A 1.5A 88.6% Li-ion Battery Charger Design using Pulse Swallow Technique in Light Load
| Autor: | Guan-Xian Liu, Chua-Chin Wang |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Battery (electricity)
business.industry Computer science 020208 electrical & electronic engineering Electrical engineering Battery (vacuum tube) 02 engineering and technology Inductor Pulse (physics) Battery charger Hardware_GENERAL 0202 electrical engineering electronic engineering information engineering Power semiconductor device business Pulse-width modulation Voltage |
| Zdroj: | ISCAS |
| Popis: | Traditional Li-ion battery chargers face a dilemma, which is the poor efficiency at a large charging current or vice versa. A pulse swallow technique is proposed in this investigation to resolve the mentioned problem. The proposed design carries out the automatic switching of PWM/PFM when the charging operation enters a light load scenario. When the battery voltage is close to the pre-defined full voltage, PFM strobes mask out the system clock to shut off power transistors to boost the efficiency. Post-layout simulations justify the proposed design generates 1.5 A current with 87.4%–88.6% efficiency. |
| Databáze: | OpenAIRE |
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