 27 25 24 40 34 36 1 31 22 10 -52V Si3452 RBIAS VREF_IN OSC AIN AOUT AGND RST AD0/SDA AD1/SCL AD2 AD3 RST AD0 AD1 AD2 AD3 INT TX/AD0 RX/AD1 VEE1 VEE2 VEE3 VEE4 U2 C10 0.1uF DGND AGND 29 8 +3V3 19 30 SI3452 VDD VDD VEE VEE EPAD 2 -52V IC NC VOUT4 DET4 VOUT3 DET3 VOUT2 DET2 VOUT1 11 17 12 13 20 18 32 33 39 37 C11 0.1uF DET1 GND34 GND12 15 35 Rev. 0.2 C13 0.1uF -52V +3V3 C14 0.1uF C18 0.1uF C17 0.1uF C16 0.1uF C15 0.1uF VOUT7 VOUT6 VOUT5 VOUT4 Si3480MS8-KIT 9 Rev. 0.2 -52V R150 5.6 C150 0.1uF R157 10K NC ISOSSFT Vdd SSFT 25.5K R151 4 3 2 1 Vneg C158 0.1uF C161 0.33uF Vssa C156 22uF Figure 5. –52 V to +3.3 V Converter 30 Ohm FB151 C155 470uF Optional short circuit protection. Si3500 Vposf Q1 MMBT3904 11 12 9 NC Vneg NC NC 8 13 10 EROUT 7 14 HSO U152 15 Vssa RDET 6 Vssa 16 Vposs MBRS1100 D301 17 VSS1 C153 1uF 18 SWO +3V3 19 VSS2 NC 21 20 FB NC 5 10 EPAD C152 1uF + L151 33uH 4.7nF C159 +3V3 C162 150pF R156 4.87K R155 2.87K 4.7nF C160 -52V_RTN +3V3_RTN +3V3 Si3480MS8-KIT +3V3 R153 30.1K -52V Si3480MS8-KIT B3 B6 MX1+ MX1- MX1+ MX1- B7 B8 MX3+ MX3- MX3+ MX3- MX1+ MX1- D7 D8 FA2536-ALD 0.1uF C318 0.1uF C319 0.1uF C315 RJ-45 MX0+ MX0- MX0+ MX0- F3 F6 MX1+ MX1- MX1+ MX1- F7 F8 RTN2 3 6 RJ-45 MX2+ MX2- MX2+ MX2- MX3+ MX3- MX3+ MX3- E4 E5 E7 E8 0.1uF C320 0.1uF C321 0.1uF C322 0.1uF C323 VOUT6 L302A L302B FA2536-ALD FA2536-ALD C326 0.1uF C327 MX0+ MX0- H3 H6 MX1+ MX1- MX1+ MX1- H4 H5 H7 H8 RJ-45 6 VOUT3 L303B MX0+ MX0- MX2+ MX2MX3+ MX3RJ-45 RTN3 MX1+ MX1- F4 F5 MX2+ MX2- F7 F8 MX3+ MX3RJ-45 MX2+ MX2MX3+ MX3- G3 G6 G4 G5 G7 G8 0.1uF C328 0.1uF C329 0.1uF C330 0.1uF C331 RJ-45 L303A FA2536-ALD F3 F6 J301H VOUT7 6 C325 0.1uF MX0+ MX0- RTN6 J301G G1 G2 H1 H2 1 0.1uF 2 G7 G8 C324 3 MX3+ MX3- G4 G5 0.1uF 4 MX2+ MX2- G3 G6 5 MX1+ MX1- J301F F1 F2 L306A L306B FA2536-ALD FA2536-ALD J300H J300G G1 G2 FA2536-ALD E3 E6 RJ-45 RJ-45 MX0+ MX0- L305A J301E E1 E2 F1 F2 MX3+ MX3RJ-45 RTN5 FA2536-ALD J300F F4 F5 VOUT2 D7 D8 VOUT5 L307B FA2536-ALD FA2536-ALD H1 H2 MX0+ MX0- H3 H6 MX1+ MX1- H4 H5 MX2+ MX2- H7 H8 MX3+ MX3RJ-45 RTN7 1 C317 C314 1 E7 E8 0.1uF 2 E4 E5 4 MX3+ MX3- E3 E6 5 MX2+ MX2- 0.1uF 2 J300E E1 E2 C316 C7 C8 C313 L305B MX0+ MX0- 0.1uF MX3+ MX3- 0.1uF L301A FA2536-ALD MX1+ MX1- MX2+ MX2- C4 C5 3 3 4 6 L301B MX3+ MX3RJ-45 RTN1 D4 D5 MX2+ MX2- C312 4 VOUT1 RJ-45 MX1+ MX1- 0.1uF 6 C311 D3 D6 6 0.1uF MX2+ MX2- C3 C6 1 C310 2 C7 C8 0.1uF D4 D5 5 MX3+ MX3- C309 MX0+ MX0- 1 MX1+ MX1- 0.1uF D1 D2 1 D3 D6 J301D J301C C1 C2 2 C3 C6 RJ-45 FA2536-ALD 3 MX0+ MX0- 4 J300D RTN4 L304A FA2536-ALD MX0+ MX0- C4 C5 VOUT4 L304B D1 D2 MX2+ MX2- C307 FA2536-ALD J300C C1 C2 C308 0.1uF RJ-45 RJ-45 MX0+ MX0- 0.1uF C306 L300A FA2536-ALD MX1+ MX1- A7 A8 C305 0.1uF 2 MX3+ MX3- 0.1uF 4 L300B MX2+ MX2- A4 A5 6 6 RTN0 3 VOUT0 RJ-45 B4 B5 MX2+ MX2- C304 3 B7 B8 MX1+ MX1- 0.1uF 5 C303 MX2+ MX2- B3 B6 5 0.1uF B4 B5 A3 A6 5 C302 MX0+ MX0- 1 C301 0.1uF 2 A7 A8 0.1uF 4 MX3+ MX3- A4 A5 C300 5 MX2+ MX2- 0.1uF B1 B2 1 A3 A6 MX1+ MX1- J301B J301A A1 A2 2 MX0+ MX0- 3 MX0+ MX0- 4 B1 B2 5 J300B J300A A1 A2 MX0+ MX0- L307A FA2536-ALD Figure 6. Midspan Coupling Circuit Rev. 0.2 11 Si3480MS8-KIT PoE+ enable System Power 3.3V 3 1 2 4 5 7 8 10 11 6 9 12 GND Operating Mode J2 J1 3 3.3V R200 10K R201 20.0K R202 40.2K R203 80.6K 6 MD 9 12 R210 10K R211 20.0K R212 40.2K R213 80.6K 3 3.3V MD 1 2 4 5 7 8 10 11 6 9 12 HEADER 4x3 GND HEADER 4x3 J3 1 2 4 5 7 8 10 11 0 Bank Bank D11 D1 R61 100 GREEN LED_1_5 GREEN D15 100 D5 GREEN GREEN D12 D2 R62 R52 LED_2_6 LED_2_6 GREEN D6 GREEN GREEN D13 D3 R53 100 GREEN D7 R63 LED_3_7 R54 100 GREEN D17 100 GREEN D14 GREEN D4 LED_4_8 GREEN D16 100 100 LED_3_7 GREEN D8 R64 LED_4_8 GREEN D18 100 GREEN RED Figure 8. LEDs 12 20.0K R222 R223 0 Figure 7. Mode Selection R51 10K R221 HEADER 4x3 GND 0 LED_1_5 R220 Rev. 0.2 40.2K 80.6K MD Si3480MS8-KIT 4.2. Bill of Materials Table 6. Si3480-EVB Bill of Materials Item NI Qty Ref Value 50 NI 1 TP17 51 NI 1 PCB Footprint Mfr Part Number Mfr Red TESTPOINT 151-207-RC Kobiconn TP18 White TESTPOINT 151-201-RC Kobiconn 6 C1, C2, C3, C10, C11, C12 0.1 µF ±20% C0603 C0603X7R160-104M Venkel 2 14 C4, C5, C6, C7, C8, C9, C13, C14, C15, C16, C17, C18, C103, C150 0.1 µF ±20% C0603 C0603X7R101-104M Venkel 3 2 C100, C101 1 µF ±20% C0805 C0805X7R160-105M Venkel 4 2 C104, C105 33 µF ±20% C3.5X8MM-RAD ECA2AM330 Panasonic 5 1 C106 10 µF ±20% C0603 C0603X5R6R3-106M Venkel 6 2 C152, C153 1 µF ±10% C1210 C1210X7R101-105K Venkel 7 1 C155 470 µF ±20% C7343D T495D477M006ATE04572 80 Kemet 8 1 C156 22 µF ±20% C0805 C0805X5R6R3-226M Venkel 9 1 C158 0.1 µF ±10% C0603 C0603X7R250-104K Venkel 10 2 C159, C160 4.7 nF ±10% C0603 C0603X7R160-472K Venkel 11 1 C161 0.33 µF ±10% C0603 C0603X7R100-334K Venkel 12 1 C162 150 pF ±10% C0603 C0603X7R160-151K Venkel 32 C300, C301, C302, C303, C304, C305, C306,C307, C308, C309, C310, C311, C312, C313, C314, C315, C316, C317, C318, C319, C320, C321, C322, C323, C324, C325, C326, C327, C328, C329, C330, C331 0.1 µF ±20% C1210 C1210X7R251-104M Venkel 14 16 D1, D2, D3, D4, D5, D6, D7, D8, D11, D12, D13, D14, D15, D16, D17, D101 GREEN 20 mA LED-S-GW-AK LN1371G Panasonic 15 1 D18 RED 20 mA LED-S-GW-KA LN1271RAL Panasonic 1 13 Rating 45 mohm ESR Tol Rev. 0.2 13 Si3480MS8-KIT Table 6. Si3480-EVB Bill of Materials (Continued) Item Qty Ref Value Rating PCB Footprint Mfr Part Number Mfr 16 1 D100 MBRS3100T3 3A DO-214AB MBRS3100T3 On Semi 17 1 D301 MBRS1100 1A DO-214AA MBRS1100T3 On Semi 18 1 FB151 30  1000 mA L0603 BLM18PG300SN1 MuRata 19 1 JP1 HEADER 1x3 CONN-1X3 TSW-103-07-T-S Samtec 20 3 J1, J2, J3 HEADER 4x3 CONN3X4 TSW-104-07-G-T Samtec 2 J4, J5 DF9-17S-1V CONN-DF9-17S-1V DF9-17S-1V Hirose 22 1 J6 5X2 Shrouded Header CONN2X5-4W 5103309-1 Tyco 23 1 J101 CONN TRBLK 2 CONN-TB-1757242 1757242 Phoenix Contact 24 2 J300, J301 RJ-45 RJ45-8PORT 44170-0001 MOLEX 25 1 L151 33 µH 0.4 A IND-LPS4018 LPS4018-333ML Coilcraft 26 8 L300, L301, L302, L303, L304, L305, L306, L307, FA2536-ALD 675 µH IND-FA2536 FA2536-ALD Coilcraft 27 2 Q1, Q5 MMBT3904 200 mA SOT23-BEC MMBT3904 Fairchild 28 1 Q4 MMBT3906-7-F 200 mA SOT23-BEC MMBT3906-7-F Diodes Inc. 29 9 R1, R2, R3, R4, R5, R6, R7, R8, R157 10 k 1/10 W ±5% R0603 CR0603-10W-103J Venkel 30 3 R9, R10, R104 44.2 k 1/10 W ±1% R0603 CR0603-10W-4422F Venkel 31 8 R51, R52, R53, R54, R61, R62, R63, R64 100  1/10 W ±1% R0603 CR0603-10W-1000F Venkel 32 1 R100 10 k 1/10 W ±1% R0603 CR0603-10W-1002F Venkel 33 2 R101, R102 1 k 1/10 W ±1% R0603 CR0603-10W-1001F Venkel 34 1 R105 330  1/10 W ±1% R0805 CR0805-10W-3300F Venkel 35 2 R106, R107 267  1/10 W ±1% R0603 CR0603-10W-2670F Venkel 36 1 R108 2.1 k 1/16 W ±1% R0603 CR0603-16W-2101F Venkel 37 2 R110, R111 1 k 1/10 W ±5% R0603 CR0603-10W-1001J Venkel 38 1 R150 5.6  1/4 W ±5% R1210 CR1210-4W-5R6J Venkel 39 1 R151 25.5 k 1/16 W ±1% R0603 CR0603-16W-2552F Venkel 40 1 R153 30.1 k 1/16 W ±1% R0603 CR0603-16W-3012F Venkel 41 1 R155 2.87 k 1/16 W ±1% R0603 CR0603-16W-2871F Venkel 42 1 R156 4.87 k 1/16 W ±1% R0603 CR0603-16W-4871F Venkel 21 14 NI NI Tol 0.1 A ±20% Rev. 0.2 Si3480MS8-KIT Table 6. Si3480-EVB Bill of Materials (Continued) Item NI Qty Ref Value Rating Tol PCB Footprint Mfr Part Number Mfr 43 3 R200, R210, R220 10 k 1/16 W ±1% R0603 CR0603-16W-1002F Venkel 44 3 R201, R211, R221 20.0 k 1/16 W ±1% R0603 CR0603-16W-2002F Venkel 45 3 R202, R212, R222 40.2 k 1/10 W ±1% R0603 CR0603-10W-4022F Venkel 46 3 R203, R213, R223 80.6 k 1/16 W ±1% R0603 CR0603-16W-8062F Venkel 47 1 SW1 SW Pushbutton 50 mA SW-PB-MOM 101-0161-EV Mountain Switch 48 2 TPV2, TPV4 TPV VIA-TP N/A N/A 49 3 TPV50x, TPV50x1, TPV50x5 EPAD VIA-EPAD N/A N/A 52 3 TP102, TP103, TP104 Black TESTPOINT 151-203-RC Kobiconn 53 2 U1, U2 Si3452 QFN40N6X6P0.5 Si3452-A00-GM SiLabs 54 1 U100 TLV431 TLV431-DBZ TLV431BCDBZR TI 55 1 U101 Si3480 QFN20N4X4P0.5 Si3480 Silicon Labs 56 1 U152 Si3500 QFN20N5X5P0.8 Si3500 Silicon Labs Rev. 0.2 15 Figure 9. Component and Silk Screen Si3480MS8-KIT 4.3. Layout 16 Rev. 0.2 Figure 10. Top Layer Si3480MS8-KIT Rev. 0.2 17 Figure 11. Second Layer Si3480MS8-KIT 18 Rev. 0.2 Figure 12. Third Layer Si3480MS8-KIT Rev. 0.2 19 Figure 13. Bottom Layer Si3480MS8-KIT 20 Rev. 0.2 Si3480MS8-KIT DOCUMENT CHANGE LIST Revision 0.1 to Revision 0.2  Changed document name from Si3480MS8-EVB to Si3480MS8-KIT to reflect the evaluation kit name change. Rev. 0.2 21 Si3480MS8-KIT CONTACT INFORMATION Silicon Laboratories Inc. 400 West Cesar Chavez Austin, TX 78701 Tel: 1+(512) 416-8500 Fax: 1+(512) 416-9669 Toll Free: 1+(877) 444-3032 Please visit the Silicon Labs Technical Support web page: https://www.silabs.com/support/pages/contacttechnicalsupport.aspx and register to submit a technical support request. The information in this document is believed to be accurate in all respects at the time of publication but is subject to change without notice. Silicon Laboratories assumes no responsibility for errors and omissions, and disclaims responsibility for any consequences resulting from the use of information included herein. Additionally, Silicon Laboratories assumes no responsibility for the functioning of undescribed features or parameters. Silicon Laboratories reserves the right to make changes without further notice. Silicon Laboratories makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Silicon Laboratories assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. Silicon Laboratories products are not designed, intended, or authorized for use in applications intended to support or sustain life, or for any other application in which the failure of the Silicon Laboratories product could create a situation where personal injury or death may occur. Should Buyer purchase or use Silicon Laboratories products for any such unintended or unauthorized application, Buyer shall indemnify and hold Silicon Laboratories harmless against all claims and damages. Silicon Laboratories and Silicon Labs are trademarks of Silicon Laboratories Inc. Other products or brandnames mentioned herein are trademarks or registered trademarks of their respective holders. 22 Rev. 0.2