Abstract
In this paper, the proposed topology of a fully automated control (FAC) battery charger that provides turbo-boost operation and fully automated detection without any feedback from the system is discussed. It uses closed-loop control for automatic system load detection and automatically adjusts the battery discharge current. The advantages include shortened battery discharge time and maximum power provided by the adapter. Therefore, the FAC technique is flexible for any load system that is limited to battery chargers with the turbo boost mode support. In addition, to avoid over discharge, a battery protection circuitry is also included. The test chip is fabricated using a 0.25-\mu \text{m} CMOS process, with a maximum efficiency of 94.58% when the charger operates in the turbo boost mode, and achieves 97% maximum efficiency when the charger operates in buck charge mode.
| Original language | English |
|---|---|
| Article number | 8760562 |
| Pages (from-to) | 4516-4527 |
| Number of pages | 12 |
| Journal | IEEE Transactions on Circuits and Systems I: Regular Papers |
| Volume | 66 |
| Issue number | 11 |
| DOIs | |
| State | Published - Nov 2019 |
Keywords
- Closed loop control
- constant current mode
- constant voltage mode
- efficiency
- fully automated control topology
- fully automatic detection
- self-calibrated discharging current