SI3461-E01-GM Silicon Laboratories Inc, SI3461-E01-GM Datasheet
SI3461-E01-GM
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SI3461-E01-GM Summary of contents
Page 1
... The Si3461 is designed to operate completely independently of host processor control. An LED status signal is provided to indicate the port status, including detection, power good, and output fault event information. The Si3461 is pin- programmable to support four available power levels, endpoint and mid-span applications, and auto-retry or restart after disconnect functions ...
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... Si3461 2 Rev. 0.3 ...
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... T C ABLE O F ONTENTS Section 1. Typical Application Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 2. Si3461 Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 3. Si3461-EVB Performance Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 4. PSE Timing Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 5. Typical Si3461-EVB Waveforms Si3461-EVB Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 6.1. Reset State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 6.2. Operating Mode Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 7. Operating Mode Sequencing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 7.1. Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 7.2. Classification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 7 ...
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... Si3461 1. Typical Application Schematic +50V V IN +50V Optional 3.3V regulator V DD +3.3V GND GND Note: Refer to the Si3461-EVB User Guide for complete schematic details Figure 1. Si3461 Typical Application Schematic 4 VDD CLSMARK DC1 DC2 Si3461 CLSMODE DETA RST VSENSE ISENSE STATUS DETECT ...
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... Si3461 Electrical Specifications The following specifications apply to the Si3461 controller. Refer to Tables 4, 5 and the Si3461-EVB User's Guide, and schematics for additional details about the electrical specifications of the Si3461-EVB reference design. Table 1. Recommended Operating Conditions Description Symbol Operating temperature range Thermal impedance VDD input supply voltage Table 2 ...
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... Si3461 Table 3. Electrical Characteristics* Description Symbol Digital Pins: CLSMARK, DC1, DC2, CLSMODE, STATUS (Output mode), RST V Output high voltage OH V Output low voltage OL V Input high voltage IH V Input low voltage IL I Input leakage current IL Analog Pins: ISENSE, VSENSE, DETA, STATUS (Input mode) ...
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... Si3461-EVB Performance Characteristics When implemented according to the recommended external components and layout guidelines for the Si3461- EVB, the Si3461 enables the following performance specifications in single-port PSE applications. Please refer to the Si3461-EVB User's Guide and schematics for details. Table 4. Selected Electrical Specifications (Si3461-EVB) ...
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... Si3461 Table 4. Selected Electrical Specifications (Si3461-EVB) (Continued) Description Symbol Classification Specifications Classification voltage V CLASS Classification current I CLASS limit Classification current I _ CLASS REGION region Mark voltage V MARK Mark current I MARK_LIM Protection and Current Control Overload current I CUT 2,3 threshold 4 I Overload current limit ...
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... Table 4. Selected Electrical Specifications (Si3461-EVB) (Continued) Description Symbol Efficiency System efficiency Notes: 1. Typical specifications are based on an ambient operating temperature of 25 °C and VIN = +50 V unless otherwise specified. 2. Absolute classification current limits are configurable. See “7.2. Classification” and "7.3. Power-Up" on page 14. ...
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... Si3461 4. PSE Timing Characteristics When implemented in accordance with the recommended external components and layout guidelines, the Si3461 controller enables the following typical performance characteristics in single-port PSE applications. Refer to the Si3461-EVB applications note, schematics, and user's guide for more details. Description Symbol ...
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... CLASS_CYCLE Classification t PWRUP PoE+ Current Limit Response t LIM PoE+ Figure 2. Typical Si3461-EVB Waveforms Powering a PoE Device Ch1: PoE output voltage referenced to the +50V rail Detection Classification Power-on Classification and Power-up Delay PoE Ch1: PoE output voltage referenced to the +50V rail Detection ...
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... In combination with low-cost external components, the Si3461 controller provides a complete PSE solution for embedded PoE applications. The Si3461-EVB reference design operates from a +50 V isolated power supply and delivers power to the powered device through a FET switch without controlling the output voltage while in the power-on state ...
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... At power reset is held low, the Si3461 inactive state with the pass FET Q4 off. 6.2. Operating Mode Configuration At power up, the Si3461 reads the voltage on the STATUS pin, which is set by a DIP switch and a resistor network. The STATUS pin voltage level configures all of the Si3461's operating modes as summarized in the next table. ...
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... PD (refer to Table 4 for current ranges). If the Si3461-EVB has available power it attempts to classify a Type2 PD first by the two event method. If the detected class is other than Class 4 or there is less than power available, the Si3461 tries to classify a Type1 PD using the one event method. ...
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... The Si3461 implements a robust disconnect algorithm. If the output current level drops below 7.5 mA typical for more than 350 ms, the Si3461 will declare a PD disconnect event, and the pass FET will be turned off. The Si3461 will automatically resume the detection process after 500 ms. ...
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... IEEE 802.3 compliance. 8.3. Input DC Supply The Si3461-EVB reference design requires an isolated 50 V nominal dc input voltage (with a minimum and a maximum of 57 V). The input power supply should be rated for at least 10% higher power level than the output power level chosen. ...
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... Si3461 Pin Descriptions Si3461 pin functionality is described in Table 7 on page 17. Note that the information applies to the Si3461 device pins, while the Si3461-EVB User's Guide describes the inputs and outputs of the evaluation system. Refer to the complete Si3461-EVB schematics and BOM listing for information about the external components needed for the complete PSE application circuit ...
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... TUS pin becomes a digital output used to control an external LED, which indicates when a detect, power good, or output fault condi- tion has occurred. Logic high turns the LED on, and logic low turns the LED off. Refer to section "Status LED Function". Ground connection for the Si3461. Rev. 0.3 ...
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... Si3461-E01-GM Single-port PSE controller Si3461-KIT Si3461 evaluation board and reference Notes: 1. Add R to part number to denote tape-and-reel option (e.g., Si3461-E01-GMR). 2. The ordering part number above is not the same as the device mark. See "11.3. Marking Specification" on page 23 for more information. Description Package ...
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... Si3461 11. Package Outline: 11-Pin QFN Figure 4 illustrates the package details for the Si3461. Table 8 lists the values for the dimensions shown in the illustration. The Si3460 is packaged in an industry-standard, 3x3 mm, RoHS-compliant, 11-pin QFN package. Table 8. Package Diagram Dimensions Dimension aaa bbb ddd ...
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... Solder Paste Mask 0.10 mm 0.35 mm 0.50 mm 0. 0.50 mm 0.35 mm 0. 0.60 mm 0. Figure 5. Solder Paste Mask Rev. 0.3 Si3461 0. ...
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... Si3461 11.2. PCB Landing Pattern 0.10 mm 0.35 mm 0.50 mm 0. Figure 6. Typical QFN-11 Landing Diagram 0. Rev. 0.3 ...
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... Marking Specification The top of the Si3461 package is marked as shown in Figure 7. Line 1 Marking: Pin 1 Identifier Product ID Line 2 Marking: ETTT = Trace Code Line 3 Marking: YWW = Date Code Lead-Free Designator 6101 ETTT YWW+ Figure 7. QFN 11 Top Marking Table 9. Top Marking Explanation Circle = 0.25 mm Diameter 6101 61 = Si3461 ...
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... Si3461 OCUMENT HANGE IST Revision 0.1 to Revision 0.2 Updated "11.3. Marking Specification" on page 23. Revision 0.2 to Revision 0.3 Updated "10. Ordering Guide" on page 19. 24 Rev. 0.3 ...
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... N : OTES Rev. 0.3 Si3461 25 ...
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... Si3461 C I ONTACT NFORMATION 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. ...