Техническая Спецификация для Microchip Technology MCP1631 Evaluation Board MCP1631RD-DCPC1 MCP1631RD-DCPC1

© 2009 Microchip Technology Inc.

DS51798A-page 9

The MCP1631HV Digitally Programmable Current Source Reference Design firmware 
may be re-programmed with the charger profile for Li-Ion or NiMH/NiCd battery packs. 
Firmware profile pre-proccessor definitions are :

• #define LION_SUPPORT  DISABLED

• #define NIMH_SUPPORT DISABLED

• #define LED_DRIVER_SUPPORT ENABLED

Setting one of the profiles to ENABLED and the other two to DISABLED will select the 
ENABLED profile at compile time. The re-compiled code will then perform the functions 
required for the selected profile.

Figure 2-2 shows the charge profiles for a single-cell 1000 mAh Li-Ion battery pack. 
Figure 2-3 shows the charge profile for a three-cell 600 mAh NiMH battery pack with 
Temperature Shutdown disabled. Disabling the Temperature Shutdown is only done 
one time in the lab to profile the battery pack and chemistry. The Temperature 
Shutdown should always be enabled in production firmware to prevent the battery pack 
from overheating during a charge cycle.