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| Content Provider | IET Digital Library |
|---|---|
| Author | Liao, Tse Ju Hung, Chia Chieh Chen, Chern Lin |
| Abstract | Source switching circuit with low-gate-driving loss in high-voltage buck light emitting diode (LED) driver is proposed in this study. Source switching circuit comprises of a high-voltage power metal-oxide semiconductor field-effect transistor (MOSFET) (HVMOS) and a low-voltage power MOSFET (LVMOS) in series, a capacitor and a Zener diode. By switching the HVMOS by different source voltage and constant gate voltage, it recycles gate charges of HVMOS to reduce gate-driving loss. Gate charges are recycled in the capacitor when LVMOS is turning off, and can be reused when LVMOS is turning on. This circuit also provides a new power feeding route for control chip, and power consumption is relatively low on the proposed route. The power feeding route also improves power efficiency. With a 12 W LED load, the experiment shows that the efficiency of the proposed driving circuit is improved by 3.7% with 156 V input voltage and 4.8% with 326 V input voltage compared with the converter using single HVMOS. |
| Starting Page | 663 |
| Ending Page | 671 |
| Page Count | 9 |
| ISSN | 17554535 |
| Volume Number | 6 |
| e-ISSN | 17554543 |
| Issue Number | Issue 4, Apr (2013) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-pel/6/4 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2012.0495 |
| Journal | IET Power Electronics |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Capacitor Control Chip Driver Circuit Driving Circuit Gate Charges Gate Voltage High-voltage Buck Light Emitting Diode Driver High-voltage Power MOSFET HVMOS Insulated Gate Field Effect Transistors Junction And Barrier Diode LED Light Emitting Diode Low-gate-driving Loss Low-voltage Power MOSFET LVMOS Metal-oxide Semiconductor Field-effect Transistor Power 12 W Power Consumption Power Electronics Power Feeding Route Power MOSFET Power Semiconductor Device Power Supply Source Switching Circuit Source Voltage Supervisory Circuit Switching Centres And Equipment Voltage 156 V Voltage 326 V Zener Diode |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering |
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