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US 10,211,764 B2Granted
Short-circuit detection circuit in a full-bridge circuit
AssigneePrinceton Technology Corporation
InventorWen-Jan Lee
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AssigneePrinceton Technology Corporation
InventorWen-Jan Lee
Estimating the term…
A short-circuit detection circuit is adapted to a full-bridge driver which includes the first and second high-side transistors respectively coupled from a supply voltage to the first and second output nodes and the first and second low-side transistors respectively coupled from the first and second output nodes to a ground. The short-circuit detection circuit includes the first and second voltage dividers respectively receiving voltages of the first and second output nodes to respectively generate the first and second voltages, the high-side and low-side selectors respectively selecting the first voltage and the second voltage to respectively generate a high-side voltage and a low-side voltage, a high-side comparator generating a high-side short-circuit signal when the high-side voltage is lower than a high-side reference voltage, and a low-side comparator generating a low-side short-circuit signal when the low-side voltage exceeds the low-side reference voltage.
A short-circuit detection circuit adapted in a full-bridge driving circuit, wherein the full-bridge driving circuit comprises a first high-side transistor coupled between a supply voltage and a first output node, a second high-side transistor coupled between the supply voltage and a second output node, a first low-side transistor coupled between the first output node and a ground, a second low-side transistor coupled between the second output node and the ground, and a motor coil coupled between the first output node and the second output node, comprising:
A full-bridge circuit, comprising:
Dependencies are inferred from the claim text.