Diode conduction sensor
First Claim
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1. A system, comprising:
- a body diode conduction sensor configured for coupling to a switching element, the sensor comprising;
first and second voltage divider networks coupled to a voltage source;
a detection diode coupled to the switching element and to the first voltage divider network, wherein the detection diode is conductive at times corresponding to body diode conduction of the switching element decreasing a DC average voltage at an output node of the first voltage divider network; and
an output for a differential output voltage coupled to the first and second voltage divider networks having an output signal corresponding to a time of the body diode conduction of the switching element.
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Abstract
Methods and apparatus for a body diode conduction sensor configured for coupling to a switching element. In embodiments, the sensor comprises first and second voltage divider networks coupled to a voltage source and a diode coupled to the switching element and to the first voltage divider network, wherein the diode is conductive at times corresponding to body diode conduction of the switching element decreasing the DC average voltage at the output node of the first voltage divider network. A differential output voltage can be coupled to the first and second voltage divider networks with an output signal corresponding to a time of the body diode conduction of the switching element.
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Citations
20 Claims
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1. A system, comprising:
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a body diode conduction sensor configured for coupling to a switching element, the sensor comprising; first and second voltage divider networks coupled to a voltage source; a detection diode coupled to the switching element and to the first voltage divider network, wherein the detection diode is conductive at times corresponding to body diode conduction of the switching element decreasing a DC average voltage at an output node of the first voltage divider network; and an output for a differential output voltage coupled to the first and second voltage divider networks having an output signal corresponding to a time of the body diode conduction of the switching element. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method, comprising:
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providing a body diode conduction sensor configured for coupling to a switching element by; coupling first and second voltage divider networks to a voltage source; coupling a detection diode to the switching element and to the first voltage divider network, wherein the detection diode is conductive at times corresponding to body diode conduction of the switching element decreasing a DC average voltage at an output node of the first voltage divider network; and coupling an output for a differential output voltage to the first and second voltage divider networks having an output signal corresponding to a time of the body diode conduction of the switching element. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A body diode conduction sensor, comprising:
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a divider means for dividing voltage coupled to a voltage source; a detection diode coupled to a switching means and to the divider means, wherein the detection diode is conductive at times corresponding to body diode conduction of the switching means decreasing a DC average voltage at an output node of the first voltage divider network; and a differential output voltage means coupled to the divider means, the differential output voltage means having an output signal corresponding to a time of the body diode conduction of the switching element. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification