Name
Title | ||
|---|---|---|
A Fully Integrated Multimode Wireless Power Charger IC With Adaptive Supply Control and Built-In Resistance Compensation |
Abstract | ||
|---|---|---|
We present a fully integrated multimode lithium-ion battery charger integrated circuit (IC) for wireless power charging applications. The proposed charger IC integrates an analog block for battery charging, a digital control block, an analog-to-digital converter, and memory on a single chip. To improve the charging efficiency, the supply voltage of the charger IC is controlled by an adaptive low-dropout (LDO) regulator. A series-voltage feedback path is formed along the LDO regulator and multimode level shifter, which regulates the supply voltage to closely follow the battery voltage. For a smooth transition during multimode charging, we propose a new approach for built-in resistance compensation. The digital control block of the charger IC is designed in accordance with the Qi standard. The battery charger IC is fabricated in a one-poly six-metal 0.18-μm CMOS process. Integrated with the digital control block and memory, the core area of the multimode charger IC is 0.9 × 1.4 mm2. The input voltage ranges from 4.8 to 5 V. The output voltage is 4.2 V in constant-voltage mode. The charging current in constant-current mode is 450 mA. The maximum and average charging efficiencies are 83% and 79%, respectively. |
Year | DOI | Venue |
|---|---|---|
2015 | 10.1109/TIE.2014.2336618 | IEEE Transactions on Industrial Electronics |
Keywords | Field | DocType |
adaptive ldo regulator,cmos process,wireless power charging,charger ic voltage supply,radiofrequency power transmission,single chip memory,constant-voltage mode,analogue-digital conversion,digital control block,smooth transition,adaptive supply control,qi standard,fully integrated multimode wireless power charger integrated circuit,multimode level shifter,power supply circuits,built-in resistance compensation,voltage supply regulation,fully integrated multimode lithium-ion battery charger ic,adaptive supply voltage,adaptive control,series-voltage feedback,electric resistance,analog-to-digital converter,adaptive low-dropout regulator,secondary cells,cmos memory circuits,voltage control,built-in resistance compensation (brc),digital control,battery chargers,constant-current mode,charging current,lithium-ion battery,wireless communication,integrated circuits | Voltage,Battery charger,Electronic engineering,Chip,Control engineering,Logic level,Engineering,Battery (electricity),Electrical engineering,Integrated circuit,Digital control,Low-dropout regulator | Journal |
Volume | Issue | ISSN |
62 | 2 | 0278-0046 |
Citations | PageRank | References |
1 | 0.36 | 9 |
Authors | ||
3 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Phu Ho Van Quang | 1 | 1 | 0.36 |
| Thanh Tien Ha | 2 | 1 | 0.36 |
| Jong-Wook Lee | 3 | 66 | 11.45 |