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US 2010/0304511 A1Published application
Method of sensing a high voltage
AssigneeSemiconductor Components Industries, LLC
InventorsJefferson W. Hall, Mohammed Tanvir Quddus
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Abstract
In one embodiment, a high voltage element is formed overlying a doped semiconductor region that can be depleted during the operation of the high voltage element includes a conductor overlying a space in a resistor.
Claims25
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A method of sensing a high voltage comprising:
- providing a semiconductor substrate;
- forming a sense element overlying the semiconductor substrate and configuring the sense element to receive a high voltage having a value that is greater than approximately five volts and responsively form a sense signal having a value that is representative of the value of the high voltage and varies in a continuous manner over an operating range of the high voltage wherein the sense signal is one of a voltage having a value that is representative of the high voltage or a current having a value that is representative of the high voltage.
A method of sensing a high voltage for a power supply controller comprising:
- providing a semiconductor substrate;
- forming a sense element overlying the semiconductor substrate and configuring the sense element to receive a high voltage having a value that is greater than approximately five volts and responsively form a sense signal having a value that is representative of the value of the high voltage and varies in a continuous manner over an operating range of the high voltage;
- forming a first circuit on the semiconductor substrate;
- and
- configuring the first circuit to use the sense signal for one of detecting a line under-voltage condition, detecting a line over-voltage condition, determining input power, limiting input power, power limiting, controlling standby operation, a line feed-forward function for current mode ramp compensation, regulating an output voltage, or detecting an energy transfer state of an energy storage element.
2 more elements
Dependencies are inferred from the claim text.