Related Manuals for Microchip Technology MIC2128
Summary of Contents for Microchip Technology MIC2128
- Page 1 MIC2128 Evaluation Board User’s Guide 2016 Microchip Technology Inc. DS50002533A...
- Page 2 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. Microchip received ISO/TS-16949:2009 certification for its worldwide Silicon Storage Technology is a registered trademark of headquarters, design and wafer fabrication facilities in Chandler and Microchip Technology Inc.
- Page 3 Object of Declaration: MIC2128 Evaluation Board 2016 Microchip Technology Inc. DS50002533A-page 3...
- Page 4 NOTES: 2016 Microchip Technology Inc. DS50002533A-page 4...
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Page 5: Table Of Contents
1.1 Introduction ....................11 1.2 MIC2128 Evaluation Board Overview ............11 1.3 MIC2128 Evaluation Board Features ............12 1.4 What the MIC2128 Evaluation Board Kit Contains ........12 Chapter 2. Installation and Operation 2.1 System and Configuration Requirements ............. 13 2.2 Board Setup .................... - Page 6 MIC2128 Evaluation Board User’s Guide NOTES: 2016 Microchip Technology Inc. DS50002533A-page 6...
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Page 7: Preface
• Document Revision History DOCUMENT LAYOUT This document describes how to use the MIC2128 Evaluation Board as a development tool to emulate and debug firmware on a target board. The manual layout is as follows: • – Important information about the MIC2128 Chapter 1. -
Page 8: Conventions Used In This Guide
MIC2128 Evaluation Board User’s Guide 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... -
Page 9: Recommended Reading
Preface RECOMMENDED READING This user’s guide describes how to use the MIC2128 Evaluation Board. Another useful document is listed below. The following Microchip document is available and recommended as a supplemental reference resource: • MIC2128YML Data Sheet – “75V, Synchronous Buck Controllers Featuring Adaptive On-Time Control”... - Page 10 MIC2128 Evaluation Board User’s Guide NOTES: 2016 Microchip Technology Inc. DS50002533A-page 10...
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Page 11: Chapter 1. Product Overview
MIC2128 EVALUATION BOARD USER’S GUIDE Chapter 1. Product Overview INTRODUCTION This chapter provides an overview of the MIC2128 Evaluation Board and covers the following topics: • MIC2128 Evaluation Board Overview • MIC2128 Evaluation Board Features • What the MIC2128 Evaluation Board Kit Contains... -
Page 12: Mic2128 Evaluation Board Features
• Output: 5V at 5A • 300 kHz Switching Frequency (adjustable 270 kHz to 800 kHz) WHAT THE MIC2128 EVALUATION BOARD KIT CONTAINS The MIC2128 Evaluation Board includes the following items: • MIC2128 Evaluation Board (ADM00770) • Important Information Sheet ... -
Page 13: Chapter 2. Installation And Operation
USER’S GUIDE Chapter 2. Installation and Operation SYSTEM AND CONFIGURATION REQUIREMENTS The MIC2128 Evaluation Board requires only a single power supply with at least 10A current capability. The MIC2128 has internal V LDO so no external linear regulator is required to power the internal biasing of the IC. In the applications with V <... -
Page 14: Circuit Description
EQUATION 1 --------- - The MIC2128 output is optimized for 5V output. All other voltages other than 5V can be set by modifying R11 value according to: EQUATION 2-2: EQUATION 2 R10 V -------------------------------- - –... - Page 15 30% margin to ICL in the above equation to avoid false current limiting due to increased MOSFET junction temperature rise. It is also recommended to connect the SW pin directly to the drain of the low-side MOSFET to accurately sense the MOSFET’s R DS(ON) 2016 Microchip Technology Inc. DS50002533A-page 15...
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Page 16: Loop Gain Measurement
20Ω to 50Ω. 2.3.5 Setting the Switching Frequency The MIC2128 Evaluation Board is an adjustable-frequency, synchronous buck controller 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 R2 and R3. -
Page 17: Setting The Soft-Start Time
The value of the capacitor can be calculated using the following equation: EQUATION 2-5: EQUATION 5 -------------------- where: Capacitor from SS pin to AGND µA Internal soft-start current (1.3 typical) Output soft-start time Reference voltage (0.6V) 2016 Microchip Technology Inc. DS50002533A-page 17... -
Page 18: Auxiliary Bootstrap Ldo (Extvdd)
Auxiliary Bootstrap LDO (EXTVDD) The MIC2128 Evaluation Board features an auxiliary bootstrap LDO which improves the system efficiency by supplying the MIC2128 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... -
Page 19: Appendix A. Schematic And Layouts
MIC2128 EVALUATION BOARD USER’S GUIDE Appendix A. Schematic and Layouts INTRODUCTION This appendix contains the following schematics and layouts for the MIC2128 Evaluation Board : • Board – Schematic • Board – Top Silk Layer • Board – Top Copper layer •... -
Page 20: Board - Schematic
7V to 75V 0.1uF 4.7uF PGND 0.1uF 2.2uF 2.2uF 2.2uF AGND 100uF 49.9 10nF 10uH VOUT OPEN 100K 5V@5A ILIM FREQ MIC2128 47uF OPEN OPEN PGND 330uF 0.1uF OPEN OPEN 1.5k OPEN 100nF 7.5K 4.7nF 0.1uF EXTVDD EXTVDD OPEN PVDD PGND 4.7uF... -
Page 21: Board - Top Silk Layer
Schematic and Layouts BOARD – TOP SILK LAYER 2016 Microchip Technology Inc. DS50002533A-page 21... -
Page 22: Board - Top Copper Layer
MIC2128 Evaluation Board User’s Guide BOARD – TOP COPPER LAYER 2016 Microchip Technology Inc. DS50002533A-page 22... -
Page 23: Board - Mid Copper Layer 1
Schematic and Layouts BOARD – MID COPPER LAYER 1 2016 Microchip Technology Inc. DS50002533A-page 23... -
Page 24: Board - Mid Copper Layer 2
MIC2128 Evaluation Board User’s Guide BOARD – MID COPPER LAYER 2 2016 Microchip Technology Inc. DS50002533A-page 24... -
Page 25: Board - Bottom Copper Layer
Schematic and Layouts BOARD – BOTTOM COPPER LAYER 2016 Microchip Technology Inc. DS50002533A-page 25... -
Page 26: Board - Bottom Silk Layer
MIC2128 Evaluation Board User’s Guide BOARD – BOTTOM SILK LAYER 2016 Microchip Technology Inc. DS50002533A-page 26... -
Page 27: Appendix B. Bill Of Materials (Bom)
RC0603FR-0749R9L 0805 size resistor DO NOT POPULATE The components listed in this Bill of Materials are representative of the PCB assembly. The released BOM used in Note 1: manufacturing uses all RoHS-compliant components. 2016 Microchip Technology Inc. DS50002533A-page 27... - Page 28 MIC2128 Evaluation Board User’s Guide TABLE B-2: BILL OF MATERIALS (BOM) - MECHANICAL PARTS Qty. Reference Description Manufacturer Part Number 100V Schottky diode, power PAK S08 (5.15 mm X 6.15 mm) DO NOT POPULATE JU1, JU3 2-pin Header (100 mil pitch) TE Connectivity, Ltd.
- Page 29 Bill of Materials (BOM) NOTES: 2016 Microchip Technology Inc. DS50002533A-page 29...
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Page 30: Worldwide Sales And Service
Tel: 631-435-6000 Fax: 86-27-5980-5118 Fax: 886-2-2508-0102 San Jose, CA Tel: 408-735-9110 China - Xian Thailand - Bangkok Tel: 86-29-8833-7252 Tel: 66-2-694-1351 Canada - Toronto Fax: 86-29-8833-7256 Fax: 66-2-694-1350 Tel: 905-695-1980 Fax: 905-695-2078 06/23/16 2016 Microchip Technology Inc. DS50002533A-page 30... - Page 31 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Microchip ADM00770...
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