| 发明名称 |
Low cost power supply circuit and method |
| 摘要 |
A power supply circuit has an LLC converter stage for converting a DC voltage input into a DC voltage output, and at least one hysteretic converter stage. Each hysteretic converter stage has a DC voltage input coupled to the DC voltage output of the LLC converter stage, and a DC current output. The LLC converter stage lacks a feedback control, and is operated at its load independent point. A ripple on the DC voltage output of the LLC converter does not affect the output current of the hysteretic converter stage. The stable DC current output of the hysteretic converter stage is coupled to a load having one or more LED strings. |
| 申请公布号 |
US8754587(B2) |
申请公布日期 |
2014.06.17 |
| 申请号 |
US201013381980 |
申请日期 |
2010.06.29 |
| 申请人 |
Koninklijke Philips N.V. |
发明人 |
Van Der Veen Geert Willem;Snelten Jeroen |
| 分类号 |
H05B37/02;H02J1/00;H02M3/335 |
主分类号 |
H05B37/02 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A power supply circuit for supplying a stable DC current output, the power supply circuit comprising:
an LLC converter stage for converting a DC voltage input into a DC voltage output; and at least one hysteretic converter stage having a DC voltage input coupled to the DC voltage output of the LLC converter stage, and having a DC current output, wherein the LLC converter stage lacks a feedback control.
|
| 地址 |
Eindhoven NL |
