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400-mcp1630rd-nmc1
400-mcp1630rd-nmc1

Part Number: MCP1630RD-NMC1

MCP1630 LOW-COST NIMH BATTERY CHARGER REFERENCE DESIGN

  • Programmed parameters - modified in firmware
  • Factory Settings:

            - Preconditioning Charge Current =170 mA

            - Preconditioning Threshold = 3 V

            - Constant Current Fast Charge = 1.35 A

            - Charge Termination based on delta - VBATT / delta time

            - Charge Termination based on delta + TBATT / delta time, with external thermistor installed

  • Top Off Charge Current = 130 mA for 1 Hour
  • Overvoltage protection (battery removed)
  • Overcharge protection to prevent damaging the battery
  • Overcurrent protection in the event of a shorted battery
  • Battery reversal protection
  • Input short circuit protection
  • Overtemperature protection to prevent the battery from reaching too high a temperature during charge
  • Soft-start capability by holding the reference voltage low during power-up
  • The MCP1630 Low-Cost NiMH Battery Charger has the flexibility to optimize the charging algorithm for new battery technology, different battery chemistries or different battery pack configurations
  • Proprietary features can be added by modifying the firmware contained in the PIC12F683
  • The factory-programmed source code is available
  • Ability to adapt to environmental effects, such as ambient temperature

 

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Overview

Low Cost NiMH Battery Charger board preprogrammed to charge 3 NiMH cells. Charge profile and number of batteries can be changed with firmware. The design uses the MCP1630 High-Speed Analog PWM combined with the PIC microcontroller. Charge current is initially set for 1.35A fast charge.

Package Contents
Low Cost NiMH Battery Charger board preprogrammed to charge 3 NiMH cells. Charge profile and number of batteries can be changed with firmware. The design uses the MCP1630 High-Speed Analog PWM combined with the PIC microcontroller. Charge current is initially set for 1.35A fast charge.

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All Application Notes

Documentation

Title
Document Id
MCP1630/MCP1630V Data Sheet Download 38c9d599-3aa6-4e2c-8bfc-254a67154df0
MCP1630 Low-Cost NiMH Battery Charger Reference Design Gerbers Download 68f81e81-e9e1-42b8-9bf2-2e9967107701
MCP1630 Low-Cost NiMH Battery Charger Reference Design User's Guide Download 100b10fd-2411-41c5-9615-d75b76c179bb
MCP1702 2uA Low Dropout Positive Voltage Regulator Download 98c0a09c-2d18-4d2d-9269-00f24240b5fa

Application Notes

Title
Date
Document Category
New Components and Design Methods Bring Intelligence to Battery Charger Applications 19 Nov 2004 Link Application Notes

Software

Title
Date
MCP1630 Low-Cost NiMH Battery Charger Reference Design Firmware Download 19 Feb 2007