MIC28514 - Carte d'évaluation Microchip - Free user manual and instructions

USER MANUAL MIC28514 Microchip

Note the following details of the code protection feature on Microchip devices:

• Microchip products meet the specification contained in their particular Microchip Data Sheet.
- Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the intended manner and under normal conditions.
- There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip's Data Sheets. Most likely, the person doing so is engaged in theft of intellectual property.
• Microchip is willing to work with the customer who is concerned about the integrity of their code.
- Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not mean that we are guaranteeing the product as "unbreakable."

Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our products. Attempts to break Microchip's code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.

Information contained in this publication regarding device applications and the like is provided only for your convenience and may be superseded by updates. It is your responsibility to ensure that your application meets with your specifications. MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHER EXPRESS OR IMPLIED, WRITTEN OR ORAL, STATUTORY OR OTHERWISE, RELATED TO THE INFORMATION, INCLUDING BUT NOT LIMITED TO ITS CONDITION, QUALITY, PERFORMANCE, MERCHANTABILITY OR FITNESS FOR PURPOSE. Microchip disclaims all liability arising from this information and its use. Use of Microchip devices in life support and/or safety applications is entirely at the buyer's risk, and the buyer agrees to defend, indemnify and hold harmless Microchip from any and all damages, claims, suits, or expenses resulting from such use. No licenses are conveyed, implicitly or otherwise, under any Microchip intellectual property rights unless otherwise stated.

Microchip received ISO/TS-16949:2009 certification for its worldwide headquarters, design and wafer fabrication facilities in Chandler and Tempe, Arizona; Gresham, Oregon and design centers in California and India. The Company's quality system processes and procedures are for its PIC® MCUs and dsPIC® DSCs, KEELOQ® code hopping devices, Serial EEPROMs, microperipherals, nonvolatile memory and analog products. In addition, Microchip's quality system for the design and manufacture of development systems is ISO 9001:2000 certified.

QUALITY MANAGEMENT SYSTEM CERTIFIED BY DNV = ISO/TS 16949=

Trademarks

The Microchip name and logo, the Microchip logo, AnyRate, AVR, AVR logo, AVR Freaks, BeaconThings, BitCloud, CryptoMemory, CryptoRF, dsPIC, FlashFlex, flexPWR, Heldo, JukeBlox, KEELOQ, KEELOQ logo, Kleer, LANCheck, LINK MD, maXStylus, maXTouch, MediaLB, megaAVR, MOST, MOST logo, MPLAB, OptoLyzer, PIC, picoPower, PICSTART, PIC32 logo, Prochip Designer, QTouch, RightTouch, SAM-BA, SpyNIC, SST, SST Logo, SuperFlash, tinyAVR, UNI/O, and XMEGA are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries.

ClockWorks, The Embedded Control Solutions Company, EtherSynch, Hyper Speed Control, HyperLight Load, IntelliMOS, mTouch, Precision Edge, and Quiet-Wire are registered trademarks of Microchip Technology Incorporated in the U.S.A. Adjacent Key Suppression, AKS, Analog-for-the-Digital Age, Any Capacitor, AnyIn, AnyOut, BodyCom, chipKIT, chipKIT logo, CodeGuard, CryptoAuthentication, CryptoCompanion, CryptoController, dsPICDEM, dsPICDEM.net, Dynamic Average Matching, DAM, ECAN, EtherGREEN, In-Circuit Serial Programming, ICSP, Inter-Chip Connectivity, JitterBlocker, KleerNet, KleerNet logo, Mindi, MiWi, motorBench, MPASM, MPF, MPLAB Certified logo, MPLIB, MPLINK, MultiTRAK, NetDetach, Omniscient Code Generation, PICDEM, PICDEM.net, PICkit, PICtail, PureSilicon, QMatrix, RightTouch logo, REAL ICE, Ripple Blocker, SAM-ICE, Serial Quad I/O, SMART-I.S., SQI, SuperSwitcher, SuperSwitcher II, Total Endurance, TSHARC, USBCheck, VariSense, ViewSpan, WiperLock, Wireless DNA, and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries.

SQTP is a service mark of Microchip Technology Incorporated in the U.S.A.

Silicon Storage Technology is a registered trademark of Microchip Technology Inc. in other countries.

GestIC is a registered trademark of Microchip Technology Germany II GmbH & Co. KG, a subsidiary of Microchip Technology Inc., in other countries.

All other trademarks mentioned herein are property of their respective companies.

© 2017, Microchip Technology Incorporated, All Rights Reserved. ISBN: 978-1-5224-1724-8

Object of Declaration: MIC28514 Evaluation Board User's Guide

EU Declaration of Conformity

This declaration of conformity is issued by the manufacturer.

The development/evaluation tool is designed to be used for research and development in a laboratory environment. This development/evaluation tool is not a Finished Appliance, nor is it intended for incorporation into Finished Appliances that are made commercially available as single functional units to end users under EU EMC Directive 2004/108/EC and as supported by the European Commission's Guide for the EMC Directive 2004/108/EC (8th February 2010).

This development/evaluation tool complies with EU RoHS2 Directive 2011/65/EU.

This development/evaluation tool, when incorporating wireless and radio-telecom functionality, is in compliance with the essential requirement and other relevant provisions of the R&TTE Directive 1999/5/EC and the FCC rules as stated in the declaration of conformity provided in the module datasheet and the module product page available at www.microchip.com.

For information regarding the exclusive, limited warranties applicable to Microchip products, please see Microchip's standard terms and conditions of sale, which are printed on our sales documentation and available at www.microchip.com.

Signed for and on behalf of Microchip Technology Inc. at Chandler, Arizona, USA.

Rodger D. Hillep

Rodger Richey

Director of Development Tools

4/4/17

Date

NOTES:

Table of Contents

Preface 7

Introduction....7

Document Layout 7

Conventions Used in this Guide 8

Recommended Reading....9

The Microchip Web Site 9

Customer Support 9

Document Revision History 9

Chapter 1. Product Overview

1.1 Introduction ...... 11

1.2 MIC28514 Evaluation Board Overview 11

1.3 MIC28514 Evaluation Board Features 12

1.4 What the MIC28514 Evaluation Board Kit Contains 12

Chapter 2. Installation and Operation

2.1 System and Configuration Requirements .... 13

2.2 Board Setup 13

2.3 Circuit Description 14

2.3.1 Feedback Resistors 14

2.3.2 SW Node 15

2.3.3 Current Limit 15

2.3.4 Loop Gain Measurement 15

2.3.5 Setting the Switching Frequency 15

2.3.6 Setting the Soft Start Time 16

2.3.7 Auxiliary Bootstrap LDO (EXTVDD) 16

Appendix A. Schematic and Layouts

A.1 Introduction 17

A.2 Board – Schematic 18

A.3 Board – Top Silk 19

A.4 Board – Top Copper and Silk 19

A.5 Board – Top Copper 20

A.6 Board - MID Copper Layer 1 20

A.7 Board – Mid Copper Layer 2 ...... 21

A.8 Board – Bottom Copper 21

A.9 Board – Bottom Copper and Silk 22

Appendix B. Bill of Materials (BOM)......23

Worldwide Sales and Service 26

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 web site (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 MIC28514 Evaluation Board. Items discussed in this chapter include:

• Document Layout
  • Conventions Used in this Guide
  • Recommended Reading
  • The Microchip Website
• Customer Support
  • Document Revision History

DOCUMENT LAYOUT

This document describes how to use the MIC28514 Evaluation Board as a development tool to emulate and debug firmware on a target board. The manual layout is as follows:

• Chapter 1. "Product Overview" – Important information about the MIC28514 Evaluation Board.
• Chapter 2. "Installation and Operation" – Includes instructions on installing and starting the MIC28514 Evaluation Board.
• Appendix A. "Schematic and Layouts" – Shows the schematic and layout diagrams for the MIC28514 Evaluation Board.
• Appendix B. "Bill of Materials (BOM)" – Lists the parts used to build the MIC28514 Evaluation Board.

CONVENTIONS USED IN THIS GUIDE

This manual uses the following documentation conventions:

DOCUMENTATION CONVENTIONS

Description Represents Examples
Arial font:
Italic characters Referenced books	mPLAB	^ IDE User's Guide
	Emphasized text ...is the only compiler...
Initial caps A window the Output	ut 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	-Opa+, -Opa-
	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 MIC28514 Evaluation Board. Another useful document is listed below. The following Microchip document is available and recommended as a supplemental reference resource:

- MIC28514 Data Sheet – “75V/5A Hyper Speed Control® Synchronous DC/DC Buck Regulator with External Soft Start” (DS20005693)

THE MICROCHIP WEBSITE

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

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

DOCUMENT REVISION HISTORY

Revision B (May 2017)

- Updated Figure 2-1.

Revision A (February 2017)

- Initial Release of this Document.

NOTES:

Chapter 1. Product Overview

1.1 INTRODUCTION

This chapter provides an overview of the MIC28514 Evaluation Board and covers the following topics:

• MIC28514 Evaluation Board Overview
• MIC28514 Evaluation Board Features
• What the MIC28514 Evaluation Board Kit Contains

1.2 MIC28514 EVALUATION BOARD OVERVIEW

The MIC28514 Evaluation Board is a constant frequency, synchronous buck controller featuring a unique adaptive on-time control architecture. The MIC28514 operates over an input supply range of 4.5V to 75V. The output voltage is adjustable down to 0.6V with an ensured accuracy of ±1%. The device operates with a programmable switching frequency from 270 kHz to 800 kHz.

J4 VOUT EXTVDD SW GND EN GND J3 UOUT J1 J2 J5 PUIN L1 R17 C822 C16 C17 C20 C19 C18 MIC28514 Evaluation Board + ADM00804 J12 MICROCHIP GND J13 J8 J7 J14 VDD MODE GND 0.8V 1.2V 2.5V 3.3V 5.0V 12V PG GND J6 J9 J7 C12 C13 C14 C16 C17 C18 R13 C8 R3 U1 R12 R7 R9 C21 R20 R5 C5 C2 R16 R11 R10 R8 R6 R19 R21 R9 R8 R7 R6 R5 R4 R3 R20 R10 R9 R7 R6 R5 R4 R3 R20 R10 R9 R7 R6 R5 R4 R3 R20 R10 R9 R7 R6 R5 R4 R3 R20 R10 R9 R7 R6 R5 R4 R3 R20 R10 R9 R7 R6 R5 R4 R3 R20 R10 R9 R7 R6 R5 R4 R4 R3 R20 R10 R9 R7 R6 R5 R4 R3 R20 R10 R9 R7 R6 R5 R4 R3 R20 R10 R9 R7 R6 R5 R4 R3 R20 R10 R9 R7 R6 R5 R4 R3 R20 R10 R9 R7 R6 R5 R4 R3 R20 R1

FIGURE 1-1: MIC28514 Evaluation Board.

1.3 MIC28514 EVALUATION BOARD FEATURES

The MIC28514 Evaluation Board:

• Features a Soft Start (SS) time selection pin, which allows the user to adjust the output Soft Start time to reduce inrush current from mains during start-up.
• Features six selectable output voltages: 0.8V, 1.2V, 2.5V, 3.3V, 5V and 12V.
• Features an auxiliary bootstrap Low Dropout (LDO) which improves the system efficiency by supplying the internal bias power from the output of the converter.
• Features a logic level Enable (EN) signal that can be used to enable or disable the controller.
• Can start up monotonically into a pre-biased output.
• Features an open-drain Power Good signal (PG), which signals when the output is in regulation.

The basic parameters of the evaluation board are:

• Input: 10V to 75V (optimized for 48V)
• Output: 0.8V, 1.2V, 2.5V, 3.3V, 5V or 12V Selectable through jumper J10 at 5A (default option is set to 5V)
• 300 kHz Switching Frequency (adjustable from 270 kHz to 800 kHz)

1.4 WHAT THE MIC28514 EVALUATION BOARD KIT CONTAINS

The MIC28514 Evaluation Board includes the following items:

• MIC28514 Evaluation Board (ADM00804)
- Important Information Sheet

Chapter 2. Installation and Operation

2.1 SYSTEM AND CONFIGURATION REQUIREMENTS

The MIC28514 Evaluation Board requires only a single power supply with at least 5A current capability. The MIC28514 has an internal V_DD LDO so no external linear regulator is required to power the internal biasing of the IC. In applications with V_IN < +5.5V , PV_DD should be tied to V_IN to bypass the internal linear regulator. The output load can either be a passive or an active load.

Note: The MIC28514 Evaluation Board does not have reverse polarity protection. Applying a negative voltage to the V_IN and GND terminals may damage the device. The maximum V_IN of the board is rated at 75V. Exceeding 75V on the V_IN could damage the device.

2.2 BOARD SETUP

Follow these steps prior to using the MIC28514 Evaluation Board:

1. Connect a supply to the V_IN and GND terminals, paying attention to the polarity and the supply range (10V < V_IN < 75V). Monitor I_IN with a current meter, and the input voltage at the V_IN and GND terminals with a voltmeter. Do not apply power until Step 4.
2. Connect a load to the V_OUT and GND terminals. The load can be either a passive (resistive) or an active (electronic) type. A current meter may be placed between the V_OUT terminal and load to monitor the output current. Ensure the output voltage is monitored at the V_OUT terminal.
3. Enable input. An EN connector is provided on the evaluation board for users to easily access the enable feature. Applying an external logic signal on the EN pin to pull it low, or using a jumper to short the EN pin to GND, will shut off the output of the MIC28514 Evaluation Board.
4. Turn on the V_IN supply and verify that the output voltage is regulated to the specific selected voltage.

2.3 CIRCUIT DESCRIPTION

This section describes the working principles and limitations that should be taken into account when using the MIC28514 Evaluation Board. The external components have been selected in order to optimize performance for the specific conditions of V_IN = 48V and V_OUT = 5V . Although the application will behave correctly for other output and input voltages, further optimization (fine-tuning of the inductor, output capacitors and ripple injection components) can be done in order to improve efficiency and transient response.

MIC28514 PVDD SVIN R9 C5 VIN CIN VIN up to 75V R12 BST C7 L1 SW R11 R15 R20 VOUT PG ILIM C10 C1 COUT PS FB R3 R20 R3 C10 R10 R15 R20 R3 R4 R5 R6 R18 R19 VDD VDD VDD EN EN PG SS VDD FREQ EXTVDD AGND PGND C8 R8 VIN R10 R14 C9

FIGURE 2-1: Evaluation Board Circuit Description.

2.3.1 Feedback Resistors

The output voltages available on the MIC28514 Evaluation Board are: 0.8V, 1.2V, 2.5V, 3.3V, 5V and 12V, which are selectable using jumper J10.

Voltages other than the ones already available can be set by modifying the R_bot resistors according to Equation 2-1.

EQUATION 2-1:

$$ R _ {b o t} \quad \frac {R _ {3} \times V _ {R E F}}{V _ {O U T} - V _ {R E F}} = $$

Where:

$$ V _ {R E F} = 0. 6 \mathrm{V} $$

$$ R _ {3} = 1 0 \mathrm{kOhm} $$

Note that the output voltage should not be set to exceed 15V due to the 16V voltage rating on the output capacitors.

For output voltage higher than 15V, output capacitors of a voltage rating higher than the set output voltage should be used.

2.3.2 SW Node

Test point J2 ( V_SW ) is placed for monitoring the switching waveform, one of the most critical waveforms for the converter.

2.3.3 Current Limit

The MIC28514 Evaluation Board uses the low-side MOSFET R_DS(ON) to sense inductor current. In each switching cycle of the MIC28514 converter, the inductor current is sensed by monitoring the voltage across the low-side MOSFET, during the off period of the switching cycle, during which the low-side MOSFET is on. An internal current source of 135 A generates a voltage across the external Current-Limit Resistor, R_CL .

The I_LIM Pin Voltage ( V_ILIM ) is the difference of the voltage across the low-side MOSFET and the voltage across the resistor ( V_CL ). The sensed voltage, V_ILIM , is compared with the Power Ground (PGND) after a blanking time of 150 ns.

If the absolute value of the voltage drop across the low-side MOSFET is greater than the absolute value of the voltage across the current setting resistor ( V_CL ), the MIC28514 triggers the current-limit event. Consecutive eight current-limit events trigger the Hiccup mode. The hiccup sequence, including the Soft Start, reduces the stress on the internal MOSFETs, and protects the load and supply from severe short conditions.

The short-circuit current limit can be programmed by using the formula shown in Equation 2-2.

EQUATION 2-2:

$$ R _ {I I} = \frac {(I _ {C L I M} + \varDelta I L _ {P P} \times 0 . 5) \times R _ {D S (O N)}}{I _ {C L}} $$

Where:

$$ I _ {C L I M} = \text { Desired output current limit } $$

$$ \Delta I L _ {P P} = \text { Inductor current peak - to - peak } $$

$$ R _ {D S (O N)} = \text { On resistance of low - side power MOSFET(25 m } \Omega) $$

$$ I _ {C L} = \text { Current - limit source current, the typical value is } 1 3 5 \mu \mathrm{A} $$

It is mandatory to make sure that the inductor current used to charge the output capacitance during Soft Start is under the current limit; otherwise, the supply will go into Hiccup mode and may not finish the Soft Start successfully.

The MOSFET R_DS(ON) can vary up to 30%-40% with temperature. Therefore, it is recommended to add a 30% margin to the I_CLIM in the above equation to avoid false current limiting due to an increased MOSFET junction temperature rise.

2.3.4 Loop Gain Measurement

Resistor R20 is placed in series with the regulator feedback path. The control loop gain can be measured by connecting an impedance analyzer across the resistor and selecting the resistor value between 10Ω to 50Ω.

2.3.5 Setting the Switching Frequency

The MIC28514 Evaluation Board is an adjustable frequency, synchronous buck converter featuring a unique adaptive on-time control architecture. The switching frequency can be adjusted between 270 kHz and 800 kHz by changing the resistor divider network consisting of R_7 and R_8 .

Equation 2-3 shows the estimated switching frequency:

EQUATION 2-3:

$$ f _ {S W} = f _ {0} \times \frac {R _ {8}}{R _ {7} + R _ {8}} $$

Where:

f_0 = Switching Frequency when FREQ pin is connected to the input voltage, f_0 is typically 800 kHz

The evaluation board design is optimized for a switching frequency of 300 kHz. If the switching frequency is programmed to either lower end or higher end, the design needs optimization.

2.3.6 Setting the Soft Start Time

The output voltage Soft Start time can be set by connecting a capacitor from SS to A_GND .

The value of the capacitor can be calculated using Equation 2-4:

EQUATION 2-4:

$$ C _ {3} \quad \frac {I _ {S S} \times t _ {S S}}{V _ {R E F}} = $$

Where:

C_3 = Capacitor from SS pin to A_GND

I_SS = Internal Soft Start current (1.4 A typical)

t_SS = Output Soft Start time

V_REF = Reference voltage (0.6V)

2.3.7 Auxiliary Bootstrap LDO (EXTVDD)

The MIC28514 Evaluation Board features an auxiliary bootstrap LDO which improves the system efficiency by supplying the MIC28514 internal circuit bias power from the converter output voltage. This LDO is enabled when the voltage on the EXTVDD pin is above 4.6V (typical), and at the same time, the main LDO, which operates from V_IN , is disabled to reduce power consumption. If the regulator output voltage is ≥5V and ≤12V , use the output voltage to power the MIC28514, which will increase system efficiency. The J1 jumper can be shorted to use the output voltage as EXTVDD.

Appendix A. Schematic and Layouts

A.1 INTRODUCTION

This appendix contains the following schematics and layouts for the MIC28514 Evaluation Board:

• Board – Schematic
• Board – Top Silk
  • Board – Top Copper and Silk
• Board – Top Copper
• Board – MID Copper Layer 1
• Board – Mid Copper Layer 2
• Board – Bottom Copper
  • Board – Bottom Copper and Silk

DS50002565B-page 18 © 2017 Microchip Technology Inc.
A.2 BOARD - SCHEMATIC

HDB 2.34 Vdc 1x2 SNC R10 10kV 0603 7kV GND C1 6720 μF 50V C2 2.2 μF 10V GND C4 2.2 μF 10V GND C5 1.5μF 100V GND C6 1.5μF 100V GND C7 1.5μF 100V GND C8 2.2μF 10V GND C9 2.2μF 100V GND C10 2.2μF 100V GND C11 2.2μF 100V GND C12 47μF 10V GND C13 47μF 10V GND C14 47μF 100V GND C15 330μF 25V GND C16 5.1μF 10V GND C17 5.1μF 100V GND C18 5.1μF 100V GND C19 2.2μF 100V GND C20 2.2μF 100V GND C21 39μF 100V GND C22 330μF-15 10V GND C23 330μF-15, 1x2, 1x2, 1x2, 1x2, 1x2, 1x2, 1x2, 1x2, 1x2, 1x2, 1x2, 1x2, 1x2, 1x2, 1x2, 1x2, 1x2, 1x2, 1x2, 1x2, 1x3, 1x3, 1x3, 1x3, 1x3, 1x3, 1x3, 1x3, 1x3, 1x3, 1x3, 1x3, 1x3, 1x3, 1x3, 1x3, 1x3, 1x3, 1x3, 1x3, 1x4, 1x4, 1x4, 1x4, 1x4, 1x4, 1x4, 1x4, 1x4, 1x4, 1x4, 1x4, 1x4, 1x4, 1x4, 1x4, 1x4, 1x4, 1x4, 1x4, 1x5, 1x5, 1x5, 1x5, 1x5, 1x5, 1x5, 1x5, 1x5, 1x5, 1x5, 1x5, 1x5, 1x5, 1x5, 1x5, 1x5, 1x5, 1x5, 1x6, 1x6, 1x6, 1x6, 1x6, 1x6, 1x6, 1x6, 1x6, 1x6, 1x6, 1x6, 1x6, 1x6, 1x6, 1x6, 1x6, 1x6, 1x6, 1x6, 1x7

MIC28514 Evaluation Board User's Guide

A.3 BOARD - TOP SILK

J4 VOUT EXTVDD SW GND EN GND J3 PUIN L1 R17 C17 C20 C19 C18 C16 C11 C9 R14 C7 R12 R9 R1 C21 MIC28514 Evaluation Board ADM00804 J12 + MICROCHIP GND CE R0HS GND J7 J14 VDD MODE GND 0.8V 1.2V 2.5V 3.3V 5.0V 12V PG GND J6 J9 J13 J8

A.4 BOARD – TOP COPPER AND SILK

J4 VOUT EXTVDD SW GND EN GND J3 UOUT J1 J2 J5 PUIN L1 R17 C17 C20 C19 C18 MIC28514 Evaluation Board ADM00804 J11 + C12 C13 C14 C16 C17 R16 C9 R14 R12 R7 R9 C21 MICROCHIP C15 R13 C9 C3 R3 C5 R20 C1 R2 R10 R19 C10 R8 GND GND J7 J14 UDD MODE GND 0.8V 1.2V 2.5V 3.3V 5.0V 12V PG GND J8 J6 J9

A.5 BOARD - TOP COPPER

Top-down schematic of a microchip or circuit board layout with no visible text, numbers, or symbols.

A.6 BOARD - MID COPPER LAYER 1

Abstract geometric pattern with blue dots and a white outline on a teal background (no text or symbols)

A.7 BOARD - MID COPPER LAYER 2

Abstract circuit board pattern with blue dots and white outlines, no text or symbols present

A.8 BOARD - BOTTOM COPPER

Top-down view of a printed circuit board layout with various traces and pads (no readable text or symbols)

A.9 BOARD – BOTTOM COPPER AND SILK

Top-down view of a printed circuit board with various electronic components and traces (no readable text or symbols)

Appendix B. Bill of Materials (BOM)

TABLE B-1: BILL OF MATERIALS (BOM)

Qty.	Reference	Description Manufacturer Part Number
1 C1	Capacitor	Ceramic, 4700 pF, 50V, 10%, X7R, SMD, 0603	KEMET C0603C472K5	RACTU
1 C2	Do Not Populate - Capacitor Ceramic, 10 pF, 50V, 0.5 pF, C0G, SMD, 0603		TDK Corporation C1608	C0G1H100D
1 C3	Capacitor	Ceramic, 0.010 μF, 25V, 10%, X7R, SMD, 0603	Yageo Corporation CC0	603KRX7R8BB103
2	C4, C8	Capacitor Ceramic, 2.2 μF, 16V, 10%, X5R, SMD, 0603	TDK Corporation C1608	X5R1C225K
1 C5	Capacitor	Ceramic, 1 μF, 100V, 10%, X7S, SMD, 0805	TDK Corporation C2012	X7S2A105K125AB
3 C7	C10, C17	Capacitor Ceramic, 0.1 μF, 100V, 10%, X7R, SMD, 0603	Murata Electronics North America, Inc.	GRM188R72A104KA35D
1 C9	Capacitor	Ceramic, 4.7 μF, 25V, 20%, X5R, SMD, 0805	TDK Corporation C2012	X5R1E475M125AB
1 C11	Do Not Populate - Capacitor Ceramic, 1000 pF, 50V, 20%, X7R, SMD, 0603		TDK Corporation C1608	X7R2A102K080AA
3	C12, C13, C14	Capacitor Ceramic, 47 μF, 16V, 20%, X5R, SMD, 1210	Yageo Corporation CC1	1210MKX5R7BB476
1 C15	Capacitor Aluminum, 330 μF, 25V, 20%, SMD, F		Nichicon Corporation	UWT1E331MNL1GS
1 C16	Capacitor Ceramic, 0.1 μF, 16V, 10%, X7R, SMD, 0603		AVX Corporation	0603YC104KAT2A
3	C18, C19, C20	Capacitor Ceramic, 2.2 μF, 100V, 10%, X7R, SMD, 1210	KEMET C1210C225K1	RACTU
1 C21	Capacitor Aluminum, 39 μF, 100V, 20%, RAD, P3.5D8H15		United Chemi-Con	EKZE101ELL390MH15D
9 J1, J2, J3, J4, J7, J8, J9, J11, J12		Connector Header-2.54 Male, 1x2, Gold, 5.84MH, TH, Vertical	FCI	77311-118-02LF
2 J5, J6	Connector Header-2.54 Male, 1x3, Gold, 5.84MH, TH, Vertical		FCI	68000-103HLF
1 J10	Connector Header-2.54 Male, 2x6, Gold, 5.84MH, TH, Vertical		Samtec, Inc.	TSW-106-07-G-D
2 J13, J14	Connector Jack Banana Blue Female, 4.0 mm, TH, R/A		Multicomp Inc.	24.243.5
1 L1	Inductor, 8.2 μH, 17.1A, 20%, SMD, L11.3W10H10		Coilcraft	XAL1010-822MEB
1	PCB1	Printed Circuit Board	Microchip Technology Inc.	04-10614-R1
Qty.	Reference D	Description Manufacturer Part Number
2	PV_IN , V_OUT	Connector Jack Banana Red Female, 4.0 mm, TH, R/A	Multicomp Inc. 24.243.1
Qty.	Reference	Description	Manufacturer	Part Number
1 R1	Resistor, TKF, 100k, 5%, 1/10W, SMD, 0603 Panasonic	®- ECG ERJ	-3GEYJ104V
1 R2	Resistor, TKF, 30k, 1%, 1/10W, SMD, 0603 Stackpole Electronics, Inc.		RMCF0603FT30K0
4 R3, R4, R8, R10	Resistor, TKF, 10k, 1%, 1/8W, SMD, 0603 Vishay Beyschlag MCT06030C1002FP500
1 R5	Resistor, TKF, 3.16k, 1%, 1/10W, SMD, 0603 Panasonic	®- ECG ERJ	-3EKF3161V
1 R6	Resistor, TKF, 2.2k, 1%, 1/10W, SMD, 0603 Panasonic	®- ECG ERJ	-3EKF2201V
1 R7	Resistor, TKF, 20k, 1%, 1/10W, SMD, 0603 Panasonic	®- ECG ERJ	-3EKF2002V
1 R9	Resistor, TKF, 2R, 1%, 1/4W, SMD, 0603 Vishay/Dale	CRCW06032R00FKEAHP
1 R11	Resistor, TKF, 2.1k, 1%, 1/10W, SMD, 0603	Panasonic®- ECG ERJ	-3EKF2101V
1 R12	Resistor, TKF, 0R, 1/10W, SMD, 0603	Panasonic®- ECG ERJ	-3GSY0R00V
2	R13, R14	Resistor, TKF, 1R, 1%, 1/10W, SMD, 0603	Yageo Corporation	RC0603FR-071RL
1 R15	Resistor, TKF, 16.2k, 1%, 1/10W, SMD, 0603	Panasonic®- ECG ERJ	-3EKF1622V
1 R16	Do Not Populate – Resistor, TKF, 1R, 1%, 1/10W, SMD, 0603	Yageo Corporation RC0603FR-071RL
1 R17	Resistor, TKF, 49.9R, 1%, 1/10W, SMD, 0603	Panasonic®- ECG ERJ	-3EKF49R9V
1 R18	Resistor, TKF, 1.37k, 1%, 1/10W, SMD, 0603	Yageo Corporation RC0603FR-071K37L
1 R19	Resistor, TKF, 523R, 1%, 1/10W, SMD, 0603	Panasonic®- ECG ERJ	-3EKF5230V
1 R20	Resistor, TKF, 15R, 1%, 1/16W, SMD, 0603 Stackpole Electronics, Inc.		RMCF0603FT15R0
1 U1	MCHP Analog Switcher, Buck, 0.6V to 32V, MIC28514T-E/PHA VQFN-32	Microchip Technology Inc.		MIC28514T-E/PHA

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.

TABLE B-2: BILL OF MATERIALS (BOM) – MECHANICAL PARTS

Qty.	Reference	Description	Manufacturer	Part Number
1	JP1	Mechanical Hardware Jumper, 2.54 mm, 1x2, Handle Gold	TE Connectivity, Ltd.	881545-2
1	LABEL1	Label, Assembly w/Rev. Level (Small Modules) per MTS-0002
4	PAD1, PAD2, PAD3, PAD4	Mechanical Hardware, Rubber Pad, Cylindrical, D9.53H5.97	3M	SJ61A2

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.

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