Cascade Dual Charger Reference Design for 1S Li-Ion Battery Powered End Equipment
Description
Smartphones and other handheld equipment with 3AHr+ 1S Li-Ion batteries require 3-A+ charger current for fast charging. Parallel chargers allow for high charge currents: resulting in shorter charge times: while distributing the heat losses across the end equipment PCB: thereby preventing hotspots. In cascade configuration: with PMID pin of master charger connected to VBUS of slave charger: input current limit management is handled through the master charger: thereby simplifying software development.
Features
- Master charger: provide system power: charging current: supplement mode: temperature profile and 2.4A USB on-the-go boost current in 4mm x 4mm QFN packageSlave charger: only provide extra fast charge current: up to 3A in 2.8mm x 2.5mm WCSP packageInnovative input source detection and current optimizer (ICO) with input dynamic power management (DPM)Integrated 7-bit ADC for battery and adaptor monitoring
Applications
- Spectrometer
- Automotive test
- Off-highway vehicles HMI & display
Product Categories
- Power management