发明名称 |
THERMAL PROTECTION CIRCUIT AND ELECTRONIC DEVICE USING THE SAME |
摘要 |
A thermal protection circuit to protect an electronic device from over-heat comprises a temperature sensor, a hysteresis comparator and a switch circuit. The temperature sensor senses internal temperature of the electronic device and output an internal temperature signal with voltage. The hysteresis comparator outputs a power-off signal when the voltage of the internal temperature signal is lower than a low voltage threshold representing an a determined temperature, or outputs a power-on signal when the voltage of the internal temperature signal is higher than a high voltage threshold representing a restarting temperature. The switch circuit stops transmitting power signals to the electronic device in response to the power-off signal, or continues to transmit the power signals to the electronic device in response to the power-on signal.
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申请公布号 |
US2011194223(A1) |
申请公布日期 |
2011.08.11 |
申请号 |
US20100770735 |
申请日期 |
2010.04.30 |
申请人 |
AMBIT MICROSYSTEMS (SHANGHAI) LTD.;HON HAI PRECISION INDUSTRY CO., LTD. |
发明人 |
KANG HONG-HAO;WANG ZHI-WEI;LIN CHI-HUNG |
分类号 |
H02H5/04 |
主分类号 |
H02H5/04 |
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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