发明名称 |
Method of forming a detection circuit and structure therefor |
摘要 |
In one embodiment, a power supply controller is configured to use a current to detect two different operating conditions on a single input terminal. |
申请公布号 |
US8922966(B2) |
申请公布日期 |
2014.12.30 |
申请号 |
US200812991727 |
申请日期 |
2008.06.26 |
申请人 |
Semiconductor Components Industries, L.L.C. |
发明人 |
Conseil Stephanie |
分类号 |
H02H5/04;G06F1/32;H02M1/08;H02M1/32;H02M3/335 |
主分类号 |
H02H5/04 |
代理机构 |
|
代理人 |
Hightower Robert F. |
主权项 |
1. A method of forming a power supply controller comprising:
configuring the power supply controller to form a switching drive signal to operate a switch and regulate and output voltage to a desired value; configuring a detection circuit to maintain a first input of the power supply controller at substantially a first voltage value and to couple a control current to the first input wherein a first portion of the control current flows through the first input responsively to a first condition leaving a second portion of the control current and wherein another current flows to the first input from external to the power supply controller responsively to a second condition; and configuring the power supply controller to negate the switching drive signal responsively to a first value of the first portion of the control current and to negate the switching drive signal responsively to a first value of the another current. |
地址 |
Phoenix AZ US |