发明名称 |
Buck-mode boost converter with regulated output current |
摘要 |
An LED driver circuit that includes a buck-mode boost converter that provides a regulated output current and that requires only a single connection to each channel of LEDs. The buck-mode boost controller may include a current regulator that includes an integrator. The current regulator may be configured to integrate a difference between a reference signal that is representative of the desired level of the average current through the electronic power switch and a detected signal that is representative of the actual current that is being delivered to the buck-mode boost circuit through the electronic power switch. The reference signal to the integrator may not change during operation of the buck-mode converter. The current regulator may be configured to deactivate the integrator and/or to disconnect the detected signal from the integrator while the electronic power switch is off. |
申请公布号 |
US8058812(B2) |
申请公布日期 |
2011.11.15 |
申请号 |
US20090421126 |
申请日期 |
2009.04.09 |
申请人 |
NEGRETE MICHAEL GEORGE;LINEAR TECHNOLOGY CORPORATION |
发明人 |
NEGRETE MICHAEL GEORGE |
分类号 |
H05B37/02 |
主分类号 |
H05B37/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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