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Installation and Operation

©

 2006 Microchip Technology Inc.

DS51267B-page 9

2.4

DETAILED DESCRIPTION

The MCP7382X Evaluation Board is set-up to evaluate simple, stand-alone, linear 
charging of single cell Li-Ion battery packs. Each of the three Li-Ion battery chargers 
can be evaluated independently. The chargers provide controlled current charging fol-
lowed by constant voltage charging. The MCP73826, U1, is provided in a 6-pin SOT23 
package and is equipped with shutdown control. The MCP73827, U2, is provided in an 
8-pin MSOP package. In addition to shutdown control, the MCP73827 signals when the 
charge cycle transitions from controlled current mode to constant voltage mode. An 
LED, D3, is illuminated during the controlled current mode. A voltage representation of 
the charge current, I

MON

, is provided for a host microcontroller to monitor the charge 

profile. The MCP73828, U3, is also provided in an 8-pin MSOP package. In addition to 
shutdown control, the MCP73828 signals when the charge current has diminished 
below ten percent of the peak charge current. An LED, D2, is illuminated indicating full 
charge. A thermistor input is provided to inhibit charging when the cell temperature is 
outside a pre-defined window. Refer to the appropriate data sheets for details on the 
individual device features.

2.4.1

Input Source

The MCP7382X Evaluation Board is designed to provide an output current of 1A, typi-
cal. A 5V ±10%, 6W input source should be utilized to power the evaluation kit. JP1 
terminal 1 is the positive input source connection. JP1 terminal 2 is the negative input 
source connection.
Higher or lower output currents can be obtained by adjusting the value of the sense 
resistor, R1. A corresponding higher or lower power input source may need to be uti-
lized. Care should be taken not to over stress the pass transistor, Q1, with excessive 
power dissipation when higher output currents are desired.

2.4.2

Reverse Blocking Protection

The MCP7382X Evaluation Board is designed to provide reverse blocking protection in 
the event a reversed polarity input source is connected to JP1. The reverse blocking 
protection diode, D1, also ensures that a faulted or shorted input source will not 
adversely effect the battery pack.

2.4.3

Battery Headers

Two headers, JP2 and JP3 are used to connect to an external Li-Ion battery pack and 
optional protection thermistor. JP2 terminal 1 is the battery pack positive connection, 
JP2 terminal 2 is the negative battery pack connection. JP3 terminal 1 is for connection 
to a 10 k ohm NTC thermistor situated in the battery pack for temperature sensing. JP3 
terminal 2 is the negative reference for the thermistor.

Note:

Improper connection of the battery may result in damage to the 
battery and the possibility of personal injury. It is also important to 
avoid shorting the battery terminals together.

Содержание MCP7382X

Страница 1: ...2006 Microchip Technology Inc DS51267B MCP7382X Evaluation Kit User s Guide...

Страница 2: ...is a service mark of Microchip Technology Incorporated in the U S A All other trademarks mentioned herein are property of their respective companies 2006 Microchip Technology Incorporated Printed in t...

Страница 3: ...Evaluation Kit Components 5 Chapter 2 Installation and Operation 7 2 1 Description 7 2 2 Features 7 2 3 Getting Started 8 2 4 Detailed Description 9 Appendix A Schematic and Board Layouts 11 A 1 Intr...

Страница 4: ...MCP7382X Evaluation Kit User s Guide DS51267B page iv 2006 Microchip Technology Inc NOTES...

Страница 5: ...or MCP73828 devices this chapter describes how to use the various features of the hardware Appendix A Schematic and Board Layouts shows the schematic and lay out diagrams for the MCP7382X Evaluation...

Страница 6: ...ial 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 wi...

Страница 7: ...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...

Страница 8: ...MCP7382X Evaluation Kit User s Guide DS51267B page 4 2006 Microchip Technology Inc NOTES...

Страница 9: ...it is an evaluation and demonstration tool for Microchip Technology s MCP7382X Single Cell Lithium Ion Charge Management Controllers The design provides for dynamic versatility while being able to han...

Страница 10: ...MCP7382X Evaluation Kit User s Guide DS51267B page 6 2006 Microchip Technology Inc NOTES...

Страница 11: ...ion kit is fully assembled and tested The kit is useful for evaluating simple stand alone operation or for evaluating applications interfaced with a microcontroller 2 2 FEATURES The MCP7382X Evaluatio...

Страница 12: ...P5 to enable the appropriate device for evaluation 3 Connect an external bench supply or voltage regulated wall cube to JP1 Observe correct polarity of connection 4 Connect a single cell Li Ion batter...

Страница 13: ...e The MCP7382X Evaluation Board is designed to provide an output current of 1A typi cal A 5V 10 6W input source should be utilized to power the evaluation kit JP1 terminal 1 is the positive input sour...

Страница 14: ...arger monitor charge status monitor the charge profile or terminate a charge A proto typing area is provided for generation of a self contained microcontroller solu tion 2 4 6 Output Voltage Options T...

Страница 15: ...Appendix A Schematic and Board Layouts A 1 INTRODUCTION This appendix contains the schematic and board layouts for the MCP7382X Evaluation Kit A 2 HIGHLIGHTS Diagrams included in this appendix Board S...

Страница 16: ...k R5 100k R7 DNP R8 0 VDRV 4 VBAT 3 SHDN 1 VSS 2 VSNS 6 VIN 5 U1 MCP73826 VDRV 6 VBAT 5 SHDN 1 IMON 4 VSS 2 MODE 3 VSNS 7 VIN 8 U2 MCP73827 VDRV 6 VBAT 5 SHDN 1 CD10 4 VSS 2 THERM 3 VSNS 7 VIN 8 U3 MC...

Страница 17: ...Schematic and Board Layouts 2006 Microchip Technology Inc DS51267B page 13 A 4 BOARD LAYOUT TOP ASSEMBLY Note The VOUT connected on JP6 is directly connected to the VBAT pin of the DUT...

Страница 18: ...MCP7382X Evaluation Kit User s Guide DS51267B page 14 2006 Microchip Technology Inc A 5 BOARD LAYOUT TOP LAYER...

Страница 19: ...Schematic and Board Layouts 2006 Microchip Technology Inc DS51267B page 15 A 6 BOARD LAYOUT BOTTOM LAYER...

Страница 20: ...MCP7382X Evaluation Kit User s Guide DS51267B page 16 2006 Microchip Technology Inc NOTES...

Страница 21: ...1 Thick Film Chip 0805 Panasonic ERJ 6ENF2212V 4 R3 R4 R5 R6 22 1 kohm 1 10W 1 Thick Film Chip 0805 Panasonic ERJ 6ENF2212V 0 R7 Not populated 0805 1 R8 0 0 ohm Jumper 0805 Phycomp 9C08052A0R00JLH 2 R...

Страница 22: ...21 5407 5066 China Shenyang Tel 86 24 2334 2829 Fax 86 24 2334 2393 China Shenzhen Tel 86 755 8203 2660 Fax 86 755 8203 1760 China Shunde Tel 86 757 2839 5507 Fax 86 757 2839 5571 China Wuhan Tel 86 2...

Страница 23: ...ltera Analog Devices Intersil Interpoint Microsemi Aeroflex Peregrine Syfer Eurofarad Texas Instrument Miteq Cobham E2V MA COM Hittite Mini Circuits General Dynamics 8 812 309 58 32 8 812 320 02 42 or...

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