MIC9130 - Electronic component Microchip - Free user manual and instructions

USER MANUAL MIC9130 Microchip

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© 2018, Microchip Technology Incorporated, All Rights Reserved. ISBN: 978-1-5224-2804-6

Table of Contents

Preface 5

Introduction....5

Document Layout 5

Conventions Used in this Guide 6

Recommended Reading....7

The Microchip Web Site 7

Customer Support 7

Document Revision History 7

Chapter 1. Product Overview

1.1 Introduction ...... 9

1.2 MIC9130 Short Overview 9

1.3 MIC9130 Key Features 9

1.4 What Is the MIC9130 Power Over Ethernet Reference Design? 10

1.5 What Does the MIC9130 Power Over Ethernet Reference Design Kit Include? 12

Chapter 2. Installation and Operation

2.1 Introduction ...... 13

2.2 Board Features 13

2.3 How Does the MIC9130 Power Over Ethernet Work? 13

2.4 Setup and Testing the Board Procedure 14

2.4.1 Board Setup with PSE 14

2.4.2 Board Discrete Setup 14

2.5 Powered Device (PD) Controller Circuit 15

2.5.1 Detection Signature 15

2.5.2 Classification 15

2.5.3 Front End Analog Handshaking Limits 15

2.5.4 Power Mode 16

Appendix A. Schematic and Layouts

A.1 Introduction 17

A.2 Board – Schematic 18

A.3 Board – Top Silk Layer 19

A.4 Board – Top Copper and Silk Layer 20

A.5 Board – Top Copper Layer 21

A.6 Board – Bottom Copper Layer 22

A.7 Board – Bottom Copper and Silk Layer 23

A.8 Board – Bottom Silk Layer 24

Appendix B. Bill of Materials (BOM) 25

Appendix C. Plots and Waveforms

C.1 Flyback Converter Performance 29
C.2 Board Set Typical Waveforms 29
C.2.1 Bode Plot 32
C.3 Board Set Typical Measurements 33

Worldwide Sales and Service 35

Preface

NOTICE TO CUSTOMERS

All documentation becomes dated, and this manual is no exception. Microchip tools and documentation are constantly evolving to meet customer needs, so some actual dialogs and/or tool descriptions may differ from those in this document. Please refer to our website (www.microchip.com) to obtain the latest documentation available.

Documents are identified with a "DS" number. This number is located on the bottom of each page, in front of the page number. The numbering convention for the DS number is "DSXXXXXXXXA", where "XXXXXXXXX" is the document number and "A" is the revision level of the document.

For the most up-to-date information on development tools, see the MPLAB ^® IDE online help. Select the Help menu, and then Topics, to open a list of available online help files.

INTRODUCTION

This chapter contains general information that will be useful to know before using the MIC9130 Power Over Ethernet Reference Design. Items discussed in this chapter include:

• Document Layout
  • Conventions Used in This Guide
• Recommended Reading
  • The Microchip Web Site
• Customer Support
  • Document Revision History

DOCUMENT LAYOUT

This document describes how to use the MIC9130 Power Over Ethernet Reference Design as a compliant power solution. The manual layout is as follows:

• Chapter 1. “Product Overview” – Important information about the MIC9130 Power Over Ethernet Reference Design.
• Chapter 2. “Installation and Operation” – Includes instructions on installing and starting the MIC9130 Power Over Ethernet Reference Design.
• Appendix A. “Schematic and Layouts” – Shows the schematic and layout diagrams for the MIC9130 Power Over Ethernet Reference Design.
• Appendix B. "Bill of Materials (BOM)" – Lists the parts used to build the MIC9130 Power Over Ethernet Reference Design.
• Appendix C. "Plots and Waveforms" – Shows the MIC9130 Power Over Ethernet Reference Design waveforms and typical measurements.

CONVENTIONS USED IN THIS GUIDE

This manual uses the following documentation conventions:

DOCUMENTATION CONVENTIONS

Description Represents Examples
Arial font:
Italic characters Referenced books	oks MPLAB	^ IDE User's Guide
	Emphasized text ...is the only compiler...
Initial caps A window the Output	window
	A dialog the Settings dialog
	A menu selection select Enable Programmer
Quotes A field name in a window or dialog		"Save project before build"
Underlined, italic text with right angle bracket	A menu path File>Save	——
Bold characters A dialog button	Click OK
	A tab	Click the Power tab
N'Rnnnn	A number in verilog format, where N is the total number of digits, R is the radix and n is a digit.	4'b0010, 2'hF1
Text in angle brackets <>	A key on the keyboard	Press,,
Courier New font:
Plain Courier New	Sample source code	#define START
	Filenames	autoexec.bat
	File paths	c:\mccl8\h
	Keywords	_asm, _endasm, static
	Command-line options	-0pa+, -0pa-
	Bit values	0, 1
	Constants	0xFF, 'A'
Italic Courier New	A variable argument	file.o, where file can be any valid filename
Square brackets []	Optional arguments	mccl8 [options] file [options]
Curly brackets and pipe character: { | }	Choice of mutually exclusive arguments; an OR selection	errorlevel {0|1}
Ellipses... Replaces repeated text	var_name [,	var_name...]
	Represents code supplied by user	void main (void){ ...}

RECOMMENDED READING

This user's guide describes how to use the MIC9130 Power Over Ethernet Reference Design. Another useful document is listed below. The following Microchip document is available and recommended as a supplemental reference resource:

- MIC9130 Data Sheet – “High-Voltage, High-Speed Telecom DC/DC Controller” (DS20000000)

Microchip provides online support via our web site at www.microchip.com. This web site is used as a means to make files and information easily available to customers. Accessible by using your favorite Internet browser, the web site contains the following information:

• Product Support – Data sheets and errata, application notes and sample programs, design resources, user's guides and hardware support documents, latest software releases and archived software
• General Technical Support – Frequently Asked Questions (FAQs), technical support requests, online discussion groups, Microchip consultant program member listing
• Business of Microchip – Product selector and ordering guides, latest Microchip press releases, listing of seminars and events, listings of Microchip sales offices, distributors and factory representatives

CUSTOMER SUPPORT

Users of Microchip products can receive assistance through several channels:

• Distributor or Representative
- Local Sales Office
• Field Application Engineer (FAE)
- Technical Support

Customers should contact their distributor, representative or field application engineer (FAE) for support. Local sales offices are also available to help customers. A listing of sales offices and locations is included in the back of this document.

Technical support is available through the web site at:

http://www.microchip.com/support.

DOCUMENT REVISION HISTORY

Revision A (March 2018)

- Initial Release of this Document.

NOTES:

Chapter 1. Product Overview

1.1 INTRODUCTION

This chapter provides an overview of the MIC9130 Power Over Ethernet Reference Design and covers the following topics:

• MIC9130 Short Overview
• MIC9130 Key Features
• What Is the MIC9130 Power Over Ethernet Reference Design?
• What Does the MIC9130 Power Over Ethernet Reference Design Kit Include?

1.2 MIC9130 SHORT OVERVIEW

The MIC9130 is a current-mode PWM controller that efficiently converts -48V telecom voltages to logic levels. The MIC9130 features a high-voltage start-up circuit that allows the device to be connected to input voltages as high as 180V. The high input voltage capability protects the MIC9130 from line transients that are common in telecom systems. The start-up circuitry also saves valuable board space and simplifies designs by integrating several external components.

The MIC9130 is capable of high-speed operation. Typically the MIC9130 can control a sub-25ns pulse width on the gate out pin. Its internal oscillator can operate over 2.5 MHz, with even higher frequencies available through synchronization. The high-speed operation of the MIC9130 is made safe by the very fast, 34 ns response from current sense to output, minimizing power dissipation in a fault condition.

The MIC9130 allows for the designs of high-efficiency power supplies. It can achieve efficiencies of more than 90% at high-output currents. Its low 1.3 mA quiescent current allows high efficiency even at light loads.

The MIC9130 has a maximum duty cycle of 50%. For designs requiring a high duty cycle, refer to the MIC9131 data sheet. The MIC9130 is available in 16-pin SOP and QSOP package options. The rated junction temperature range is from -40^ to +125^ .

1.3 MIC9130 KEY FEATURES

• Input voltage up to 180V
• Internal oscillator capable of >2.5 MHz operation
  • Synchronization capability to 4 MHz
• Current sense delay of 34 ns
  • Minimum pulse width < 25 ns
• 90% efficiency
  • 1.3 mA quiescent current
  • 1.0 μA shutdown current
• Soft - start
• Resistor programmable current sense threshold

• Selectable soft-start retry
  • 4Ω sink, 12Ω source output driver

• Programmable undervoltage lockout

• Constant-frequency PWM current-mode control
  • 16-pin SOIC and 16-pin QSOP packages

FIGURE 1-1: MIC9130 Typical Application Circuit.

1.4 WHAT IS THE MIC9130 POWER OVER ETHERNET REFERENCE DESIGN?

The MIC9130 Power over Ethernet, PoE, Powered Device (PD) Reference Design is designed to offer a complete IEEE802.3at PoE Plus compliant power solution.

The board includes an integrated solution (NCP1093), PoE signature and classification circuit, an EMI filter, and an isolated FLYBACK DC/DC converter using the MIC9130 controller. The MIC9130 is a high-speed current-mode PWM controller that features a high-voltage start-up circuit that enables the device to operate directly from 36V to 57V Power Sourcing Equipment (PSE) source voltage.

When a powered Ethernet cable is plugged into the board, the front-end handshaking circuit will apply the correct signature and classification impedances to accept power from the PSE. At the application of the power from the PSE, with input voltages between 36V and 57V, the DC/DC FLYBACK converter will engage and generate a 18.3V output with up to 1.7A of output current.

This board is for use with IEEE802.3at PoE Plus enabled Switch/Routers which provide power to the Ethernet cable as defined in IEEE802.3at PoE Plus PSE requirements.

MIC9130 POE+ 25W EVALUATION BOARD Rev D ADM00844 T1 CHINA POE+ ETH MAGNETICS CCI 1002 VIN L1 C11 SP2 BR1 GND_2 T2 C1 R1 O1 C3 m² J2 C9 GND_1 R2 Z15 C2 D3 + - R3 R24 D4 + - C7 R5 R26 R25 R10 AT R6 C9 C10 R19 C17 R12 R13 R9 C16 R17 C22 GND_1 C13 R18 RS R16 POE300F-XXX Coilcraft XXXX Y TP11 VOUT* MICROCHIP CE

FIGURE 1-2: ADM00844 3D View.

C9130 POE+ 28M EVALUATION BOARD ADP ETHI-230L Coilcraft 1601D POE300F-19L Coilcraft 1541 J C9 R2 C2 D3 D1 C3 C4 C7 R24 D4 G10 R26 R25 R10 AT R6 R12 R13 R9 C18 C20 C6 C22 C17 C21 U3 R15 R23 C14 R11 C22 C16 C6 R17 C20 C6 R18 R9 R16 MICROCHIP e CE

FIGURE 1-3: ADM00844 Board.

82mm 93.5mm RJ-45 ETH1- 230 RJ-45 PD CONTROLLER FLYBACK CONVERTER MICROCHIP

FIGURE 1-4: Top View: ADM00844 Layout and Dimensions.

1.5 WHAT DOES THE MIC9130 POWER OVER ETHERNET REFERENCE DESIGN KIT INCLUDE?

The MIC9130 Power Over Ethernet Reference Design kit includes the following items:

• MIC9130 Power Over Ethernet Reference Design (ADM00844)
  • Important Information Sheet

Chapter 2. Installation and Operation

2.1 INTRODUCTION

Explanations are provided for board setup with PSE and discrete setup. The MIC9130 Power Over Ethernet Reference Design kit set is fully tested to evaluate and demonstrate a complete IEEE802.3at PoE Plus compliant power solution and the MIC9130 controller.

2.2 BOARD FEATURES

The MIC9130 Power Over Ethernet Reference Design (ADM00844), has the following features:

• Input voltage: 36V to 57V input voltage
  • 18.3V output voltage
  • Output capability: up to 1.7A
  • RJ45 input and output connectors
• NCP1093 a PoE-PD IC that fully supports IEEE 802.3af/at specifications and includes a hot swap switch control and current limit block
• EMI filter
• Low cost single winding transformer
  • MIC9130 DC/DC flyback converter
  • > 3750VAC isolation
  • 400 kHz fixed frequency PWM control
  • Efficiency: over 90%
  • Maximum output power: 30W

2.3 HOW DOES THE MIC9130 POWER OVER ETHERNET WORK?

When the RJ45 connector is plugged into a PSE, the front-end handshaking circuit applies the correct signature and classification impedances to gain power from the power source.

At the application of the power, the FLYBACK primary circuit is applied with 36V to 57V. This then converts power to the secondary circuit at 18.3V up to 1.7A.

For detailed explanation on DC/DC converter operation, refer to the MIC9130 data sheet.

2.4 SETUP AND TESTING THE BOARD PROCEDURE

2.4.1 Board Setup with PSE

Follow these steps to set up the board with available 802.3af compliant PSE:

1. Plug-in a IEEE 802.3af compliant powered Ethernet cable into RJ45_1 I input connector.
2. After the automatic handshake sequence, 18.3V are applied to post PL1.
3. Data from the input is available at output connector RJ45_2.

2.4.2 Board Discrete Setup

Follow these steps to set up the board discretely to emulate 802.3af power sourcing equipment:

1. Plug-in one end of CAT5 Ethernet cable into RJ45_1 connector, with the wires of the other end exposed.

2. Connect banana plug termination to brown, blue, orange, and green pairs.

3. Prepare test gear:

a) One Power Supply Unit PSU capable of supplying 60V with a 1A current limit.
b) Two Digital Volt Meters (DVMs) with 60V measuring capability
c) Two Ampere meters: 300 μA to 400 mA range (input side), and 2.5A rated for output side.
d) One Electronic Load, 18.3V capable set to 2A.

1. Apply test setup.

2. Turn ON all measurement devices.

3. Check Signature:

a) Set PSU to 9V.

b) Ammeter 1 should read between 280 μA to 368 mA (Class4).

1. Check Classification:

a) Set PSU to: 14.5V to 20.5V range.
b) Ammeter 1 should read between 36 mA to 44 mA (Class4).

1. DC/DC Power Supply Turn On and Start-up:

a) Set PSU to: 36V to 57V range.
b) DMV2 at the PL1 post should read 18.3V ± 1%.
c) Ammeter 2 should read between 1.7A ± 1% .

PSU Ammeter1 DVM1 Microchip DVM2 Ammeter2 Electronic Load

FIGURE 2-1: Connection Diagram.

2.5 POWERED DEVICE (PD) CONTROLLER CIRCUIT

The integrated PD interface supports the IEE 802.3af defined operating modes:

• Detection signature
- Current source classification
- Inrush current limits
- Operating current limits

2.5.1 Detection Signature

During the detection phase, the incremental equivalent resistance seen by PSE through the cable must be in the IEEE 802.3at standard specification range (23.70 kΩ to 26.30 kΩ) for a PSE voltage from 2.7V to 10.1V. In order to compensate for the nonlinear effect of the diode bridge and satisfy the specification at low PSE voltage, the NCP1093 presents a suitable impedance in parallel with 24.9 kΩ R _DET (R8) external resistor. During the detection phase, the DET pin is pulled to ground and goes in High Impedance mode (open-drain) once the device exits this mode, thus reducing the current consumption on the cable.

2.5.2 Classification

Once the PSE device has detected the PD device, the classification process begins. In classification, the PD regulates a constant current source that is set by the external resistor R_CLASS (R13) value on the CLASS pin.

The current source is defined as:

EQUATION 2-1:

I_CLASS = 9.8VR/CLASS

Table 2-1 shows how to configure the MIC9130 Power Over Ethernet classification circuit to set a Classification Level.

TABLE 2-1: CLASSIFICATION CIRCUIT CONFIGURATION

Class	Input CurrentVIN = 15.4V to 20.5 V	PD Power Class Component Modification
Class 0 0 mA - 4 mA	0.5W to 12.95W R13 = 4k9
Class 1	9 mA - 12 mA	0.5W to 3.8W
Class 2	7 mA - 20 mA	3.8W to 6.5W
Class 3 26 mA - 30 mA	6.5W to 12 mA	95W R13 = 350
Class 4	36 mA - 44 mA	Not defined

2.5.3 Front End Analog Handshaking Limits

Table 2-2 shows the designed limits of the board.

TABLE 2-2: ADM00844 LIMITS

Description	Test Condition	Min.	Max.
Signature Test (Resistance)	V_IN = 2.7V to 10.1V	23.7 kΩ	26.3 kΩ
Classification Test, Class 4 (Line Current)	V_IN = 14.5V to 20.5V	36 mA	44 mA
DC/DC Full Power (Line Current)	V_IN = 36V to 57V; I_OUT = 1.7A V_OUT = 18.3V	627 mA	994 mA

2.5.4 Power Mode

When the classification handshake is completed, the PSE and PD device move into Operating mode.

Appendix A. Schematic and Layouts

A.1 INTRODUCTION

This appendix contains the following schematics and layouts for the MIC9130 Power Over Ethernet Reference Design:

• Board – Schematic
• Board – Top Silk Layer
• Board – Top Copper and Silk Layer
• Board – Top Copper Layer
• Board – Bottom Copper Layer
• Board – Bottom Copper and Silk Layer
• Board – Bottom Silk Layer

DS50002731A-page 18 © 2018 Microchip Technology Inc.
A.2 BOARD - SCHEMATIC

CON1 X RS RAX SHELLI MOD 4/8/2-5 Vcc 1 J2 GND 2 GND 122F2 Vcc 1 D25 Vcc 100% U1 NCP1093 C19 1.5V 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% AC C16 3.5V 30V 3.5V 3.5V 3.5V 3.5V 3.5V 3.5V 3.5V 3.5V 3.5V 3.5V 3.5V 3.5V 3.5V 3.5V 3.5V 3.5V 3.5V 3.5V 3.5V 3.5V 3.7V 3.7V 3.7V 3.7V 3.7V 3.7V 3.7V 3.7V 3.7V 3.7V 3.7V 3.7V 3.7V 3.7V 3.7V 3.7V 3.7V 3.7V 3.7V 3.7V 3.8V 3.8V 3.8V 3.8V 3.8V 3.8V 3.8V 3.8V 3.8V 3.8V 3.8V 3.8V 3.8V 3.8V 3.8V 3.8V 3.8V 3.8V 3.8V 3.8V 3.9V 3.9V 3.9V 3.9V 3.9V 3.9V 3.9V 3.9V 3.9V 3.9V 3.9V 3.9V 3.9V 3.9V 4.0V 4.0V 4.0V 4.0V 4.0V 4.0V 4.0V 4.0V 4.0V 4.0V 4.0V 4.0V 4.0V 4.0V 4.0V 4.0V 4.0V 4.0V 4.0V 4.1V 4.1V 4.1V 4.1V 4.1V 4.1V 4.1V 4.1V 4.1V 4.1V 4.1V 4.1V 4.1V 4.1V 4.2V 4.2V 4.2V 4.2V 4.2V 4.2V 4.2V 4.2V 4.2V 4.2V 4.2V 4.2V 4.2V 4.2V 4.2V 4.2V

MIC9130 Power Over Ethernet IEE802.3at Poe Plus PD Reference Design

A.3 BOARD - TOP SILK LAYER

MIC9130 POE+ 25W EVALUATION BOARD Rev 0 CON1 ADM00844 T1 CON2 BR2 BR1 VIN L1 C11 GND_2 T2 C1 R1 D1 J2 C3 + C9 GND_1 R2 C2 D3 R3 D4 Gate C7 R5 R10JR10CR10 AT R6 R14 C8 C18 R15 C12 R7 C15 R19 Gnd_2 U2 C19 R12 R13 R8 C20 C22 R17 GND_1 C13 R18 R9 R16 TP12 GND C4 C5 J1 TP11 UOUT+ MICROCHIP CE

A.4 BOARD – TOP COPPER AND SILK LAYER

MIC9130 POE+ 25W EVALUATION BOARD Rev 0 ADMO0844 T1 CON1 BR2 BR1 VIN L1 C11 GND_2 J2 C9 R2 C2 GND_1 D3 R3 R3 D4 Gate D5 R101R100R10 AT R14 C8 C18 R7 C15 C12 C19 Gnd_2 U2 C20 R12 R13 R8 C16 R17 C22 GND_1 C13 R18 R9 R16 C1 R1 D1 C3 GND TP12 C4 C5 J1 TP11 VOUT+ MICROCHIP CE

A.5 BOARD - TOP COPPER LAYER

Pure electrical circuit lines without any symbols

A.6 BOARD - BOTTOM COPPER LAYER

Pure electrical circuit lines without any symbols

A.7 BOARD - BOTTOM COPPER AND SILK LAYER

JABE1 J

A.8 BOARD - BOTTOM SILK LAYER

04-10678 JJ38AJ

Appendix B. Bill of Materials (BOM)

TABLE B-1: BILL OF MATERIALS (BOM) FOR MIC9130 POWER OVER ETHERNET REFERENCE DESIGN (ADM00844) ^(1)

Qty.	Reference Description Manufacturer Part Number
2 BR	1, BR2 Bridge	rectifier, single phase standard 100V, surface mount DF-S	Diodes Incorporated®	DF1501S-T
1 C1	Capacitor ceramic 10 μF, ±10%, 6.3V, X5R, 1206, (3216 Metric)		Yageo Corporation CC	1206KKX5R5BB106
1 C2	Capacitor ceramic 0.1 μF, 100V, 10%, X7R, SMD, 1206		Yageo Corporation CC	1206KKX7R0BB104
1 C3	Aluminum polymer capacitor radial, 82 μF, 35V, Can-SMD, 20 mΩ, 5000 Hours at 105°C		Panasonic® - ECG 35	SVPF82M
2 C4	C5 Capacitor ceramic 22 μF, 35V, 20%, JB, SMD, 0805		TDK Corporation C201	2JB1V226M125AC
1 C6	Aluminum electrolytic capacitors 47 μF, 35V, Radial, Can - SMD, 1000 Hours at 105°C		Nichicon Corporation	UWT1V470MCL1GS
5 C7	C8, C15, C18, C19	Capacitor ceramic 0.1 μF, 50V, 10%, X7R, SMD, 0805	Yageo Corporation CC	0805KRX7R9BB104
1 C9	Capacitor aluminum 100 μF, 100V, 20%, SMD, J21		Nichicon Corporation	UCD2A101MNQ1MS
1 C11	Capacitor ceramic 1 μF, 100V, 20%, X7R, SMD, 1210		TDK Corporation C322	25X7R2A105M200AA
1 C12	Capacitor ceramic 0.1 μF, 100V, 10%, X7R, SMD, 1210		KEMET	C1210C104K1RACTU
1	C13	Capacitor ceramic 10 μF, ±10%, 16V, X7R, 1206, (3216 Metric)	Yageo Corporation CC	1206KKX7R7BB106
1 C14	Capacitor ceramic 0.027 μF, 50V, 10%, X7R, SMD, 0805		Yageo Corporation CC	0805KRX7R9BB273
1 C16	Capacitor ceramic 330 pF, 50V, 10%, X7R, SMD, 0805		Yageo Corporation CC	0805KRX7R9BB331
1 C17	Capacitor ceramic 0.056 μF, 50V, 10%, X7R, SMD, 0805		KEMET	C0805C563K5RACTU
1 C20	Capacitor ceramic 220 pF, 50V, C0G/NPO, 0805		Yageo Corporation CC	0805JRNPO9BN221
1 C21	Capacitor ceramic 39 pF, 50V, 10%, C0G, SMD, 0805		KEMET	C1210C104K1RACTU
1 C22	Capacitor ceramic 2.2 μF, 100V, 10%, X7S, SMD, 1206		TDK Corporation C321	6X7S2A225K160AB
2	CON1, CON2	Jack modular connector, 8p8c (RJ45, Ethernet), 90°Angle (Right) Shielded, Cat3	Molex®	956223981
1 D1	Diode schottky, B560C, 5A, 60V, SMD, DO-214AB_SMC		Diodes Incorporated®	B560C-13-F
Qty.	Reference	Description	Manufacturer	Part Number
1 D3	Diode standard, 100V, 1A, surface mount, SMA		Diodes Incorporated®	RS1B-13-F
1 D4	Diode standard, 250V, 200 mA (DC), surface mount, SOD-232		ON Semiconductor®	BAS21AHT1G
1 D5	Diode zener, 12V, 200MW, SOD323 ON Semiconductor		®	MM3Z12VST1G
1 D6	Diode schottky, BAT54H, 30V, 0.2A, SMD, SOD-323		ON Semiconductor®	NSVBAT54HT1G
2 J1,	J2 2 position wire-to-board terminal block, horizontal with board, 5.08 mm, through hole		On-Shore Technology, Inc.	OSTVI022152
1 L1	Inductor Hi SRF, Shlded, 10 uH, 1.7A, 10%, SMD 1812		Coilcraft 1812PS-103KLB
1 PCB	MIC9130 Power Over Ethernet Reference Design Printed Circuit Board		Microchip Technology Inc.	04-10678
1 Q1	Bipolar transistors, BJT SS SOT23, GP, XSTR, NPN, 30V		ON Semiconductor®	MMBT2222ALT3G
1 Q2	N-Channel, 150V, 33A (Tc), 74W (Tc), surface mount, PG-TDSON-8		Infineon Technologies AG	BSC360N15NS3GATMA1
1 R1	Resistor, TKF, 100k, 1%, 1/4W, SMD, 1206 Panasonic		® - ECG ER	J-8ENF1003V
1 R2	Resistor, TKF, 5.1k, 1%, 1W, SMD, 2512 Panasonic		® - ECG ER	J1TNF5101U
1 R3	Resistor, TKF, 1.2R, 1%, 1/8W, SMD, 0805 Panasonic		® - ECG ER	J-6RQF1R2V
1 R4	Resistor, TKF, 4.75K, 1%, 1/8W, SMD, 0805 Panasonic		® - ECG ER	J-6ENF4751V
1	R5	Resistor, TKF, 2.67k, 1%, 1/8W, SMD, 0805	Yageo Corporation	RC0805FR-072K67L
1 R6	Resistor, TKF, 0.33R, 1%, 1W, SMD, 2512 Vishay/Dale WSL		2512R3300FEA
1 R7	Resistor, TKF, 243k, 1%, 1/8W, SMD, 0805 Yageo Corporation on RC0805FR-07243KL
1 R8	Resistor, TF, 24.9k, 1%, 1/4W, SMD, 0805 Stackpole		Electronics, Inc,	RNCP0805FTD24K9
2	R9, R20	Resistor, TKF, 30.1k, 1%, 1/8W, SMD, 0805	Yageo Corporation	RC0805FR-0730K1L
3	R10, R14, R24	Resistor, TKF, 10k, 1%, 1/8W, SMD, 0805	Panasonic® - ECG ER	J-6ENF1002V
1	R11	Resistor, TKF, 1.15K, 1%, 0.25W, SMD, 1206	Yageo Corporation	RC1206FR-071K15L
2 R12, R16	Resistor, TKF, 169k, 1%, 1/8W, SMD, 0805 Panasonic		® - ECG ER	J-6ENF1693V
1	R13	Resistor, TKF, 255R, 1%, 1/8W, SMD, 0805	Yageo Corporation	RC0805FR-07255RL
1 R15	Resistor, TKF, 100k, 1/8W, 1%, SMD, 0805 Panasonic		® - ECG ER	J-6ENF1003V
2 R17, R26	Resistor, TKF, 0R, 1/8W, SMD, 0805 Panasonic		® - ECG ER	J-6GEY0R00V
1 R18	Resistor, TKF, 422k, 1%, 1/8W, SMD, 0805 Panasonic		® - ECG ER	J-6ENF4223V
1	R19	Resistor, SMD, 5.1 kΩ, 1%, 1/8W, 0805	TE Connectivity, Ltd.	CRG0805F5K1
1	R21	Resistor, TKF, 21.5k, 1%, 1/8W, SMD, 0805	Yageo Corporation	RC0805FR-0721K5L
1	R22	Resistor, TKF, 806R, 1%, 1/8W, SMD, 0805	Yageo Corporation	RC0805FR-07806RL
1	R23	Resistor, TKF, 15.8k, 1%, 1/8W, SMD, 0805	Yageo Corporation	RC0805FR-0715K8L
1	R25	Resistor, TKF, 64.9k, 1%, 1/8W, SMD, 0805	Vishay/Dale	CRCW080564K9FKEA
1 T1	Signal transformer ETH1, 30W, 2 pairs PoE plus magnetic module, SMD		Coilcraft ETH1-230L
1 T2Qty.	Flyback transformer, 1:0.56, 1:0.33, 36V-72V, SMDReference Description Manufacturer Part Number		Coilcraft POE300F-19L
1 U1	Power over Ethernet controller, 1-Channel, 802.3at (PoE+), 802.3af (PoE) 10-DFN (3 x 3)		ON Semiconductor®	NCP1093MNRG
1 U2	MCHP ANALOG PWM CONTROLLER, 2.5 MHz, MIC9130YQS, QSOP-16		Microchip Technology Inc.	MIC9130YQS
1 U3	IC POWER, ATL432AQDBZR, Shunt Voltage Reference, SOT-23-3		Texas Instruments ATL432AQDBZR
1 U4	IC PHOTO HCPL-181 4-SMD Avago Technologies HCPL-18		1-00CE

Note 1: The components listed in this Bill of Materials are representative of the PCB assembly. The released BOM used in manufacturing uses all RoHS-compliant components.

NOTES:

Appendix C. Plots and Waveforms

C.1 FLYBACK CONVERTER PERFORMANCE

V_IN = 36V to 57V .

Efficiency 85% at full load.

V_(OUT RIPPLE) < 150 mV.

Load Regulation = 0.1% at V_IN = 48V.

C.2 BOARD SET TYPICAL WAVEFORMS

FIGURE C-1: V OUT Ripple.

FIGURE C-2: Switching Edges, Q2 Gate and Drain Voltage.

FIGURE C-3: Switching Edges, Q2 Gate and Drain Voltage.

FIGURE C-4: Switching Edges, Q2 Gate and Drain Voltage.

FIGURE C-5: Switching Edges, Q2 Gate and Drain Voltage.

C.2.1 Bode Plot

Resistive Load 12.8Ω, 1.4A, P_OUT = 25 W

FIGURE C-6: Gain Magnitude and Gain Phase vs. Frequency for 48V Input. Gain Margin, GM = 14.9 dB, Phase Margin, PM = 69.6°.

FIGURE C-7: Gain Magnitude and Gain Phase vs. Frequency for 60V Input. Gain Margin, GM = 15.5 dB, Phase Margin, PM = 67.5°.

C.3 BOARD SET TYPICAL MEASUREMENTS

FIGURE C-8: Line Regulation - Output Voltage vs. Input Voltage.

FIGURE C-9: Load Regulation - Output Voltage vs. Output Current.

FIGURE C-10: Output Voltage Accuracy - V OUT Accuracy vs. Output Current.

FIGURE C-11: Efficiency vs. Load Current at Different Input Voltages.

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