发明名称 |
Thermal limited backlight driver |
摘要 |
A system for powering and controlling an LED backlight, the system comprising: a control circuitry; a plurality of LED strings; a pulse width modulation functionality associated with the control circuitry and arranged to pulse width modulate a current flow through each of the plurality of LED strings; and a plurality of current limiters responsive to the control circuitry, each of the plurality of current limiters being associated with a particular one of the plurality of LED strings and operative to limit current flow of the pulse width modulated current there-through, the control circuitry being operative in the event of a thermal condition of one of the plurality of current limiters to reduce a duty cycle of the pulse width modulation functionality of the current flow through the one of the plurality of current limiters.
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申请公布号 |
US7791584(B2) |
申请公布日期 |
2010.09.07 |
申请号 |
US20070676312 |
申请日期 |
2007.02.19 |
申请人 |
MICROSEMI CORP.-ANALOG MIXED SIGNAL GROUP LTD. |
发明人 |
KORCHARZ DROR;PEKER ARKADIY |
分类号 |
G09G3/36;H03K3/017;H03K7/08 |
主分类号 |
G09G3/36 |
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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