发明名称 |
Current providing circuit and voltage providing circuit |
摘要 |
A current providing circuit, for providing an output current at an output terminal, comprising: a current providing module, coupled to a first predetermined voltage level, for providing the output current according to the first predetermined voltage level and a control voltage transmitted to the current providing module; and a control voltage generating module, for generating the control voltage corresponding to the first predetermined voltage level and a threshold voltage of the current providing module. |
申请公布号 |
US8760219(B2) |
申请公布日期 |
2014.06.24 |
申请号 |
US201213543887 |
申请日期 |
2012.07.09 |
申请人 |
Nanya Technology Corp. |
发明人 |
Chao Kuang-Wei |
分类号 |
G05F1/10 |
主分类号 |
G05F1/10 |
代理机构 |
|
代理人 |
Hsu Winston;Margo Scott |
主权项 |
1. A current providing circuit, for providing an output current at an output terminal, comprising:
a current providing module, coupled to a first predetermined voltage level, for providing the output current according to the first predetermined voltage level and a control voltage transmitted to the current providing module; and a control voltage generating module, for generating the control voltage corresponding to the first predetermined voltage level and a threshold voltage of the current providing module, comprising at least one part of the current providing module to generate a control current based on the first predetermined voltage level and the threshold voltage of the current providing module; wherein the control voltage generating module further generates the control voltage according to the control current; wherein the control voltage generating module includes at least a capacitor, for generating a charging voltage according to the control current and a second predetermined voltage; wherein the control voltage generating module comprises a voltage detector for receiving the charging voltage directly from the capacitor and comparing the charging voltage and a reference voltage, where the control voltage generating module generates the control voltage according to a voltage detecting result of the voltage detector; wherein the control voltage generating module includes a control logic circuit comprising the voltage detector, for generating the control voltage according to the charging voltage; wherein the current providing module generates the output current only when the charging voltage is less than the reference voltage; wherein the control logic circuit further comprises: a NAND gate, for receiving the voltage detecting result and an enable signal to generate the control voltage according to the voltage detecting result and the enable signal.
|
地址 |
Kueishan, Tao-Yuan Hsien TW |