Microchip Technology MCP1630 Reference Manual
Low-cost nimh battery charger
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Summary of Contents for Microchip Technology MCP1630
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Page 1: Battery Charger
MCP1630 Low-Cost NiMH Battery Charger Reference Design © 2007 Microchip Technology Inc. DS51648A... - Page 2 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.
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Page 3: Table Of Contents
Document Revision History ................... 4 Chapter 1. Product Overview ..................5 1.1 Introduction ..................... 5 1.2 What is the MCP1630 Low Cost NiMH Battery Charger Reference Design? 6 1.3 What the MCP1630 Low Cost NiMH Battery Charger Reference Design Kit includes ....................6 Chapter 2. - Page 4 MCP1630 Low-Cost NiMH Battery Charger Reference Design NOTES: © 2007 Microchip Technology Inc. DS51648A-page iv...
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Page 5: Preface
Low-Cost NiMH Battery Charger Reference Design. • Chapter 2. “Installation and Opation” – Includes instructions on how to get started with this user’s guide and a description of how to use the MCP1630 Low-Cost NiMH Battery Charger Reference Design. • Appendix A. “Schematic and Layouts” – Shows the schematic and layout diagrams for the MCP1630 Low-Cost NiMH Battery Charger Reference Design. -
Page 6: Conventions Used In This Guide
MCP1630 Low-Cost NiMH Battery Charger Reference Design 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... -
Page 7: Recommended Reading
Preface RECOMMENDED READING This user's guide describes how to use MCP1630 Low-Cost NiMH Battery Charger Reference Design. Other useful documents are listed below. The following Microchip documents are available and recommended as supplemental reference resources. MCP1630/MCP1630V Data Sheet, "High-Speed, Microcontroller-Adaptable, Pulse Width Modulator"... -
Page 8: Document Revision History
MCP1630 Low-Cost NiMH Battery Charger Reference Design DOCUMENT REVISION HISTORY Revision A (February 2007) • Initial Release of this Document. © 2007 Microchip Technology Inc. DS51648A-page 4... -
Page 9: Chapter 1. Product Overview
Microchip’s MCP1630 in a SEPIC power converter application. As provided, the MCP1630 Low-Cost NiMH Battery Charger Reference Design is capable of charging a three series cell NiMH battery pack from an input voltage of 6V to 14V. The MCP1630 Low-Cost NiMH Battery Charger Reference Design provides a constant current charge with preconditioning, cell temperature monitoring and battery pack fault monitoring. -
Page 10: What Is The Mcp1630 Low Cost Nimh Battery Charger Reference Design
NiMH or NiCd battery pack. Different battery chemistries (i.e. Li-Ion batteries connected in series) can be charged with minor modifications to the firmware or with the MCP1630 Low-Cost NiMH Battery Charger Reference Design. This board utilizes Microchip’s MCP1630 ®... -
Page 11: Chapter 2. Installation And Operation
Microchip’s high-speed Pulse Width Modulator (PWM) (the MCP1630) used in a battery charger application. When used in conjunction with a microcontroller, the MCP1630 will control the power system duty cycle to provide output voltage or current regulation. The PIC12F683 microcontroller can be used to regulate output voltage or current, switching frequency and maximum duty cycle. -
Page 12: Getting Started
MCP1630 Low-Cost NiMH Battery Charger Reference Design GETTING STARTED The MCP1630 Low-Cost NiMH Battery Charger is fully assembled and tested for charging three series cell NiMH batteries. The charge termination is based on a negative slope in battery voltage or a positive slope in battery pack temperature, (when external thermistor is installed). - Page 13 APPLYING A LOAD TO THE MCP1630 LOW-COST NIMH BATTERY CHARGER REFERENCE DESIGN 1. To apply a load to the MCP1630 Low-Cost Li-Ion Battery Charger, the positive side of the load (B+) should be connected to pin 1 of J2. The negative side of the load (B-) should be connected to pin 5 of J2.
- Page 14 Simulated Battery Load. 2.3.1.3 STATUS LED 1. The MCP1630 Low-Cost NiMH Battery Charger has an LED to indicate charge status or fault status. Table 2-1 represents the state of the LED during various states of the charge cycle. TABLE 2-1:...
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Page 15: Appendix A. Schematic And Layouts
MCP1630 LOW-COST NIMH BATTERY CHARGER REFERENCE DESIGN Appendix A. Schematic and Layouts INTRODUCTION This appendix contains the following schematics and layouts for the MCP1630 Low-Cost NiMH Battery Charger Reference Design: • Board Schematic • Board – Top Silk Layer • Board – Top Metal Layer •... -
Page 16: Board - Schematic
MCP1630 Low-Cost NiMH Battery Charger Reference Design BOARD – SCHEMATIC © 2007 Microchip Technology Inc. DS51648A-page 12... -
Page 17: Board - Top Silk Layer
Schematic and Layouts BOARD – TOP SILK LAYER R18R19 C13 C14 © 2007 Microchip Technology Inc. DS51648A-page 13... -
Page 18: Board - Top Metal Layer
MCP1630 Low-Cost NiMH Battery Charger Reference Design BOARD – TOP METAL LAYER © 2007 Microchip Technology Inc. DS51648A-page 14... -
Page 19: Board - Bottom Metal Layer
Schematic and Layouts BOARD – BOTTOM METAL LAYER © 2007 Microchip Technology Inc. DS51648A-page 15... - Page 20 MCP1630 Low-Cost NiMH Battery Charger Reference Design NOTES: © 2007 Microchip Technology Inc. DS51648A-page 16...
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Page 21: Appendix B. Bill Of Materials (Bom)
MCP1630 LOW-COST NIMH BATTERY CHARGER REFERENCE DESIGN Appendix B. Bill Of Materials (BOM) TABLE B-1: BILL OF MATERIALS (BOM) Reference Description Manufacturer Part Number ® C1, C2, C4 10uF, X5R Ceramic, 25V, 1206 Panasonic -ECG ECJ-3YB1E106M 1uF, X7R Ceramic, 25V, 1206... - Page 22 MCP1630 Low-Cost NiMH Battery Charger Reference Design NOTES: © 2007 Microchip Technology Inc. DS51648A-page 18...
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Page 23: Appendix C. Demo Board Firmware
MCP1630 LOW-COST NIMH BATTERY CHARGER REFERENCE DESIGN Appendix C. Demo Board Firmware DEVICE FIRMWARE FLOWCHART - PAGE 1 For the latest copy of the MCP1630 Low-Cost NiMH Battery Charger Reference Design firmware, visit our website at www.microchip.com. START Initialize Ports, ADC, PWM, etc. -
Page 24: Device Firmware Flowchart
Demo Board Firmware DEVICE FIRMWARE FLOWCHART - PAGE 2 For the latest copy of the MCP1630 Low-Cost NiMH Battery Charger Reference Design firmware, visit our website at www.microchip.com. Top Off Charge = 130 mA CHARGE Is BATT present? Temp. Fault Timer Temp. - Page 25 Demo Board Firmware NOTES: © 2007 Microchip Technology Inc. DS51648A-page 21...
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Page 26: Worldwide Sales And Service
China - Wuhan Thailand - Bangkok Tel: 408-961-6444 Tel: 86-27-5980-5300 Tel: 66-2-694-1351 Fax: 408-961-6445 Fax: 86-27-5980-5118 Fax: 66-2-694-1350 Toronto China - Xian Mississauga, Ontario, Tel: 86-29-8833-7250 Canada Fax: 86-29-8833-7256 Tel: 905-673-0699 Fax: 905-673-6509 12/08/06 © 2007 Microchip Technology Inc. DS51648A-page 22...
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