Most battery-charger ICs have a thermal regulation loop that reduces their charge current in order to protect the IC from damage due to overheating. As such, PCB thermal management is critical to maximize the charge current (which reduces charge time) into today’s high-capacity batteries in addition to maintaining practical outside case temperatures. Using I-FET dual chargers, either in a parallel or cascade configuration as the application allows, gives better heat distribution for lower IC and case temperatures along with faster, cooler charging and longer device run times.