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US 2026/0081808 A1Published application
Methods and apparatus for edge-triggered digital isolator circuitry
AssigneeTexas Instruments Incorporated
InventorsKumar Anurag Shrivastava, Sreeram S, Tarunvir Singh
Life of this patent
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Abstract
An example apparatus includes: transmitter channel circuitry including: a buffer having an output; and a capacitor having a first terminal and a second terminal, the first terminal of the capacitor coupled to the output of the buffer; an isolation transformer including: a first inductor having a terminal coupled to the second terminal of the capacitor; and a second inductor magnetically coupled to the first inductor across an isolation barrier; and receiver channel circuitry coupled to the second inductor.
Claims17
A system comprising:
- transmitter channel circuitry including:
- a first buffer having an output;
- a first capacitor having a first terminal and a second terminal, the first terminal of the capacitor coupled to the output of the buffer;
- a second buffer having an output;
- a second capacitor having a first terminal and a second terminal, the first terminal of the second capacitor coupled to the output of the second buffer
- an isolator including:
- a first inductor having a first terminal coupled to the second terminal of the first capacitor, wherein the second terminal of the second capacitor is coupled to a second terminal of the first inductor;
- and
- a second inductor magnetically coupled to the first inductor across an isolation barrier;
- and
- receiver channel circuitry coupled to the second inductor.
8 more elements
A system comprising:
- first transmitter channel circuitry including:
- a first buffer having an output;
- a first capacitor having a first terminal and a second terminal, the first terminal of the capacitor coupled to the output of the buffer;
- an isolator including:
- a first inductor having a first terminal coupled to the second terminal of the first capacitor;
- and
- a second inductor magnetically coupled to the first inductor across an isolation barrier;
- first receiver channel circuitry coupled to the second inductor;
- and
- second transmitter channel circuitry and second receiver channel circuitry, the second transmitter channel circuitry coupled to the second receiver channel circuitry by the isolation transformer.
7 more elements
A system comprising:
- transmitter channel circuitry including:
- a first buffer having an output;
- a first capacitor having a first terminal and a second terminal, the first terminal of the capacitor coupled to the output of the buffer;
- an isolator including:
- a first inductor having a first terminal coupled to the second terminal of the first capacitor;
- and
- a second inductor magnetically coupled to the first inductor across an isolation barrier;
- receiver channel circuitry coupled to the second inductor;
- and
- reconstruction circuitry coupled to the receiver channel circuitry, the reconstruction circuitry configured, responsive to a pulse train from the receiver channel circuitry, to reconstruct a serial data stream.
7 more elements
Dependencies are inferred from the claim text.