MCP1630RD-NMC1产品概述
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 1.35 A fast charge.
Features:
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
Datasheet
